Western Enforcer Mechanic's Guide

December 15, 2021

Lit. No. 30116, Rev. 01

MECHANIC'S GUIDE

V-Plow

Featuring the

FloStat® Hydraulic System

CAUTION

Read this manual before servicing the snowplow.

SNOWPLOWS

Lit. No. 30116, Rev. 01 December 15, 2021

TABLE OF CONTENTS

INTRODUCTION ..............................................................................................4

Recommended Tools ...................................................................................4

Available Service Items ...............................................................................4

SAFETY ............................................................................................................5

Torque Chart ................................................................................................7

BLADE, T-FRAME & HEADGEAR.................................................................8

T-Frame to Blade Assembly ........................................................................8

Center Deﬂ ector, Blade Guides, and Stand .................................................9

Using the Blade Spring Replacement Tool ................................................10

HYDRAULIC SYSTEM ..................................................................................11

FloStat® Hydraulic System Speciﬁ cations .................................................11

Hydraulic Unit Components .......................................................................12

Valve Location ...........................................................................................13

Cartridge Valves ........................................................................................14

Check Valves .............................................................................................15

Relief Valves ..............................................................................................15

Hydraulic Fitting and Hose Installation ......................................................16

Ram Seal Installation .................................................................................17

Cartridge and Check Valve Removal .........................................................18

Blade Drop Speed Adjustment ..................................................................18

VEHICLE-SIDE ELECTRICAL COMPONENTS .........................................19

Harness Diagram .......................................................................................19

Harness Diagram – LED Headlamps ........................................................ 20

CONTROLS – FLEET FLEX ELECTRICAL SYSTEM ................................21

Overview ....................................................................................................21

Operating the CabCommand Hand-Held Control ..................................... 22

Operating the Joystick Control ...................................................................24

FLEET FLEX ELECTRICAL SYSTEM ........................................................ 26

Smooth Stop and One-Touch FLOAT Features ....................................... 26

SECURITY GUARD™ Snowplow Anti-Theft System ................................27

ELECTRICAL & HYDRAULIC SCHEMATICS ........................................... 30

Legend – Electrical & Hydraulic Symbols ................................................. 30

Electrical Schematic – V-Plow ...................................................................31

Hydraulic Schematic – V-Plow ...................................................................32

RAISE ...................................................................................................... 33

LOWER/FLOAT ....................................................................................... 35

Angle Right ...............................................................................................37

Angle Left ................................................................................................. 39

RETRACT (Vee) .......................................................................................41

SCOOP .................................................................................................... 43

Right (PS) Wing Extend ............................................................................ 45

Right (PS) Wing Retract .............................................................................47

Left (DS) Wing Extend .............................................................................. 49

Left (DS) Wing Retract ...............................................................................51

Hold in RAISE Position ........................................................................... 53

Striking an Object While Plowing Forward ............................................... 54

Striking an Object While Back Dragging ................................................... 55

Headlamps ................................................................................................ 56

Electrical/Harnesses.............................................................................. 56

Electrical Schematics – 3-Port Module ..................................................57

Typical LED Schematic .......................................................................... 58

Typical Dual-Wire Halogen/LED Schematic .......................................... 60

Dual-Wire Halogen/LED Installation .......................................................62

TROUBLESHOOTING .................................................................................. 63

How to Use the Troubleshooting Guide .................................................... 64

Electrical Testing ....................................................................................... 64

Fuse Replacement .................................................................................... 64

Before You Begin ...................................................................................... 65

Solenoid Coil Activation Test (SCAT) ........................................................ 66

Individual Solenoid Coil Test ..................................................................... 69

Control/Cable/Plow Module Test ...............................................................70

Motor and Motor Relay Test .......................................................................71

Pump Pressure Test ..................................................................................72

Relief Valve Inspection and Adjustment ....................................................73

Replacing Damaged Bearing Sleeves .......................................................74

Lit. No. 30116, Rev. 01 December 15, 2021

4

This guide has been prepared to assist

the trained mechanic in the service of

WESTERN® ENFORCER™ V-plows. It also

provides safety information and recommendations.

We urge all mechanics to read the safety

statements and instructions in this guide carefully

before attempting to service the snowplow

equipment covered by this guide.

Service of your WESTERN snowplow equipment

is best performed by your local Western Products

dealer. They know your snowplow best and are

interested in your complete satisfaction.

INTRODUCTION

RECOMMENDED TOOLS

• Long/slender needle-nose pliers

• Flat screwdriver

• 12V test light

• Torque wrench

• Hex key set, including 3/8"

• Combination standard wrench set

• 1/4" drive ratchet set with 6" extension

• 3/8" drive ratchet set

• Deep socket: 7/8"

• Digital multimeter with amp clamp

• Ammeter

• Pressure test kit

• Flashlight

• Pick set

• Hammer

• Pencil magnet

• Fuses: 5A mini fuse

• Vacuum pump with 3/8" NPT barbed ﬁ tting

• 3/8" NPT plug

AVAILABLE SERVICE ITEMS

• Motor Bearing Sleeve Repair Kit, PN 64589

(requires 3/8"-24 x 4" cap screw, not included)

• Pressure Test Kit, PN 56679

(requires adapter ﬁ tting, not included)

• Spring Replacement Tool, PN 20043-1

• Diagnostic Harness Kit, PN 29290-2

• Pump Shaft Seal Repair Kit, PN 28856

(requires 1/4"-28 x 4-1/2" cap screw, not included)

Lit. No. 30116, Rev. 01 December 15, 2021

5

NOTE: Indicates a situation or action that can

lead to damage to your snowplow and vehicle

or other property. Other useful information can

also be described.

SAFETY

WARNING/CAUTION AND

INSTRUCTION LABELS

Become familiar with and inform users about the

warning and instruction labels on the back of the

blade.

NOTE: If labels are missing or cannot be read,

see your local WESTERN® dealer.

CAUTION

Indicates a potentially hazardous situation

that, if not avoided, may result in minor

or moderate injury. It may also be used to

alert against unsafe practices.

WARNING

Indicates a potentially hazardous situation

that, if not avoided, could result in death or

serious personal injury.

SAFETY DEFINITIONS

Warning/Caution Label

Instruction Label

Lit. No. 30116, Rev. 01 December 15, 2021

6

SAFETY

SAFETY PRECAUTIONS

Improper installation and operation could cause

personal injury, and/or equipment and property

damage. Read and understand labels and the

Owner's Manual before installing, operating, or

making adjustments.

HYDRAULIC SAFETY

• Always inspect hydraulic components and

hoses before using. Replace any damaged or

worn parts immediately.

• If you suspect a hose leak, DO NOT use your

hand to locate it. Use a piece of cardboard or

wood.

WARNING

Lower the blade when vehicle is parked.

Temperature changes could change

hydraulic pressure, causing the blade to

drop unexpectedly or damaging hydraulic

components. Failure to do this could result

in serious personal injury.

WARNING

Remove blade assembly before placing

vehicle on hoist.

WARNING

The driver shall keep bystanders clear of

the blade when it is being raised, lowered,

or angled. Do not stand between vehicle

and blade or within 8 feet of a moving blade.

A moving or falling blade could cause

personal injury.

WARNING

Do not exceed GVWR or GAWR including

blade and ballast. The rating label is found

on driver-side vehicle door cornerpost.

WARNING

To prevent accidental movement of

the blade, always turn the control OFF

whenever the snowplow is not in use. The

power indicator light will turn OFF.

WARNING

Keep hands and feet clear of the blade and

T-frame when mounting or removing the

snowplow. Moving or falling assemblies

could cause personal injury.

CAUTION

Refer to the current online selection system

for minimum vehicle recommendations

and ballast requirements.

WARNING

Hydraulic ﬂ uid under pressure can cause

skin injection injury. If you are injured

by hydraulic ﬂ uid, get medical attention

immediately.

FUSES

The electrical and hydraulic systems contain

several automotive-style fuses. If a problem should

occur and fuse replacement is necessary, the

replacement fuse must be of the same type and

amperage rating as the original. Installing a fuse

with a higher rating can damage the system and

could start a ﬁ re. See the Troubleshooting section

of this guide for fuse replacement information.

PERSONAL SAFETY

• Remove the ignition key and put the vehicle in

PARK or in gear to prevent others from starting

the vehicle during installation or service.

• Wear only snug-ﬁ tting clothing while working

on your vehicle or snowplow.

• Do not wear jewelry or a necktie, and secure

long hair.

• Wear safety goggles to protect your eyes from

battery acid, gasoline, dirt, and dust.

• Avoid touching hot surfaces such as the

engine, radiator, hoses, and exhaust pipes.

• Always have a ﬁ re extinguisher rated BC

handy, for ﬂ ammable liquids and electrical

ﬁ res.

Lit. No. 30116, Rev. 01 December 15, 2021

7

TORQUE CHARTBATTERY SAFETY

NOISE

Airborne noise emission during use is below

70 dB(A) for the snowplow operator.

VIBRATION

Operating snowplow vibration does not exceed

2.5 m/s2 to the hand-arm or 0.5 m/s2 to the whole

body.

FIRE AND EXPLOSION

Be careful when using gasoline. Do not use

gasoline to clean parts. Store only in approved

containers away from sources of heat or ﬂ ame.

CELL PHONES

A driver's ﬁ rst responsibility is the safe operation

of the vehicle. The most important thing you can

do to prevent a crash is to avoid distractions and

pay attention to the road. Wait until it is safe to

operate mobile communication equipment such as

cell phones, text messaging devices, pagers, or

two-way radios.

VENTILATION

SAFETY

1/4-20 109 154

1/4-28 121 171

5/16-18 150 212

5/16-24 170 240

3/8-16 269 376

3/8-24 297 420

7/16-14 429 606

7/16-20

9/16-12

9/16-18

5/8-11

5/8-18

3/4-10

3/4-16

7/8-9

7/8-14 474 669

644 9091-8

1-12 704 995

1/2-13

1/2-20

11.9

13.7

24.6

27.3

43.6

26.9

53.3

93

148

49.4

69.8

77.9

106.4

120.0

8.4

9.7

17.4

19.2

30.8

35.0

49.4

55.2

75.3

85.0

M6 x 1.00

M12 x 1.75

M8 x 1.25

M14 x 2.00

M10 x 1.50

M27 x 3.00

M22 x 2.50

M30 x 3.50

M24 x 3.00

M20 x 2.5011.1

19.5

38.5

67

107

7.7

613

778

1139

1545

450

428

562

796

1117

M33 x 3.50

M36 x 4.00

2101

2701

1468

1952

325

M16 x 2.00 231

167

M18 x 2.50 318222

Recommended Fastener Torque Chart

Size Size

Torque (ft-lb)

Grade

5

Grade

8

Metric Fasteners Class 8.8 and 10.9

These torque values apply to fasteners

except those noted in the instructions.

Torque (ft-lb)

Grade

5

Grade

8

Size Size

Torque (ft-lb)

Class

8.8

Class

10.9

Torque (ft-lb)

Class

8.8

Class

10.9

Inch Fasteners Grade 5 and Grade 8

CAUTION

Batteries normally produce explosive

gases, which can cause personal injury.

Therefore, do not allow ﬂ ames, sparks, or

lit tobacco to come near the battery. When

charging or working near a battery, always

cover your face and protect your eyes, and

also provide ventilation.

• Batteries contain sulfuric acid, which

burns skin, eyes, and clothing.

• Disconnect the battery before removing

or replacing any electrical components.

CAUTION

Read instructions before assembling.

Fasteners should be ﬁ nger tight until

instructed to tighten according to torque

chart. Use standard methods and practices

when attaching snowplow, including proper

personal protective safety equipment.

WARNING

Gasoline is highly ﬂ ammable and gasoline

vapor is explosive. Never smoke while

working on vehicle. Keep all open ﬂ ames

away from gasoline tank and lines. Wipe

up any spilled gasoline immediately.

WARNING

Vehicle exhaust contains lethal fumes.

Breathing these fumes, even in low

concentrations, can cause death. Never

operate a vehicle in an enclosed area

without venting exhaust to the outside.

Lit. No. 30116, Rev. 01 December 15, 2021

8

BLADE, T-FRAME & HEADGEAR

T-FRAME TO BLADE ASSEMBLY

1. Remove the blade wings from the metal

shipping brackets. Discard the shipping

brackets and replace the cutting edge hardware.

2. Align the hinges of each wing. Position the

T-frame assembly between the blade wings so

that the holes in the T-frame are aligned with

the holes in wing hinges.

3. Insert the pivot pin from top to bottom through

all hinges as shown.

Based on Installation Instructions for ENFORCER V-Plow (Lit. No. 74914, Rev. 01).

Pivot Pin

1/2" x 2-7/8"

Clevis Pins

5/32" x 1-1/2"

Cotter Pins

4. Move the snowplow into a normal operating

position.

5. Remove the protective packaging from the

angle rams.

6. Align the holes in the rod end of the angle ram

with the corresponding holes on the back of

the blade.

7. Install a 1/2" x 2-7/8" clevis pin from the top

down to attach each rod. Secure the clevis

pins with 5/32" x 1-1/2" cotter pins.

ANGLE RAM ADJUSTMENT

The ENFORCER™ V-plow has adjustable angle

rams with two possible mounting positions at

the base end of each ram, nearest the vehicle.

This feature provides a means for making an

adjustment in available ground clearance for when

the snowplow is fully raised and in full angled or

retracted (vee) positions.

The angle rams are installed from the factory

in the inner holes (position A). If additional

ground clearance is desired, reposition the

rams to position B, being sure to use the same

corresponding hole for attaching each ram.

NOTE: Failure to make the adjustment or

failure to use the same corresponding holes

for attaching the rams could result in poor

performance or damage.

Position A

Position B

Inner

Holes

Outer

Holes

V Width 81.00" 85.50"

Scoop

Width 76.66" 69.50"

Angle

Backward 29° 22°

Angle

Forward 29° 37°

Lit. No. 30116, Rev. 01 December 15, 2021

9

2. Insert a 1/4" roll pin.

3. Do not cut the spring tie until after the ﬁ nal

stand shoe adjustment.

Center Deﬂ ector

Blade Guides

BLADE, T-FRAME & HEADGEAR

Pivot

3/8" x 1-1/2"

Cap Screw

3/8"

Locknut

Blade Guide

5/16"

Locknuts

5/16" x 1"

Cap Screws

Clamp

CENTER DEFLECTOR, BLADE GUIDES, AND STAND SHOE

Stand Shoe

Initial stand shoe height adjustment is based

on the receiver height measurement (distance

"d") determined in Step 1 under "Pivot Plate

Hole Position" in Installation Instructions. A ﬁ nal

adjustment of the stand shoe will be made after

attaching the snowplow to the vehicle.

1. Slide the stand shoe into the stand tube and

align the 1/4" hole in the stand tube with the

1/4" hole in the stand shoe as determined from

the chart and illustration below.

Stand Shoe Position Chart

Distance "d" Position

13.0"–14.5" 1

14.5"–16.0" 2

16.0"–17.5" 3

17.5"–19.0" 4

Roll Pin

Do not cut

spring tie.

Position 1

Position 2

Position 3

Position 4

WARNING

The stand plunger spring is shipped

compressed and tied. Do not cut the

spring tie until ﬁ nal stand shoe adjustment

is complete and the roll pin is installed.

Lit. No. 30116, Rev. 01 December 15, 2021

10

BLADE, T-FRAME & HEADGEAR

USING THE BLADE SPRING REPLACEMENT TOOL

1. Park the vehicle on a smooth, level, hard

surface, such as concrete. Lower the blade

to the ground and turn the control OFF.

Disconnect the snowplow from the vehicle or

turn the vehicle ignition to the "OFF" position

and remove the key.

2. The spring replacement tool (PN 20043-1)

ships fully assembled. Before using the tool,

apply a light coating of multipurpose grease to

the threaded end of the spade bolt.

3. Place the tool on the top anchor above the

spring, making sure that the upper end of the

spring bar is between the clevis tabs of the

spring replacement tool. Insert a 1/2" x 2" cap

screw through the lower hole in one clevis tab,

through the top hole in the spring bar, then the

hole in the other clevis tab. Install a 1/2" nut

and hand tighten.

1/2" x 2" cap screw

inserted through clevis

and spring bar.

Spring Bar

Top Anchor

1/4" x 1-1/4" Pin

5/8" Hex Nut

4. Use hand tools to tighten the 5/8" hex nut until

the spring bar is raised enough to access the

pin hole. Insert the 1/4" x 1-1/4" pin through the

pin hole, centering the pin from side to side.

5. Loosen the 5/8" hex nut to lower the spring bar.

Remove the spring tool assembly by removing

the 1/2" x 2" cap screw inserted through the

spring bar in Step 3.

6. Detach the spring from the blade by removing

the shoulder bolt and locknut at the bottom of

the spring bar. Retain the fasteners.

7. Insert the replacement spring with spring bar

up through the top anchor on the blade. Install

the bottom of the spring bar to the anchor on

the trip edge using the retained shoulder bolt

and locknut. Tighten to 50 ft-lb.

8. Repeat Step 3.

9. Use hand tools to tighten the 5/8" hex nut until

the spring bar is raised enough to access the

1/4" x 1-1/4" pin inserted in Step 4. Remove

the pin.

10. Repeat Step 5.

Frame

Clevis

Grease spade

bolt threads.

Lit. No. 30116, Rev. 01 December 15, 2021

11

Hydraulic Fluid

Use WESTERN® hydraulic ﬂ uid rated

to –40°F (–40°C) or other ﬂ uid conforming to

military speciﬁ cation MIL-H-5606 A, such as

Mobil Aero HFA or Shell AeroShell® Fluid 4. Use

of products other than these recommended ﬂ uids

may cause poor hydraulic system performance and

damage to internal components.

The FloStat hydraulic system delivers fast and

uniform speed for blade movement, raising the

blade in two seconds and performing all angling

functions in less than ﬁ ve seconds.

Relief Valve Settings

• Pump Relief Valve (1): 2250 ± 100 psi

1-3/4 turns CCW from fully seated*

• Base-End Relief Valves (2): 3400 ± 100 psi

1-1/8 turns CCW from fully seated*

• Rod-End Relief Valves (2): 2200 ± 100 psi

1-3/4 turns CCW from fully seated*

Pump Motor

12V DC with +/– connection

3.0" dia 0.8 kW motor

2200–2300 psi pump relief valve

3400 psi plowing relief valve

2200 psi back dragging relief valve

0.000477 gal/rev pump

Hydraulic hose SAE 100R1

System Capacity

• Unit reservoir: 1-3/4 quarts

• System total: 2-1/8 quarts

HYDRAULIC SYSTEM

CAUTION

Do not mix diﬀ erent types of hydraulic ﬂ uid.

Some ﬂ uids are not compatible and may cause

performance problems and product damage.

AeroShell® is a registered (®) trademark of Shell Oil Company.

FloStat® HYDRAULIC SYSTEM SPECIFICATIONS

Electrical System (approximate values)

• Solenoid coil resistance = 7 ohm @ room temp.

• Solenoid coil amperage draw = 1.5A

• Motor relay coil resistance = 5.4 ohm

• Motor relay amperage draw = 3A

• Maximum motor amperage draw = 190A over

relief at 2250 psi

• Switch accessory lead draw = 0.75A

Fuses

• Hydraulic unit harness fuses: 5A mini

Fastener Torque Speciﬁ cations

Pump Cap Screws 5/16-18 x 2-1/4 150–160 in-lb

Motor Terminals (+ and –) 5/16-18 Nut 50–60 in-lb

Motor to Manifold Cap Screws M5 x .8 Bolt 30–40 in-lb

Reservoir Screws #10-24 x 5/16 30–35 in-lb

Solenoid Valves 7/8 Hex Head 19–21 ft-lb

Coil Nuts 3/4 Hex-Head Jam Nut 40–60 in-lb

SAE O-Ring Plugs 1/8 or 5/32 Internal Hex 55–65 in-lb

Hydraulic Unit Mount Bolts 3/8-16 x 1 25–33 ft-lb

Check Valves 7/8 Hex Head 19–21 ft-lb

Secondary to Primary Manifolds 1/4-20 x 3-1/2 10–13 ft-lb

Motor Relay Small Terminals #10-32 Nut 15 in-lb max

Motor Relay Large Terminals 5/16-24 Nut 35 in-lb max

Motor Relay Mount Screws 1/4-20 x 5/8 50–70 in-lb

Plow Module Mount Screws 1/4-20 x 3/8 60–70 in-lb

Angle Ram –4 Elbow Fitting Nut 11–12 in-lb

Angle Ram Piston Locknuts 90–100 ft-lb

Lift Ram Piston Nut 90–100 ft-lb

Angle & Lift Rams Gland Nuts 120–150 ft-lb

* The number of turns oﬀ seat is a starting point and may need

further adjustment.

Lit. No. 30116, Rev. 01 December 15, 2021

12

HYDRAULIC UNIT COMPONENTS Breather

Reservoir

Plug

Magnet

O-Ring

Suction

Filter

Plow

Module

Plate

Primary

Manifold

Motor

Relay

Cable

Assembly

Check

Valves

Coil

w/Spades

Plug

Relief

Valve

Relief

Valve

Check

Valves

Coil

w/Spades

Relief

Valve

Coil

w/Spades

Quill

Relief Valve

2-Way

Valve

Coil

w/Spades

2-Way

Valve

4-Way

Valve

4-Way

Valve

4-Way

Valve

HYDRAULIC SYSTEM

Breather Reservoir

Fill

Plug

Valve

Manifold

Quill

Drain

Cap

Motor

Relay

Motor

Lit. No. 30116, Rev. 01 December 15, 2021

13

VALVE LOCATION

HYDRAULIC SYSTEM

RV3

DS Rod-End

Relief Valve

RV1

Pump

Pressure

Valve

RV4

PS Rod-End

Relief Valve

RV5

DS Base-End

Relief Valve

RV6

PS Base-End

Relief Valve

S3C1

S3C2

S4C2

S2

S4C1

S5

S1

CV1

CV2

Quill

Solenoid Cartridge Valves

Coil Valve Type Wire Color

S1 SV08-2004 Blue

S2 SV10-43 Dark Green

S3C1 SV08-47C Brown

S3C2 SV08-47C White

S4C1 SV08-47C Purple

S4C2 SV08-47C Orange

S5 SVCV08-20 Yellow

Lit. No. 30116, Rev. 01 December 15, 2021

14

HYDRAULIC SYSTEM

Blade Movement

Solenoid

Motor M ON ON ON ON ON ON ON ON ON

SV08-2004 S1 ON

SV10-43 S2 ON ON

SV08-47C S3C1 ON ON

S3C2 ON ON

SV08-47C S4C1 ON ON ON

S4C2 ON ON ON

SVCV08-20 S5 ON

VEE SCOOP EXTEND

LEFT

ANGLE

LEFT

ANGLE

RIGHT

RAISE LOWER

RIGHT

RETRACT

RIGHT

EXTEND

LEFT

RETRACT

CARTRIDGE VALVES

The ENFORCER™ V-plow hydraulic system

performs ten blade movement functions.

All functions require the vehicle ignition (key)

switch to be in the "ON" or "ACCESSORY" position

and the power to be activated on the snowplow cab

control.

Nine of the ten hydraulic functions require

energizing the electric motor and opening solenoid

cartridge valves. The LOWER function does not

energize the motor but requires the opening of

one cartridge valve.

Power from the vehicle battery is supplied to the

solenoid coils and the motor relay via the plow

module. The solenoid cartridge valves operate in

various combinations, directed by the cab control,

to send hydraulic ﬂ uid to the snowplow lift and

angle rams or back to the reservoir. (Power is

supplied to the plow module via the battery cable

and motor relay connection.)

Lit. No. 30116, Rev. 01 December 15, 2021

15

HYDRAULIC SYSTEM

CHECK VALVES

The check valves supply make-up ﬂ uid to the

low-pressure side of a ram that is extending or

retracting through a relief valve due to impact on

one or both wings.

A pilot-operated check valve (PC) allows ﬂ uid to ﬂ ow

in only one direction unless it receives pilot pressure

through another circuit to shift it to an open position.

Tighten check valves to 19–21 ft-lb.

Check Valves

CV1

CV08-2004

CV2

CV3

CV4

PC1 CPB-0025

PC2

RELIEF VALVES

When all cartridge valves are closed, hydraulic

ﬂ uid is trapped in the ram by the solenoid cartridge

valves, check valves, base-end relief valves, and

rod-end relief valves.

When the snowplow contacts an object while

plowing, force of the impact increases hydraulic

pressure in the base end of the ram. When

pressure exceeds 3400 psi, the ram's base-end

relief valves open, allowing hydraulic ﬂ uid back to

the reservoir. Due to the small volume on the rod

side of the piston, ﬂ uid is not replaced. This causes

a slight temporary vacuum in that circuit.

When the snowplow contacts an object while back

dragging, force of the impact increases hydraulic

pressure in the rod end of the ram. When pressure

exceeds 2200 psi, the ram's rod-end relief valve

opens, allowing hydraulic ﬂ uid into the reservoir

passage. The base-end check valve allows ﬂ uid to

ﬁ ll the base end of the ram. Because of diﬀ erential

area on either side of the ram's piston, ﬂ uid ﬂ ows

from the reservoir to the base end.

NOTE: See "Striking an Object While Plowing

Forward" and "Striking an Object While Back

Dragging" schematics for details.

Primary

Manifold

PC1

PC2

CV1

CV2

CV3

CV4

Secondary

Manifold

Primary

Manifold

Secondary

Manifold

RV1

RV3

RV4

RV5

RV6

Relief Valve Settings

RV1 Pump 2250 ± 100 psi

RV3 DS Ram Rod End 2200 ± 100 psi

RV4 PS Ram Rod End

RV5 DS Ram Base End 3400 ± 100 psi

RV6 PS Ram Base End

Lit. No. 30116, Rev. 01 December 15, 2021

16

HYDRAULIC SYSTEM

NOTE: Overtightening JIC hose ﬁ tting ends will

result in a fractured ﬁ tting.

DO NOT use thread sealant/tape on hydraulic

hoses or ﬁ ttings. These materials could damage

the product. Always use two wrenches to ensure

proper tightening of ﬁ ttings and hoses.

To install SAE O-ring ﬁ ttings in the valve block

and rams:

1. Turn the jam nut on the ﬁ tting as far back as

possible.

2. Lubricate the O-ring with clean hydraulic ﬂ uid.

3. Screw the ﬁ tting into the port by hand until the

washer contacts the port face and the shoulder

of the jam nut threads.

4. Unscrew the ﬁ tting to its proper position; no

more than one full turn.

5. Using two wrenches, hold the ﬁ tting body

in position and tighten the jam nut until the

washer again contacts port face, then tighten

an additional 1/8 to 1/4 turn to lock the ﬁ tting

in place. Final torque on the jam nut should be

approximately 20 ft-lb.

To install hydraulic hoses:

1. Screw the ﬂ are nut onto the ﬁ tting ﬂ are and

hand tighten it.

2. Align the hose so that there are no twists or

sharp bends and so that it will not be pinched

or pulled by moving parts.

HYDRAULIC FITTING AND HOSE INSTALLATION

PS Ram

Rod End

PS Ram

Base End

DS Ram

Base End

DS Ram

Rod End

Lift

Ram

90º Elbow

Lift Ram

Angle Ram

90º Elbow

–4 Elbow

3. Using a pair of adjustable pliers, hold the

hose in position, and use a wrench to tighten

the ﬂ are nut 1/8 to 1/4 turn beyond hand

tight. Final torque on the ﬂ are nut should be

approximately 20 ft-lb.

4. Reinstall any protective hose wraps in their

original positions.

Ram Sizes

Lift Ram 1-1/4" x 8-5/8"

Angle Rams 1-1/2" x 12" DA

Lit. No. 30116, Rev. 01 December 15, 2021

17

RAM SEAL INSTALLATION

1. Lubricate the O-rings with hydraulic ﬂ uid

before assembly.

2. Assemble the gland components as shown,

then lubricate them with hydraulic ﬂ uid.

3. Remove the piston from the rod and assemble

the piston components as shown.

4. Assemble the gland to threaded end of the rod.

Do not slide the gland over the cross hole in

the rod.

5. Reassemble piston to rod and tighten the nut:

• 90–100 ft-lb for angle ram

• 90–100 ft-lb for lift ram.

6. Assemble the O-ring into the groove on the

rod. Use tape or other protection on the

threads.

7. Apply a bead of medium-strength threadlocker

all around the threads of the gland.

8. Lubricate the piston seals and the inside of the

cylinder.

9. Press the rod assembly into the cylinder and

tighten the gland nut to 120–150 ft-lb.

HYDRAULIC SYSTEM

Nut

Groove

in Rod

Rod

Gland

Piston

Cylinder

Seal Position

Gland

Back-Up Ring

Wiper

Seal

O-Ring

Wear Ring Inner

Backing

Ring

Outer

Seal

Wear

Ring

GLAND SECTION PISTON SECTION

Lit. No. 30116, Rev. 01 December 15, 2021

18

CARTRIDGE & CHECK VALVE REMOVAL BLADE DROP SPEED ADJUSTMENT

HYDRAULIC SYSTEM

It is possible to remove cartridges and check

valves from a hydraulic unit without draining the

hydraulic ﬂ uid from the reservoir.

1. Install the diagnostic harness (PN 29290-2)

following the instructions included with the kit.

2. Cycle through the control functions twice to

remove the pressure in the hydraulic unit.

3. Slowly remove the breather from the top of the

hydraulic unit.

4. To remove cartridges or check valves

without draining the reservoir, proceed with

Steps 5–8 and 10.

To drain the reservoir before replacing

components, remove the drain plug and

completely drain the reservoir. Reinstall the

drain plug. Replace the desired components

and skip to Step 9.

5. Install a 3/8" barb ﬁ tting into the top of the

reservoir tank.

6. Attach a hand-operated vacuum pump to the

barb ﬁ tting.

WARNING

Keep 8' clear of the blade when it is being

raised, lowered, or angled. Do not stand

between vehicle and blade or within 8 feet

of a moving blade. If the blade hits or drops

on you, you could be seriously injured.

Quill

7. Using the vacuum pump, pull a vacuum of

approximately 5 to 10 Hg.

8. You should now be able to remove cartridges

and check valves from the hydraulic unit with

minimal ﬂ uid loss. Maintain the vacuum until

the replacement cartridge/check valve has

been installed. Once the replacement part

has been installed, release the vacuum and

remove the 3/8" barb ﬁ tting.

9. If the reservoir was completely drained at

Step 4 above, reﬁ ll the reservoir with hydraulic

ﬂ uid to 1-1/2" to 2" from the top.

10. Reinstall the breather and remove the

29290-2 diagnostic harness according to the

instructions included with the harness kit.

1. Lower the blade to the ground before making

any adjustment.

2. Remove the hydraulic unit cover.

3. The quill in the valve manifold adjusts the

blade drop speed. Turn the quill IN (clockwise)

to decrease drop speed. Turn the quill OUT

(counterclockwise) to increase drop speed.

4. Stand 8 feet clear of the blade when checking

the drop speed adjustment.

5. Replace the hydraulic unit cover.

Lit. No. 30116, Rev. 01 December 15, 2021

19

VEHICLE-SIDE ELECTRICAL COMPONENTS

HARNESS DIAGRAM

RED

BLK

RED

Battery

10A Fuses

(snowplow park/turn &

snowplow control)

Turn Signal

Configuration Plug

Typical Plug-In Harness

Vehicle Lighting

Harness

(11-pin)

Vehicle Control Harness

Vehicle

Headlamps

Park/Turn

Lamps

Vehicle

Headlamps

Park/Turn

Lamps

Factory Vehicle Harness

Vehicle Battery Cable

To Snowplow Control

To Switched

Accessory

Fire Wall

3-Port Module

(non-DRL or DRL)

BAT

200A Fuse

and Holder

CAUTION

On 2-plug electrical systems, plug covers

shall be used whenever snowplow is

disconnected.

Lit. No. 30116, Rev. 01 December 15, 2021

20

Battery

HCM to

Isolation Module

Harness Assembly

Plow Lights

Plow

Lighting Harness

Vehicle

Lighting

Harness

Vehicle Control Harness

Vehicle Battery Cable

Vehicle

Cable

Assembly

EdgeView™

Wire Assembly EdgeView

Enable Jumper

Turn Signal

Configuration

Plug

15A Fuses

EdgeView

Wire

Ford SD Quad Light

Relay Enable Plug & Cover

RAM Enable

Wire (7-wire

system only)

25A Fuse

10A Fuses

200A Fuse

and Holder**

To Snowplow Control

To Switched

Accessory

YEL

RED

ORN

BLK

YEL

Vehicle

Grounding Post*

* See the Battery Connections section

for more information.

** Included in 200A Fuse Kit (PN 90730)

Install with

wires down.

VEHICLE-SIDE ELECTRICAL COMPONENTS

HARNESS DIAGRAM – LED HEADLAMPS

CAUTION

On 2-plug electrical systems, plug covers

shall be used whenever snowplow is

disconnected.

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Western Enforcer Mechanic's Guide

Western Enforcer Mechanic's Guide

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