Ransomes 70538, 70539, 70540, 70541 User manual

7

4263110-Rev B 7-1

Chapter 7

Steering

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Tests and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Steering Linkage Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Steering Tower Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Steering Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Steering Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Steering Tower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

Steering Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

Tie Rod Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

Steering Axle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21

7-2 4263110-Rev B

STEERING

7

Specifications

Test and Adjustment Specifications

Steering Axle Alignment Toe-In Measurement in. (mm) 0.062–0.25 (1.6–6.3)

Steering Stop Bolt Gap

in. (mm) 0.01–0.02 (0.25–0.5)

Repair Specifications

Steering Wheel Nut lb-ft (N·m) 25–30 (34–41)

Steering Unit End Cover-to-Housing Screw Torque

lb-ft (N·m) 20–24 (27–33)

Steering Cylinder Fittings Torque

lb-ft (N·m) 17 (23)

Steering Cylinder Castle Nut Torque

lb-ft (N·m) 80–100 (108–136)

Steering Cylinder Rod End Nut Torque

lb-ft (N·m) 80 (108)

Steering Cylinder Rod Nut Torque

lb-ft (N·m) 35–40 (47–54)

Tie Rod Castle Nut Torque

lb-ft (N·m) 80–100 (108–136)

Tie Rod End Jam Nut Torque

lb-ft (N·m) 110–130 (149–176)

STEERING

4263110-Rev B 7-3

7

Component Location

See Figure 7-1.

Figure 7-1

1 Steering Axle Assembly 4 Tilt Lever 7 Steering Unit

2 Steering Cylinder 5 Steering Wheel 8 Steering Tower Cover

3 Tie Rod 6 Steering Column

TN4083, TN4136, TN4246

8

7

2

1

4

5

6

3

7-4 4263110-Rev B

STEERING

7

Tests and Adjustments

Steering Linkage Adjustments

See Figures 7-2 through 7-5.

IMPORTANT

The following adjustments must be performed in

sequence to ensure correct steering linkage

adjustment.

Tie Rod Adjustment

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Turn the wheels to the straight-ahead position.

Figure 7-2

3. Measure the distance between the center lines of the

tires at the front (1) and rear (3) of the tires. The

measurement (toe-in) at the front of the tires should

be 0.062–0.25 in. (1.6–6.3 mm) less than the

distance at the rear of the tires. If the toe-in does not

meet specifications, adjust as follows:

a. Loosen the jam nuts (2 and 4) on both ends of

the tie rod (5).

b. Turn the tie rod (5), as necessary, to obtain

proper toe-in (1).

c. Retighten jam nuts (2 and 4).

4. Proceed to “Turning Radius (Equal Angle)

Adjustment” on page 7-4.

Turning Radius (Equal Angle) Adjustment

IMPORTANT

The steering linkage must be adjusted in proper

sequence. Do not perform this procedure until the tie

rod adjustment has been performed. (See “Tie Rod

Adjustment” on page 7-4.)

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

Figure 7-3

2. Turn steering stop bolts (1 and 2) out as far as

possible without removing them.

3. Drive unit onto dirt or gravel area where tire tracks

can be seen, and with enough area to make a

complete 360° turn with the mower.

4. Turn steering wheel all the way to the right, and

make a complete 360° turn. Measure the distance

between the inside tire tracks.

5. Turn the steering wheel all the way to the left, and

make a complete 360° turn. Measure the distance

between the inside tire tracks.

TN3997

4

1

3

2

5

TN3999

1

2

STEERING

4263110-Rev B 7-5

7

Figure 7-4

6. Loosen rod nut (3).

7. Adjust turning radius by turning steering cylinder rod

(4) as required.

8. Repeat steps 4 through steps 7 until equal turning

radius is obtained between a right hand, and left

hand turn.

9. Tighten rod nut (3).

10. Proceed to “Steering Stop Bolt Adjustment.”

Steering Stop Bolt Adjustment

IMPORTANT

The steering linkage must be adjusted in proper

sequence. Do not perform this procedure until the tie

rod and turning radius (equal angle) adjustments

have been performed. (See “Tie Rod Adjustment” on

page 7-4 and “Turning Radius (Equal Angle)

Adjustment” on page 7-4.)

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

Figure 7-5

!

WARNING

!

WARNING

IMPORTANT

It is important to lift and support the machine, or the

machine will move.

2. Raise and support rear of machine with jackstands.

3. Turn steering wheel all the way to the left. Adjust

right side steering stop bolt (2) to obtain 0.01–0.02 in.

(0.25–0.5 mm) gap between stop bolt and axle.

4. Turn steering wheel all the way to the right. Adjust

left side steering stop bolt (1) to obtain 0.01–0.02 in.

(0.25–0.5 mm) gap between steering stop bolt and

axle.

TN4104

4

3

Prevent personal injury. Use a properly rated

lifting device. Always be sure the load is

balanced before lifting.

• Support the machine using properly rated

jackstands. Never work under a machine

supported only by a jack.

• Do not use wood or concrete blocks to

support the machine. Failure to properly

support the machine may result in death or

serious injury.

TN3999

1

2

7-6 4263110-Rev B

STEERING

7

Repair

Steering Wheel

Removal and Installation

See Figure 7-6.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

Figure 7-6

2. Remove (unsnap) cap (1) from steering wheel (4).

3. Remove nut (2) and internal-tooth lock washer (3).

4. Remove steering wheel (4) and four washers (5)

from steering column (6).

Installation Notes

• Install steering wheel by reversing the order of

removal.

• Tighten the steering wheel nut (2) to 25–30 lb-ft

(34–41 N·m).

Steering Tower Cover

Removal

See Figure 7-7.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

Figure 7-7

2. Using the steering tilt control, tilt the steering column

(2) rearward.

3. Remove six screws (3).

4. Carefully lift steering tower cover (1) and remove

from machine.

TN2969

3

2

6

1

4

5

TN3996

3

1

2

STEERING

4263110-Rev B 7-7

7

Installation

See Figure 7-8.

Figure 7-8

1. Position steering tower cover (4) over steering tower

(1) and ensure head of carriage bolts (2) just touch

steering tower cover on both sides as shown in

Figure 7-8. Adjust carriage bolts (2) and nuts (3) as

necessary to achieve proper contact.

2. Secure steering tower cover with six mounting

screws (5).

Steering Column

Removal and Installation

See Figure 7-9.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove steering wheel. (See “Steering Wheel” on

page 7-6.)

3. Remove steering tower cover. (See “Steering Tower

Cover” on page 7-6.)

Figure 7-9

4. Using the tilt lever, tilt the steering column forward.

5. Support steering column (1).

6. Remove four screws (2), four lock washers (3), and

steering column (1).

Installation Note

Install steering column by reversing the order of removal.

TN4334

2

4

1

3

5

3

2

TN4324

2

3

1

7-8 4263110-Rev B

STEERING

7

Steering Unit

Removal and Installation

See Figures 7-10 and 7-11.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove steering wheel. (See “Steering Wheel” on

page 7-6.)

3. Remove steering tower cover. (See “Steering Tower

Cover” on page 7-6.)

4. Remove steering column. (See “Steering Column” on

page 7-7.)

NOTE

If available, use a portable hydraulic filtering unit to

remove the hydraulic oil from the hydraulic tank. Place

the filtering unit suction hose in the tank, and pump the oil

into a clean and sealable container.

5. Using the tilt lever, tilt the steering column rearward.

Figure 7-10

NOTES

• Label all hydraulic hoses and record their locations

before disconnecting to ensure correct installation.

• Close all openings with caps or plugs to prevent

contamination.

6. Disconnect hydraulic hose (1) from steering unit port

“P.”

7. Disconnect hydraulic hose (2) from steering unit port

“L.”

8. Disconnect hydraulic hose (3) from steering unit port

“R.”

9. Disconnect hydraulic hose (4) from steering unit port

“E.”

10. Disconnect hydraulic hose (5) from steering unit port

“T.”

Figure 7-11

11. Using the tilt lever, tilt the steering column forward.

12. Support steering unit (9).

13. Remove four screws (6), four lock washers (7), four

spacers (8), and steering unit (9).

Installation Notes

• Install steering unit by reversing the order of removal.

• Check hydraulic oil level. Add oil as necessary.

• Start the machine and check for hydraulic leaks and

cylinder operation. Repair as necessary.

E

TN3995

1

5

4

2

3

TN4325

9

7

6

8

STEERING

4263110-Rev B 7-9

7

Steering Unit Service Fixture

See Figures 7-12 and 7-13.

Figure 7-12: Steering Unit Service Fixture

NOTICE

Figure 7-13

1. Place the steering unit service fixture (11) securely in

a vise.

2. Place the steering unit (10) into the service fixture

(11), input shaft down.

3. Secure the steering unit to the service fixture using

four M6-1 x 20 mm screws and M6 lock washers (12

and 13).

Required Tools or Equipment

Steering Unit Service Fixture

1 0.165 in. (4.2 mm) 6 2.0 in. (50.8 mm)

2 0.260 in. (6.6 mm) Ø Hole (4) 7 4.0 in. (101.5 mm)

3 2.283 in. (58.0 mm) Ø 8 1.5 in. (38.1 mm) Ø Hole

48.0 in. (202 mm) 945° (4)

5 2.0 in. (50.8 mm)

Do not clamp the steering unit directly into a vise.

Clamping the steering unit directly into a vise

may damage or distort the steering unit.

TN2142

1

5

3

2

6

7

8

4

9

TN2143

10

11

1312

7-10 4263110-Rev B

STEERING

7

Disassembly

See Figures 7-14 and 7-15.

Figure 7-14

1 Special Screw (5) 8 Distr butor Plate 15 Spool 22 Emergency Steering Ball

2 O-Ring (5) 9 Cardan Shaft 16 Thick Bearing Race 23 Housing

3 End Cover 10 O-Ring 17 Bearing 24 Name Plate

4 Spacer 11 Sleeve 18 Thin Bearing Race 25 Steering Relief Valve

5 O-Ring (2) 12 Cross Pin 19 Shaft Seal 26 Steering Relief Valve Spring

6 Gearwheel 13 Spring Set 20 Check Valve Ball

7 Gearwheel Rim 14 Spring Retaining Ring 21 Ball Stop

R

L

P

T

TN4339

1

2

3

4

5

7

5

8

9

10

11

12

13

14

15

16

17

22

19

20

21

23

24

25

26

6

18

STEERING

4263110-Rev B 7-11

7

!

CAUTION

NOTES

• Before attempting repairs or disassembly of any

hydraulic components, thoroughly clean the

components and work area. A clean work area is

essential to satisfactory operation of repaired

hydraulic components.

• Utilize steering unit service fixture for disassembly.

(See “Steering Unit Service Fixture” on page 7-9.)

1. Scribe a line from port “P” to bottom of steering unit.

This line can be used to determine port “P” with end

cover removed and for proper orientation of sections

for assembly.

2. Remove five special screws (1) and five O-rings (2).

3. Remove end cover (3) by sliding it off to the side.

4. Remove cardan shaft spacer (4).

5. Hold a hand under the gearwheel rim (7) and

gearwheel (6) to keep the gearwheel from falling out,

and remove the gearwheel rim (7), gearwheel (6),

and two O-rings (5).

6. Remove cardan shaft (9).

7. Remove distributor plate (8).

8. Remove O-ring (10) from housing (23).

9. Remove spool assembly.

10. Remove thin bearing race (18), bearing (17), and

thick bearing race (16).

11. Remove shaft seal (19).

12. Remove spring retaining ring (14).

13. Carefully press cross pin (12) out of the spool (15)

and sleeve (11), and remove spool from sleeve.

14. Press spring set (13) out of spool (15).

15. Remove fixture from vise and shake out check valve

ball (20), emergency steering ball (22), and ball stop

(21). Re-secure service fixture in vise with input shaft

down.

16. Remove housing (23) from service fixture.

17. Remove steering relief valve (25) and steering relief

valve spring (26).

Figure 7-15

Wear eye protection when assembling and

disassembling the steering unit. Springs and

other objects may be propelled into the air,

causing eye injury.

R

L

P

TN4340

1

Steps 1-3

Scribe line

aligned with

port “P.”

Steps 4-5

Steps 6-8 Steps 9-11

Steps 12-14 Step 15

Step 17

Spool

Assembly

Included in Seal Kit

2

3

4

6

7

5

9

8

10

23

16

17

18

19

23

12

15

11

14

13

20

21

22

23

25

26

23

7-12 4263110-Rev B

STEERING

7

Assembly

See Figures 7-16 through 7-18.

Figure 7-16

1 Special Screw (5) 8 Distr butor Plate 15 Spool 22 Emergency Steering Ball

2 O-Ring (5) 9 Cardan Shaft 16 Thick Bearing Race 23 Housing

3 End Cover 10 O-Ring 17 Bearing 24 Name Plate

4 Spacer 11 Sleeve 18 Thin Bearing Race 25 Steering Relief Valve

5 O-Ring (2) 12 Cross Pin 19 Shaft Seal 26 Steering Relief Valve Spring

6 Gearwheel 13 Spring Set 20 Check Valve Ball

7 Gearwheel Rim 14 Spring Retaining Ring 21 Ball Stop

R

L

P

T

TN4339

1

2

3

4

5

7

5

8

9

10

11

12

13

14

15

16

17

22

19

20

21

23

24

25

26

6

18

STEERING

4263110-Rev B 7-13

7

!

CAUTION

NOTES

• Inspect all parts for wear or damage and replace as

necessary.

• Lubricate all parts with clean hydraulic oil before

assembly.

• Always install new O-rings for assembly; used parts

may leak.

• Utilize steering unit service fixture for assembly. (See

“Steering Unit Service Fixture” on page 7-9.)

• Letter references (A-C) refer to components of Sauer

Danfoss Shaft Seal Tool.

1. Assemble relief valve (25 and 26) to housing (23).

Use new check valve o-ring included in seal kit.

2. Assemble shaft seal (19) onto guide (A).

3. Insert outer sleeve (B) into housing (23).

4. Place guide (A) on end of guide tool (C). Lubricate

shaft seal and O-ring.

5. Slide guide tool (C) into outer sleeve (B) and press

shaft seal into position. Remove outer sleeve and

guide tool. Guide (A) should remain inside housing

after seal is installed.

6. Install thin bearing race (18), bearing (17), and thick

bearing race (16) into housing (23).

7. Slide spool (15) into sleeve (11) and align so that

cross pin slots are adjacent to each other.

8. Center the spring set (13) in the spool and sleeve

assembly, and install spring retaining ring (14).

NOTES

• When installing spring set, insert the curved springs

between the flat springs and push in place.

• Spring retaining ring (14) must be able to rotate

unimpeded by the springs.

9. Press cross pin (12) in the spool and sleeve

assembly.

10. While holding the cross pin in place, guide the spool

and sleeve assembly into housing (23). When

installed, cross pin (12) must point towards port “P.”

Spool will push seal guide (A) out of housing as it is

installed.

Figure 7-17

Wear eye protection when assembling and

disassembling the steering unit. Springs and

other objects may be propelled into the air,

causing eye injury.

Required Tools and Materials

Seal Kit (Jacobsen PN 4197940)

Shaft Seal Tool (Sauer Danfoss SJ150L4011-01)

TN4341

Step 1

Included in Seal Kit

Step 2

Steps 3-5

Step 6 Steps 7-9

Step 10

25

26

23

19

A

B

C

23

16

17

18

23

11

12

15

13

14

23

Spool

Assembly

Cross

L

R

P

T

E

7-14 4263110-Rev B

STEERING

7

11. Place emergency steering ball (22) in port “P.”

12. Place ball stop (21) in port “P.”

13. Place check valve ball (20) in port “P.”

14. Install O-ring (10) in housing (23).

15. Place distributor plate (8) on housing (23) and align

scribe line and mounting holes.

16. Assemble cardan shaft (9) to spool (15) ensuring

cardan shaft engages with cross pin (12).

17. Place gearwheel (6) over the distributor plate (8).

NOTE

See step 16 in Figure 7-18. When installing the

gearwheel, the gearwheel must be correctly aligned so

that it engages with the cardan shaft. The cross pin (12)

in the spool assembly must line up with the bottom of the

spline in the gearwheel (6).

18. Install O-rings (5) into groove on each side of the

gearwheel rim.

19. Place gearwheel rim (7) over the distributor plate (8)

and gearwheel (6). Align scribe line and mounting

holes.

20. Install spacer (4) over the cardan shaft (9).

21. Using scribe line, align end cover (3) to housing (23).

Install special screws (1). Tighten screws in an

alternating pattern to 20–24 lb-ft (27–33 N·m).

NOTE

Place cover so that the hole marked “P” lines up with port

“P” in the housing.

22. Remove the steering unit from the service fixture.

23. Assemble steering unit into mower.

NOTE

Do not tighten steering column mounting hardware until

steering relief pressure has been set. Column must be

removed when adjusting relief valve.

24. Set steering unit relief pressure. (See “Steering

Relief Valve Adjustment” on page 6-74.)

!

WARNING

Figure 7-18

Keep hands and arms clear of steering wheel on

initial startup of engine. Steering unit can

become a hydraulic motor if step 17 is not

correctly performed.

R

L

P

T

TN4342

20

21

22

23

Steps 11-13 Steps 14-16

Step 16

Steps 17-20 Step 21

9

8

10

23

4

5

6

8

Cross

Spline

Bottoms

7

1

2

3

Scribe line

aligned with

port “P.”

Included in Seal Kit

L

P

R

E

T

Port

“P”

STEERING

4263110-Rev B 7-15

7

Steering Tower

Removal and Installation

See Figures 7-19 and 7-20.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove steering column. (See “Steering Column” on

page 7-7.)

Figure 7-19

3. Using the tilt lever, tilt the steering unit bracket (1)

forward.

4. Support steering unit (6) and steering unit bracket

(1).

5. Remove two nuts (4), spacers (5), flange bearings

(2), and shoulder bolts (3). Move steering unit (6) and

steering unit bracket (1) aside to provide clearance

for steering tower removal.

Figure 7-20

NOTE

Left side of steering tower weldment removed for picture

clarity.

6. Disengage tilt cable (10).

7. Remove two screws (11) and tilt cable (10).

8. Remove screw (16) and nut (13).

9. Remove nut (7), three washers (8), bolt (9), and gas

spring (17).

10. Remove four carriage bolts (14) and flange nuts (15),

and remove steering tower (12).

Installation Note

Install steering tower by reversing the order of removal.

TN4329

6

1

4

5

2

3

TN4000

7

10

17

14

16

15

12

8

9

11

13

7-16 4263110-Rev B

STEERING

7

Steering Cylinder

Removal and Installation

See Figures 7-21 and 7-22.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove tie rod assembly. (See “Tie Rod Assembly”

on page 7-19.)

3. Thoroughly clean the area surrounding the steering

cylinder, especially the hydraulic hose fittings.

Figure 7-21

NOTES

• Label all hydraulic hoses and record their locations

before disconnecting to ensure correct installation.

• Close all openings with caps or plugs to prevent

contamination.

4. Disconnect hydraulic hoses (4 and 8) from steering

cylinder (6).

Figure 7-22

5. Support the steering cylinder (6).

6. Remove cotter pins (1 and 9) and castle nuts (2 and

10) from both ends of the steering cylinder (6).

7. Using a ball joint removal tool, remove the ball joint

from the steering arm. Remove the steering cylinder

(6) from the steering arm (11) and steering axle (3).

8. Remove fittings (5 and 7) from steering cylinder (6).

Installation Notes

• Install steering cylinder by reversing the order of

removal.

• Tighten fittings (5 and 7) to 17 lb-ft (23 N·m).

• Tighten castle nuts (2 and 10) to 80–100 lb-ft (108–

136 N·m). Adjust nuts as necessary to align the slots

with the holes in the rod ends.

• Install new cotter pins (1 and 9).

• Check hydraulic oil level. Add oil as necessary.

• Start the machine and check for hydraulic leaks and

cylinder operation. Repair as necessary.

• Check steering linkage adjustments. (See “Steering

Linkage Adjustments” on page 7-4.)

T

N

4

1

0

3

8

6

4

5

7

1

2

3

TN4104

10

11

6

9

STEERING

4263110-Rev B 7-17

7

Disassembly, Inspection, and Assembly

See Figure 7-23.

Figure 7-23

1. Remove retaining ring (5) and pull assembled rod (1)

out of barrel (16).

2. Remove piston nut (14).

3. Remove piston O-ring (13), piston seal (12), piston

(11), rod guide O-ring (10), backup ring (9), rod guide

(8), rod seal (7), and wiper (6) from rod (1).

!

WARNING

1 Rod 5 Retaining Ring 9 Backup Ring 13 Piston O-Ring

2 Rod End Nut 6 Wiper 10 Rod Guide O-Ring 14 Rod Nut

3 Grease Fitting 7 Rod Seal 11 Piston 15 Barrel End

4 Rod End 8 Rod Guide 12 Piston Seal 16 Barrel

TN4295

14

13

10

9

8

7

6

5

12

11

1

16

3

2

4

15

Use appropriate eye protection when using

compressed air for cleaning or drying purposes.

Compressed air can cause serious personal

injury. Use safety reduction valves to reduce the

air pressure to a safe level before use.

7-18 4263110-Rev B

STEERING

7

NOTICE

4. Clean all parts using clean solvent, and dry using

compressed air.

5. Inspect all parts for excessive wear, cracks, broken

parts, and damaged threads.

6. Inspect the barrel for dents, score lines, or grooves

inside.

7. Inspect the fittings for wear and damage.

Assembly Notes

• Assemble steering cylinder by reversing the order of

disassembly.

• Lubricate all parts with clean hydraulic oil before

assembly.

• Install new seals and O-rings.

• Adjust rod (1) so one thread shows on rod at rod nut

(2) and tighten rod nut to 80 lb-ft (108 N·m).

• Tighten rod nut (14) to 35–40 lb-ft (47–54 N·m).

• Lubricate grease fittings (3) with grease that meets or

exceeds NLGI Grade 2 LB specifications.

It is important that all components are absolutely

clean, as contamination can result in serious

damage and/or improper operation.

Never use shop towels or rags to dry parts after

cleaning, as lint may clog passages. Dry parts

using compressed air.

Required Materials

Seal Kit (Jacobsen PN 4113655)

STEERING

4263110-Rev B 7-19

7

Tie Rod Assembly

Removal and Installation

See Figures 7-24 and 7-25.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

Figure 7-24

Figure 7-25

2. Support the tie rod assembly (2).

3. Remove cotter pins (5) and castle nuts (6) from both

ball joints (3 and 6).

4. Using a ball joint removal tool, remove tie rod ball

joints from steering arms (1 and 7), and remove the

tie rod assembly (2).

Installation Notes

• Install the tie rod assembly by reversing the order of

removal.

• Before installing the tie rod assembly, verify that the

ball joint tapers and the mating tapered surfaces in

the steering arms are free of burrs, dirt, and debris.

DO NOT apply lubricant of any kind to these

surfaces.

• Tighten castle nuts (5) to 80–100 lb-ft

(108–136 N·m). Adjust (tighten) nuts as needed to

align the slots with the holes in the ball joints.

• Always install new cotter pins (4).

• Lubricate grease fittings (4) with grease that meets or

exceeds NLGI Grade 2 LB specifications.

• Adjust steering linkage. (See “Steering Linkage

Adjustments” on page 7-4.)

TN4101

6

2

3

5

4

1

TN4102

5

6

2

6

4

7

7-20 4263110-Rev B

STEERING

7

Disassembly, Inspection, and Assembly

See Figure 7-26.

Figure 7-26

Disassembly Notes

• Before disassembling the tie rod assembly, measure

and record the rod end center-to-center distance (6).

• Record the number of turns required to remove ball

joints from tie rod.

Assembly Notes

• Assemble the tie rod assembly by reversing the order

of disassembly.

• Using information recorded during disassembly,

install ball joints (5 and 6) into tie rod (2) with the

correct number of turns.

• Verify the ball joint center-to-center distance (6);

correct as necessary.

• Tighten jam nuts (1 and 3) to 110–130 lb-ft (149–176

N·m).

• Lubricate grease fittings (4) with grease that meets or

exceeds NLGI Grade 2 LB specifications.

1 Jam Nut, Left Hand Thread 4 Grease Fitting 6 Rod End Center-to-Center Distance

2 Tie Rod 5 Ball Joint, Right Hand Thread 7 Ball Joint, Left Hand Thread

3 Jam Nut, Right Hand Thread

TN4284

1

6

7

5

2

3

4

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Ransomes 70538, 70539, 70540, 70541 User manual

Ransomes 70538, 70539, 70540, 70541 User manual

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