Shibaura SX21, SX24, SXM54, SXM60 Workshop Manual

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SHIBAURA
TRACTOR & MOWER
SX21/24 TRACTOR
SXM54/60 MOWER
W
ORKSHOP
MANUAL
MODEL
Introduction
Ishikawajima-Shibaura Machinery Co., Ltd.
Tractor Division Quality Assurance Department
In order to refine the Shibaura tractor series furthermore, SX series tractors
were developed this time.
These are economical tractors provided with practical functions and high
power.
They meet users’ needs according to efficient and economical specifications
requiring no after-care.
This manual describes structure, functions, maintenance and service procedures
for the SX tractors to obtain their functions fully and for safe operation.
Please read this carefully to promote sales and service, to improve the service
techniques and guide users for proper operation of Shibaura tractors.
Figures or other conditions in this manual may be changed without notice in
order to improve the performance or for other objects.
2
CONTENTS
1. General Information・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・3
2. Specification & Structure・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・6
3. Separating the tractor・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・28
4. Installation and trial run ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・37
5. Engine systems ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・45
6. Front wheel drive・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・93
7. Differential and rear axle・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・103
8. Hydrosrstatic transmission ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・116
9. PTO・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・143
10. Breaks・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・168
11. Hydraulic systems・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・175
12. Power steering・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・206
13. Electrical system・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・230
14. Mid mount deck・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・276
3
CONTENTS
15. PRECAUTION BEFORE SERVICING・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・3
16. BASIC UNDERSTANDING ON SERVICE・・・・・・・・・・・・・・・・・・.・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・3
17. METRIC BOLT TORQUE SPECIFICATIONS・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・4
4
1. PRECAUTIONS BEFORE SERVICUING
1. Have the tractor washed clean and have the oil, fuel, and cooling water drained out depending on the work required.
2. Service shop should always be kept clean to prevent dust from rising and should be well lit.
3. The disassembled parts should have the oil and grease washed off and arranged on a stand separated by groups.
4. Clothing, service tools and equipments should be checked to ensure safety at all times.
2. BASIC UNDERSTANDING SERVICING
1. Engine, transmission, and hydraulic components have been specially manufactured with a high degree of accuracy.
Care should be exercised to maintain them in a clean state. Do not disassemble unnecessarily.
2. Defective parts due to wear and other causes shall be discarded and new parts ordered with the tractor mode, serial
No., code No., and part name clearly defined. (Keep the defective parts on hand to show to the customer.)
3. When assembling, it is essential to have oil applied to all moving parts so that they will be provided with initial oil
film until normal lubrication takes place.
4. Unless specially instructed, bolts and nuts shall be tightened to the correct setting using a torque wrench.
5
METRIC BOLT TORQUE SPECIFICATIONS
Bolt Size Grade No.
Coarse Thread Fine Thread
Pitch (mm) Newton Meters
Kilo-gram
Meters
Pitch (mm)
Newton-
Meters
Kilo-gram Meters
M6
4T, 4.8
1.0
4.9-6.9 0.5-0.6
- - - - - - - - - - - - - - - 7T, 8T, 8.8 8.3-11.3 0.85-1.15
10T, 11T 11.7-15.7 1.2-1.6
M8
4T, 4.8
1.25
12.7-16.7 1.3-1.7
1.0
15.2-20.1 1.55-2.05
7T, 8T, 8.8 22.6-28.4 2.3-2.9 26.5-34.3 2.7-3.5
10T, 11T 28.5-36.3 2.9-3.7 30.4-40.2 3.1-4.1
M10
4T, 4.8
1.5
25.5-33.3 2.6-3.4
1.25
28.4-36.2 2.9-3.7
7T, 8T, 8.8 44.1-55.9 4.5-5.7 49.0-62.7 5.0-6.4
10T, 11T 54.0-69.6 5.5-7.1 57.8-73.5 5.9-7.5
M12
4T, 4.8
1.75
37.3-47.0 3.8-4.8
1.25
43.1-54.9 4.4-5.6
7T, 8T, 8.8 65.7-83.3 6.7-8.5 74.5-94.1 7.6-9.6
10T, 11T 92.0-116 9.4-11.8 99.0-126 10.1-12.9
M14
4T, 4.8
2.0
62.8-80.4 6.4-8.2
1.5
69.6-87.2 7.1-8.9
7T, 8T, 8.8 104-132 10.6-13.4 117-148 11.9-15.1
10T, 11T 139-175 14.2-17.8 149-184 15.2-18.8
M16
4T, 4.8
2.0
86.1-110 8.8-11.2
1.5
91.1-114 9.3-11.7
7T, 8T, 8.8 149-185 15.2-18.8 157-192 16.0-19.6
10T, 11T 205-255 21-26 221-269 22.5-27.5
M18
4T, 4.8
2.0
113-141 11.6-14.4
1.5
132-162 13.4-16.6
7T, 8T, 8.8 196-236 20-24 231-279 23.5-28.5
10T, 11T 275-333 28-34 298-367 30.5-37.5
M20
4T, 4.8
2.5
144-180 14.7-18.3
1.5
172-210 17.5-21.5
7T, 8T, 8.8 240-290 24.5-29.5 275-333 28.0-34.0
10T, 11T 363-441 37-45 397-485 40.5-49.5
Bolt head identification mark Strength grade
Example
4.8
4.8
8.8
10.9
Indicates yield point,
80% of tensile strength
32 kgf/mm
2
Tensile strength
40 kgf/mm
2
1 - SPECIFICATION & STRUCTURE
6
CONTENTS
1. SPECIFICATION ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・7
2. EXTERNAL VIEWS・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・9
3. ENGINE SECTIONAL VIEW・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・10
4. POWER FLOW・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・11
1) Four wheel drive power flow・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・11
2) PTO power flow・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・12
5. OIL FLOW・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・14
1) Oil flow schematic・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・14
2) Power steering・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・15
3) Hydraulic power lift system・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・19
6. MOWER LIFT LINKAGE・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・22
1) Operation・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・22
7. HST・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・25
8. WIRING・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・26
1 - SPECIFICATION & STRUCTURE
7
1. SPECIFICATION
Model
SX21 SX24
HST
Main Body
Length (Lower Link horizontal) 2,445 mm
Height
Top point a ROPS folded 1,557 mm (AG)
Top ROPS 2,285 mm (AG)
Width 1,180 mm (Turf), 1,175 mm (BAR), 1,085 mm (AG)
Wheel base 1400 mm
Minimum ground clearance 223 mm (AG)
Minimum turning radius
Weight (W/ROPS) 750 kg (AG) 748 kg (AG)
Front wheel
Tire size
20×8.00-10 (Turf), 5-12 (BAR), 6-12 (AG)
Inflation See “Operator’s Manual”
Tread 940 mm (TURF), 940 mm (BAR), 910 mm (AG)
Rear wheel
Tire size
29×12.00-15 (TURF) 8-16 (BAR), 9-5-16 (AG)
Inflation See “Operator’s Manual”
Tread 870 mm (TURF), 870 mm (BAR), 910 mm (AG)
Clutch Non
Speed change method Hydrostatic Transmission
Running speed changes 2 Steps Forward and 2 Steps Reverse
Differential 4 Pinion Spiral Bevel Drive Type without Diff, Lock
Brakes Wet type Disc (R.H., L.H. Independently)
Steering Full Hydraulic Power Steering
No. of PTO speeds 1 Speed
PTO shaft size 35 mm in Diameter with 6 Square Splines
Three point linkage size Category 1
PTO shaft ground clearance
Mid 261 mm
Rear 419 mm
PTO shaft rotating direction Clock wise as seen from output end side
Engine
Model S753 S773
Type Water-Cooled 4-Cycle Vertical Diesel Engine
Number of cylinders 3
Total stroke volume 954 cc 1005 cc
Continuous rated speed
3000±50 rpm
Compression ratio 24 : 1 24 1
Fuel
Diesel fuel oil
Starting Method By starting motor
1 - SPECIFICATION & STRUCTURE
8
The ground speeds are engine speed at 3000 rpm.
Ground speeds
Range Hydrostatic transmission
Forward
(km/h)
L
0 – 8.1 (with turf 26×12.00 – 12 rear tires)
H 0 – 16.3 (with turf 26×12.00 – 12 rear tires)
Reverse
(km/h)
L
0 – 5.4 (with turf 26×12.00 – 12 rear tires)
H
0 – 10.9 (with turf 26×12.00 – 12 rear tires)
No. of PTO Speeds 1
PTO Speed (rpm)
(at engine speed 3000 rpm)
Rear PTO 541
Mid PTO 2185
Capacities
Fuel tank 29.5 Liters
Engine oil With Filter Change 3.3 Liters
Cooling water 3.5 Liters
Transmission oil 13 Liters
Hydraulics Transmission oil used in common
Front axle gear case 2.0 Liters
Electrical system
Grounding Negative (-)
Battery 12 Volt, 36 amp.
Starting motor 12V-1.0 kW
Glow plug 11V-9.5 A
Alternator 12V-40 A
Regulator 13.8V - 14.8V (Adjusted voltage)
Head light 65W / 55W
Horn 12V
Brake lamp 21W
Small lamp 5W
Tail lamp 5W
Flasher lamp 21W
Each warning lamp 3.4W
High beam indicator 1.7W
License lamp 5W
1 - SPECIFICATION & STRUCTURE
9
2. External Views
1
unit : mm
Model
A B C D E F G
SX 21/24
(TURF tyres)
2445 2282 185 1180 1400 940 870
SX 21/24
(BAR tyres)
2445 2288 190 1175 1400 940 870
SX 21/24
(AG tyres)
2445 2285 190 1085 1400 910 910
1 - SPECIFICATION & STRUCTURE
10
3. ENGINE SECTIONAL VIEW
2
1 - SPECIFICATION & STRUCTURE
11
4. POWER FLOW
1) Four wheel drive
3
1. HST
2. Range slide gear
3. FWD take-off box
4. FWD drive shaft
5. Drive pinion
6. Differential assembly
7. Final drive drop box
8. Front wheel hub
Manual FWD
The FWD is a direct FWD system utilizing a sliding gear in the FWD take-off box attached to the rear transmission
housing.
The operator places the FWD control lever in the engaged position, causing a shift fork in the transmission housing to
engage a sliding gear in the FWD take-off box, 3. The sliding gear engages the FWD output shaft through a series of
splines on the output shaft and sliding gear. This causes the FWD drive shaft, 4, to rotate. The FWD drive shaft turns the
pinion shaft and ring gear located in the front axle differential, 6. Power is directed through the front differential to the
axle shafts and a series of counter gears in the final drive drop boxes, 7, containing the wheel spindles and hubs. This
causes the wheel hubs, 8, to rotate, providing powered drive to the front wheels.
The operator may choose to disengage the FWD feature completely by moving the control lever to the disengaged
position.
1 - SPECIFICATION & STRUCTURE
12
2) PTO power flow
(1) PTO clutch lever “ Disengaged” position
4
(2) PTO clutch lever “Engaged” position and rear PTO “Engaged position”
5
1 - SPECIFICATION & STRUCTURE
13
(3) PTO clutch lever “Engaged” position and mid PTO “Engaged” position
6
(4) PTO clutch lever “Engaged” position and rear and Mid PTO “Engaged” position
7
1 - SPECIFICATION & STRUCTURE
14
5. OIL FLOW
1) Oil flow schematic
8
Oil pump
Power steering control valve
3P valve
HST
Oil filter
Oil filter
Plug (For remote control valve)
Power steering cylinder
Remote valve (option)
Relief valve
Safety valve
3P cylinder
1 - SPECIFICATION & STRUCTURE
15
2) Power steering
(1) Neutral position
9
1. Sleeve
2. Spool
3. Relief Valve
4. Reservoir
5. Hydraulic Pump
6. Cylinder
7. Check Valve Assy.
8. Gerotor Gear Pump
POWER STEERING OPERATION
Fluid Flow - Neutral Position
Pressurized hydraulic fluid from the hydraulic pump, 5,
enters the valve body at port "P". The fluid flows
through the check valve, 7, past the relief valve, 3, and
through radial holes in the sleeve to the center of the
valve spool. Passage to ports "L" and "R", leading to
the cylinder, 6, are blocked by the spool, 2, and sleeve,
1. Fluid contained in the tubes and cylinder is trapped
and the cylinder remains in a fixed position. In this
position, the front wheels hold at a same position.
Because the system is fully hydraulic, there is no road
feel or front wheel reaction transmitted to the steering
wheel.
NOTE : There are radial holes in the sleeve, 1, that
index with grooves provided in the spool, 2.
In the neutral position, the fluid flows through the
hollow spool and returns to the HST system (to the
reservoir) via port "T".
1 - SPECIFICATION & STRUCTURE
16
(2) Left turn
10
1. Sleeve
2. Spool
3. Relief Valve
4. Reservoir
5. Hydraulic Pump
6. Cylinder
7. Check Valve
8. Gerotor Gear Pump front
Fluid Flow - Left Turn
Turning the steering wheel to the left rotates the valve
spool, 2, and indexes grooves in the spool with holes in
the sleeve, This allows fluid flow to enter passages "F",
"E", and "D" in the control valve gerotor pump,
Because the gerotor pump is turning counterclockwise,
the fluid flows through passages "C", "B", and "A", to
port "L" and on to the power steering cylinder. Fluid
enters the left side barrel of the cylinder and causes the
wheels to turn left. Fluid contained in the cylinder right
side returns to the control valve through port "R" and is
directed back across the sleeve and spool to the
reservoir through port "T".
1 - SPECIFICATION & STRUCTURE
17
(3) Right turn
11
1. Sleeve
2. Spool
3. Relief Valve
4. Reservoir
5. Hydraulic Pump
6. Cylinder
7. Check Valve Ass’y.
8. Gerotor Gear Pump
Fluid Flow - Right Turn
Turning the steering wheel to the right rotates the valve
spool, 2, and indexes the grooves in the spool with
holes in the sleeve, 1, allowing hydraulic fluid flow to
enter passages "A", "B", and "C" in the control valve
gerotor pump, Because the gerotor pump is turning
clockwise, the fluid flows through passages "D", "E",
and "F", to port "R" on to the power steering cylinder.
Fluid enters the right side barrel of the cylinder and
causes the front wheels to turn right.
Fluid contained in the cylinder left side returns to the
control valve through port "L" and is directed back to
the reservoir through port "T".
1 - SPECIFICATION & STRUCTURE
18
(4) Emergency
12
1. Sleeve
2. Spool
3. Relief Valve
4. Reservoir
5. Hydraulic Pump
6. Cylinder
7. Check Valve Ass’y
8. Gerotor Gear Pump
MANUAL OPERATION
In the event of power steering pump failure or engine
shut down, the steering system can be operated
manually.
Turning the steering wheel drives the gerotor pump, 8,
in the control valve assembly to force fluid to the power
steering cylinder, 6, according to the direction that the
steering wheel is being turned.
Fluid from the opposite side of the cylinder returns to
the control valve. A check valve, 7, is located in the
connecting passage between ports "T" and "P". It
unseats, allowing the fluid and any reservoir fluid that
may be required, to flow through the check valve and
connecting passage to the "P" port passage. It supplies
the fluid required for the pressure side of the system. A
right turn is depicted in the figure.
1 - SPECIFICATION & STRUCTURE
19
3) Hydraulic power lift system
(1) Neutral position
Neutral Position
13
1. Control Valve Spool
2. Flow Priority Valve
3. Lift Check Valve
4. Check Valve
5. Drop Rate Control Valve
6. Hydraulic Pump
7. Relief Valve
8. Hydraulic Cylinder
9. Sump
10. Safety Valve
OIL FLOW- NEUTRAL POSITION
In the "neutral" position, the control valve spool, 1, is
centered in the valve body. Pressurized oil from the
hydraulic pump, 6, is directed into the valve body and
separated by the flow priority valve, 2. The priority flow
7 liter/min is directed out the 'Pr' port to the power
steering and HST circuits. The remaining oil flow is
directed to the control valve spool. Since the spool is
centered, and is blocking all of the valve's working ports
in this position, the remaining oil flow is directed around
the spool to the tank ('T1 ') port to return to the reservoir.
Oil trapped in the hydraulic cylinder, 8, under the load
exerted by the implement on the lift arms, enters the valve
body at the 'A2' port and exerts pressure on the cylinder
side of the check valve, 3, holding the check valve closed.
The safety valve, 10, retains the oil in the hydraulic
cylinder line, maintaining the implement in a fixed
position.
/