3-S104
L3130 · L3430 · L3830 · L4630 · L5030, WSM
TRANSMISSION
Servo Piston Assembly
1. Remove the servo piston under cover (1).
2. Remove the servo piston assembly mounting hex. head screw.
3. Push the piston from bottom side slightly and pull out the servo
piston assembly (2).
(When reassembling)
NOTE
■
• Take care not to do damage the surface of servo piston.
• Do not disassemble the servo piston assembly, since it has
been factory-adjusted.
W1019685
1) Checking and Adjusting HST Neutral Position
CAUTION
• Park the tractor on a flat place and keep all the levers at
neutral position.
• Jack up the engine tractor and bring it in the 2WD mode.
1. Fit the HST mechanism first and then exterior components until
the engine can get started.
2. Remove the hex. socket head plug from F and R ports.
3. Assemble adaptor 58 (07916-52391) and thread joint (07916-
50341) with the gasket between them.
4. Install the assembled adaptor 58 and thread joint F and R ports.
5. Measure the low and high HST charge pressures. Place 5 MPa
(50 kgf/cm
2
, 725 psi) gauges on the two spots in the photo.
6. Lift the entire steps, as shown below, so that the piston can be
adjusted.
7. If any of the servo piston parts has been replaced, readjust the
HST neutral position, referring to the dimension A of the servo
piston adjusting screw (1).
8. Start the engine and measure the low and high charge pressures.
Now adjust the piston neutral position so that the low-side
pressure and the high-side one be the same. (Take the
measurement with the engine rpm at MAX.) Move the servo
valve lever (2) and watch the tires’ movement to ensure the
neutral positioning.
9. Finally lock the piston adjusting nut and fit the exterior
components.
(Reference)
• Dimension A : 26.3 mm (1.04 in.)
W1299424
Tightening torque
Servo piston and cover
mounting hex. head screw
28 to 35 N·m
2.9 to 3.6 kgf·m
21 to 26 ft-lbs
(1) Servo Piston Under Cover
(2) Servo Piston Assembly
Charge pressure (Oil
temperature 50 to 60 °C
(122 to 140 °F))
Factory spec.
2.26 to 2.45 MPa
23 to 25 kgf/cm
2
327 to 355 psi
(1) Adjusting Screw
(2) Servo Valve Lever
F : Forward Side
R : Reverse Side
KiSC issued 02, 2007 A
Summary of Contents for L3130
Page 1: ...WORKSHOP MANUAL TRACTOR L3130 L3430 L3830 L4630 L5030 KiSC issued 02 2007 A ...
Page 7: ...5 L3130 L3430 L3830 L4630 L5030 WSM SAFETY INSTRUCTIONS KiSC issued 02 2007 A ...
Page 8: ...6 L3130 L3430 L3830 L4630 L5030 WSM SAFETY INSTRUCTIONS KiSC issued 02 2007 A ...
Page 9: ...7 L3130 L3430 L3830 L4630 L5030 WSM SAFETY INSTRUCTIONS KiSC issued 02 2007 A ...
Page 18: ...16 L3130 L3430 L3830 L4630 L5030 WSM DIMENSIONS L4630 L5030 KiSC issued 02 2007 A ...
Page 19: ...G GENERAL KiSC issued 02 2007 A ...
Page 81: ...1 ENGINE KiSC issued 02 2007 A ...
Page 153: ...2 CLUTCH KiSC issued 02 2007 A ...
Page 154: ...CONTENTS MECHANISM 1 FEATURE 2 M1 KiSC issued 02 2007 A ...
Page 173: ...3 TRANSMISSION KiSC issued 02 2007 A ...
Page 224: ...3 S7 L3130 L3430 L3830 L4630 L5030 WSM TRANSMISSION KiSC issued 02 2007 A ...
Page 225: ...3 S8 L3130 L3430 L3830 L4630 L5030 WSM TRANSMISSION 3 HST SYSTEM KiSC issued 02 2007 A ...
Page 226: ...3 S9 L3130 L3430 L3830 L4630 L5030 WSM TRANSMISSION KiSC issued 02 2007 A ...
Page 335: ...4 REAR AXLE KiSC issued 02 2007 A ...
Page 336: ...CONTENTS MECHANISM 1 STRUCTURE 4 M1 KiSC issued 02 2007 A ...
Page 346: ...5 BRAKES KiSC issued 02 2007 A ...
Page 347: ...CONTENTS MECHANISM 1 LINKAGE 5 M1 2 OPERATION 5 M2 KiSC issued 02 2007 A ...
Page 362: ...6 FRONT AXLE KiSC issued 02 2007 A ...
Page 363: ...CONTENTS MECHANISM 1 STRUCTURE 6 M1 KiSC issued 02 2007 A ...
Page 387: ...7 STEERING KiSC issued 02 2007 A ...
Page 414: ...8 HYDRAULIC SYSTEM KiSC issued 02 2007 A ...
Page 463: ...9 ELECTRICAL SYSTEM KiSC issued 02 2007 A ...
Page 556: ...10 CABIN KiSC issued 02 2007 A ...
Page 570: ...10 S4 L3130 L3430 L3830 L4630 L5030 WSM CABIN KiSC issued 02 2007 A ...