Servicing - wsm L503 Workshop Manual

L3130 · L3430 · L3830 · L4630 · L5030, WSM

(3) Servicing

(A) Bearing, Gear and Shaft
See page 3-S43.
(B) PTO Clutch
See page 3-S45.
(C) Differential Gears
See page 3-S46 to 3-S48.
(D) HST
Charge Pump
1. Check the charge pump housing and the rotor (1), (2) for
scratches and wear.
2. If scratch or worn, replace the charge pump complete assembly.
(1) Inner Rotor
(2) Outer Rotor
Pump Shaft and Motor Shaft
1. Check the seal surface (4) and the bearing surface (3).
2. If the shaft is rough or groove, replace it.
(1) Motor Shaft
(2) Pump Shaft
Cylinder Block Bore and Pistons
1. Lift the pistons gently with the retainer plate (1).
2. Check the pistons for their free movement in the cylinder block
bores.
3. If the piston or the cylinder block bore is scored, replace cylinder
block assembly.
IMPORTANT
• Do not interchange pistons between pump and motor
cylinder block.
(1) Retainer Plate
(2) Piston
Piston Slipper
1. Check the slipper (1) for flatness.
2. If rounded, replace.
3. Measure the thickness of piston slipper.
4. If the measurement is less than the allowable limit, replace.
5. Check the lubricant hole (2) for clogging.
IMPORTANT
• Do not interchange pistons between pump and motor
cylinder block.
(1) Piston Slipper
3-S115
TRANSMISSION
(3) Pump Cover
W1025956
(3) Bearing Surface
(4) Seal Surface
W1026037
(3) Cylinder Block
W1026142
(2) Lubricant Hole
W1026561
KiSC issued 02, 2007 A