wsm L3301 Workshop Manual page 413

L3301, L3901, L4701, WSM
[B] HST Model
Checking Contact between Coupling and Shifter
1. Check to see if there is flaw or wear on the spline of the coupling
and shifter, and the ley groove on the coupling.
2. Engage the shifter with the coupling, and check that they slide
smoothly.
3. Similarly, check that there is any flaw or wear on the gear
splines.
4. If there is any problem, replace them.
Flaw on synchronizer Key and Spring
1. Check the projection in the center of the synchronizer key for
wear.
2. Check the spring for fatigue or wear on the area where the
spring contacts with the keys.
3. If there is any problem, replace them.
Pump Shaft and Motor Shaft
1. Check the oil seal surface (3).
2. If the pump shaft (1) and motor shaft (2) are rough or groove,
replace them.
(1) Pump Shaft
(2) Motor 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.
4. Check the slipper (4) for flatness.
5. If rounded, replace.
IMPORTANT
• Do not interchange pistons between pump and motor
cylinder block.
(1) Retainer Plate
(2) Piston
Cylinder Block Face
1. Check the polished face (1) of cylinder block for scoring.
2. If scored, replace cylinder block assembly.
3. Check the spring (2) for breakage.
4. If broken, replace cylinder block assembly.
(1) Polished Face
3-S101
TRANSMISSION
9Y1211012TRS0133US0
9Y1211012TRS0134US0
(3) Oil Seal Surface
9Y1211012TRS0135US0
(3) Cylinder Block
(4) Piston Slipper
9Y1211012TRS0136US0
(2) Spring
9Y1211012TRS0137US0
KiSC issued 09, 2016 A