Kubota WSM STa-30, Workshop Manual

Page: 209 / 359

5-S4
ST
α
-30 · ST
α
-35, WSM BRAKES
[2] DISASSEMBLING AND ASSEMBLING
Removing Brake Pedal
1. Refer to “DISASSEMBLING AND ASSEMBLING” section of 3.
TRANSMISSION.
W1011417
Separating Brake (Rear Axle)
1. Refer to “DISASSEMBLING AND ASSEMBLING” section of 3.
TRANSMISSION.
W1011463
Brake Discs and Friction Plate
1. Draw out the brake shaft (3).
2. Detach the brake disc (7), cam plate (6) and balls (4).
3. Draw out the brake cam (1).
4. Detach the brake discs (7) and friction plate (5).
(When reassembling)
• Apply grease to the O-ring (2).
• Be sure to fix the brake cam and cam plate.
• Place the brake discs (7) so that the hole “A” of the second disc
should be overlapped 50 % or more.
W1011508
[3] SERVICING
Height of Brake Cam Plate and Ball
1. Measure the dimensions of the brake cam plate with the ball
installed.
2. If the measurement is less than the allowable limit, replace the
cam plate and balls.
3. Inspect the ball holes of cam plate for uneven wear. If the uneven
wear is found, replace it.
W1011741
Cam Plate Flatness
1. Place the cam plate on the surface plate.
2. Use a feeler gauge of 0.3 mm (0.012 in.) thick for judgment of the
cam plate flatness. Measure the flatness diagonally at more than
four locations.
3. If the measurement is above the allowable limit, replace it.
W1011852
(1) Brake Cam
(2) O-ring
(3) Brake Shaft
(4) Ball
(5) Friction Plate (6) Cam Plate
(7) Brake Disc
A : Hole
Height of brake cam
plate and ball
Factory spec.
20.995 to 21.005 mm
0.82657 to 0.82697 in.
Allowable limit
20.5 mm
0.81 in.
Cam plate flatness Allowable limit
0.3 mm
0.012 in.
KiSC issued 11, 2006 A