Second Brake Assembly (B-2)

Second Brake Assembly (B-2)





Disassembled View

Disassembly





1. Remove second brake assembly from output shaft.
2. Remove the thrust washer (plastic).





3. Place special tool on the spring retainer, and compress the return spring.
Spring compressor: J-25048
Remove the snap ring with snap ring pliers.
4. Remove the spring retainer and piston return spring.
5. Remove piston sleeve.





6. Holding the second brake piston by hand, apply compressed air to the second brake drum to remove the second brake piston.
Remove the second brake piston from the second brake drum.
7. Remove the wrings from the second brake piston.

Inspection and Repair





1. Check piston return spring.
Using calipers, measure the free length of the return spring.
Standard length: 18.38 mm (0.724 inch)

Reassembly





1. Coat new O-rings with ATF and install them on the second brake piston.
2. Being careful not to damage the O-rings, press in the second brake piston into the second brake drum.
3. Install piston sleeve.





4. Install piston return spring.
5. Install spring retainer.





6. Place special tool on the spring retainer, and compress the return spring.
Spring compressor: J-25048
Install the snap ring with snap ring pliers.
Be sure the end gap of the snap ring is not aligned with the spring retainer claw.





7. Check second brake piston movement.
Make sure the second brake piston moves smoothly when applying and releasing the low compressed air to the second brake drum.





8. Coat the thrust washer (plastic) with petroleum jelly and install it to the second brake piston, with the grooved side facing upward.

NOTE: Make sure that the cutout portions of the thrust washer match the teeth at the spring retainer.





9. Install second brake assembly to output shaft.