Paccar Winch BRADEN BA3A, Installation Maintenance And Service Manual

22

WINCH DISASSEMBLY

Use the following procedure to disassemble the winch.  

1.

Remove the wire rope from the winch drum and align
the drain hole in the drum with a hole in the support
side plate before removing the air hoses and mount-
ing bolts. After the winch is removed from its mount-
ing, thoroughly clean the outside surfaces. To drain
the oil, install a short piece of 1 inch pipe in the larg-
er threads of the drain hole

2.

Use a 5/16 inch Allen wrench to remove the drain
plug through the pipe and drain the oil from the winch.

3.

Begin disassembly by standing the winch on the
bearing support end.  Place a 2x4 under the side
plate on the bearing support end to keep the winch
level. 

4. Remove the air hoses that connect the air motor to

the brake cylinder.  Remove the manual air valve from
the motor by removing the 4 bolts.

5.

Remove the capscrews (34) securing the motor to the
motor adapter.  Lift the motor off the winch using
either an eye-bolt and pipe fitting in the motor exhaust
port (ensure full engagement of pipe threads), or
remove bolts from the motor and replace with eye-
bolts. 

6.

Remove the input shaft (214). Remove the retaining
ring (208), and then the bearing carrier (231) and
overrunning clutch assembly (100).  

7.

The force of the brake springs is applied to the motor
adapter, so the bolts (220) must be loosened 1 turn at
a time alternating across until the springs are no
longer compressed.  Remove the motor adapter
(212).

8.

Remove the brake internal parts – piston, discs, pres-
sure plate, pins, springs, and spring separator.
Remove the primary sun gear (7).

9.

Remove bolts (219) which attach the brake cylinder to
the motor side plate and remove brake cylinder.

10. Slowly remove the closure using eyebolts (3/8” - 16)

in tapped holes.  Use care when removing closure -
there is little clearance between the closure and side
plate.  

11. Remove thrust washer (5), and the primary planet

gear set.  Remove thrust washer (8), output sun gear
(6) and output planet gear set.  See procedure on pg.
24 for planet gear disassembly.

12. Remove bearing support shaft (13).

13. Remove the rope guard and guard brackets.

Remove the band brake.

14. Remove the motor end side plate.

15. Remove the drum.

16. Set on base angles and then remove the bearing sup-

port.  Remove the support end side plate.

Refer to Sub-Assembly procedures for further disassem-
bly.

The winch and motor can weigh up to 2000 lbs.
depending on the winch model. Ensure lifting equip-
ment and overhead hoist are rated for the winch
weight and are in good working condition. Improper
rigging or hoist capacity may result in death or person-
al injury.