TM 55-1680-320-23&P
3-42. AUTOMATIC BRAKE ASSY - REPAIR (cont)
3-42
4.
5.
Repair. Repair of parts is limited to removal of minor nicks, burrs, scratches or other surface damage using aluminum
oxide cloth or fine abrasive. Clean part thoroughly after repair. If damage is extensive, or if minor repair will affect
serviceability, replace the part.
Reassembly.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
Lubricate ball bearing (15) with grease and install onto automatic brake shaft (4).
Soak friction discs (13) in transmission fluid for 10 minutes.
Install dowel pins (11) onto gear cam seat (5). Pin height shall he 0.130-0.140 in. (0.330-0356 cm).
Place automatic brake shaft (4) into Automatic Brake Torque Fixture.
Do not inter-mix 42277D176 friction discs and alternate 42325-255 friction discs in
automatic load brake assembly.
Install two friction discs (13), two brake discs (12) and shim (14) onto shaft (4).
Install belleville springs (7,8) and pressure plate (9) onto gear cam seat (5).
Install gear cam seat (5) and remaining friction discs (13) and brake discs (12) onto automatic brake shaft (4). Align
brake disc tangs.
NOTE
Ensure roller of cage assembly (6) rolls freely.
Install key (10), roller cage assembly (6) and gear cam seat (5) onto shaft (4) ensuring alignment marks match.
Install washer (3) and castellated nut (2).
Perform adjustment Task 3-41 prior to installing cotter pin (1).
FOLLOW-ON MAINTENANCE:
Adjust automatic brake assembly
(Task 3-41)
Install automatic brake assembly
(Task 3-43)
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Change 6
