3-12. AIR BRAKE SYSTEM MAINTENANCE (CONT)
f. Air Compressor Governor. This task covers disassembly, cleaning, inspection,
and reassembly of air compressor governor.
TOOLS: No. 1 Common Organizational Maintenance Tool Kit
Drill, 1/2 inch capacity
Drill bit, 1/8 inch diameter
Fixed open end wrench set
Socket head screw key set
Automotive Mechanics Tool Kit
Drive pin punch, 1/8 inch point
Machinists steel rule
MATERIALS/PARTS: Clean cloths (Appendix C, item 1)
Cleaning solvent P-D-680 (Appendix C, item 2)
Governor kit (FSCM 10988 PN N8783)
REFERENCE: TM 5-3805-262-20
PRELIMINARY PROCEDURE: Air compressor governor removed (refer to TM
DISASSEMBLY (SHEET 1 OF 2)
Put governor in vise with ad-
justing screw (4) up. Measure
distance from top of adjusting
screw (4) to top of nut (3).
Record measurement to aid re-
Loosen nut (3).
Using 1/8 inch drill bit,
drill hole through plug
(l). Using 1/8 inch point
drive pin punch inserted
through drilled hole, pry
plug out and discard.
Remove setscrew (2) using socket head screw key.
Remove nut (3) and adjusting screw (4).
Loosen housing (5); turn housing (5) counterclockwise and count number
of turns to remove. Record number of turns to aid reassembly.