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TM 10-3930-643-34
BRAKE TROUBLESHOOTING AND MAINTENANCE. (cont)
8-12.
Treadle Valve (S/N 2000 and below). (Sheet 2 of 7)
DISASSEMBLY
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Using a flat brass punch, depress
piston (7) to compress spring (2).
Remove retainer (l).
Remove items 2 thru 7 as an assembly
from body (17).
Remove spring (2) from piston (7).
Remove and discard preformed packing
(3) from piston (7).
Using a flat brass punch, depress
retainer (5) in piston (7).
Using snap ring pliers, remove ring
(4).
Remove retainer (5) and spring (6)
from piston (7).
NOTE
Use scribe or punch to aid in
assembly.
Matchmark body (17), cover (18) and
body (33).
Using a 9/16” socket and socket
wrench handle, remove four bolts (8)
and lock washers (9).
Using a
flat tip
screwdriver,
separate body (17) and cover (18).
Go to sheet 3
8-48
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