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BRAKE TROUBLESHOOTING AND MAINTENANCE.
8-10.
Treadle, Treadle Valve and Check
of 8)
REMOVAL
9.
10.
11.
12.
13.
14.
15.
16.
17.
NOTE
Steps 9 thru 13 apply to
of service brake treadle
only.
Using 5/8” and 9/16”
wrenches, remove elbow
valve (28) and reducer
TM 10-3930-643-20
Valves (S/N 2000 and below). (Sheet 4
removal
valve
open
end
(27), two-way
( 2 9 ) f r om
service brake treadle valve (26).
Using an 11/16” box end wrench,
remove connector (30).
Using 1-3/8” and 11/16” open end
wrenches, remove check valve (31),
connector (32) and tee (33).
Using a 9/16” open end wrench,
remove elbow (34).
Using an 11/16” socket and socket
wrench handle, remove plugs (35, 36
and 37).
NOTE
Steps 14 thru 17 apply to removal
of transmission disconnect
and
service brake treadle valve only.
Using 5/8”, 11/16” and 1-3/8” open
end wrenches and an 11/16” box end
wrench, remove elbow (38),
two-way
valve (39) and reducer (40) from
service brake treadle valve (26).
Using an 11/16” b o x e n d w r e n c h,
remove plugs (41 and 42).
Remove connector (43).
Using a 5/8” open end wrench, remove
tees (44 and 45) and connector (46).
Go to sheet 5
8-45
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