TM 5-3805-262-20
7-3. AIR BRAKE SYSTEM MAINTENANCE (CONT)
f. H o s e s , L i n e s , a n d F i t t i n g s.
(1) Inspection.
This task covers inspection of air brake system hoses, lines,
a n d f i t t i n g s.
TOOLS: No. 1 Common Organizational Maintenance Tool Kit
Fixed open end wrench set
MATERIALS/PARTS: Clean cloths (Appendix C, item 1)
Detergent (Appendix C, item 3)
NOTE
PRELIMINARY PROCEDURE: Front access door unlocked and opened and engine
side panels removed (page 9-14).
INSPECTION (SHEET 1 OF 2)
I n f o l l o w i n g s t e p s , o p e n a i r r e s e r v o i r d r a i n v a l v e t o r e l i e v e a l l a ir
pressure before disconnecting hoses
o r t u b e s . F a i l u r e t o d o s o c o u ld
cause serious injury.
(a) Check that elbows and tee installed in parking brake valve are tight. If
necessary, disconnect hose (1) or tube (2), tighten elbow or tee and re-
connect hose or tube.
(b) In cab, beneath right-hand instrument panel at parking brake valve,
check that hose (1) and tube (2) connections to fittings are tight.
(c) Check hose (1) and tube (2) for cracks,
s p l i t s , c h a f i n g , o r d e t e r i o r a -
tion. If any of these conditions are seen, replace hose or tube (page
7-74).
(d) At front of loader, above hydraulic reservoir, at declutch treadle and
v a l v e , c h e c k t h a t f i t t i n g s , e l b o w s, and pilot valve (8) are tight and
not loose. If necessary, disconnect hose (1, 3, 4, 6, or 7) or tube (2
or 5), tighten fitting, elbow, or pilot valve, and reconnect hose or
t u b e .
(e) Check that hose (1, 3, 4, 6, and 7) and tube (2 and 5) connections at
declutch treadle and valve are tight and not loose.
(f) Check hoses (1, 3, 4, 6, and 7) and tubes (2 and 5) for cracks, splits,
c h a f i n g , o r d e t e r i o r a t i o n . If any of these conditions are seen, replace
hose or tube (page 7-74).
(g) Check that plugs installed in declutch treadle and valve body are tight
and not loose or missing. If plugs are missing, refer to page 7-82 to
i n s t a l l .
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