TM 9-2320-363-34-1
Table 2-1. Troubleshooting (Cont)
Malfunction
Test or lnspection
Corrective Action
HYDRAULIC WINCH (M916A1 AND M916A2 (CONT)
Check pressure relief valve setting. Install pressure gage with capacity of 3000 psi
(20695 kPa) in brake pilot line and plug port S1 in counterbalance manifold. Apply
hydraulic power, run engine at 1000 rpm, and observe pressure on gage.
CAUTION
T o p r e v e n t d a m a g e t o
equipment, do not try to
a d j u s t c o u n t e r b a l a n c e
v a l v e . I t i s a s e a l e d
non-adjustable unit.
l If pressure is less than 2500 ±50 psi (17250 ±345 kPa),
replace relief valve on control valve (page 23-22).
l If pressure is normal, replace hydraulic motor (page 11-15).
4. DOES NOT HOLD LINE IN NEUTRAL.
Step 1. Check for damaged packings.
l Replace damaged packings (pages 23-9, 23-12).
Step 2. Check for damaged or broken brake springs.
l Repair winch brake (page 23-34).
Step 3. Check for damaged or worn friction plates.
l Repair winch brake (page 23-34).
5. BRAKE WILL NOT RELEASE.
Step 1. Check for leaking packings and connections.
l Replace leaking motor packings (page 23-9) pump packings
(page 23-12) and tighten loose connections. If problem still
exists, go to step 2.
Change 1
2-25