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Page Title:
Table 18. Hydraulic System Troubleshooting Procedures. |
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 TM 10-3930-660-24-1
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 18. Hydraulic System Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Inspect valve(s) for
Remove and disassemble
1.
MLRS Attachment or Main Control Valves
Not Seating.
valve(s) (WP 0303 00 and WP
0304 00).
1. Inspect seals.
Disassemble valve(s) and
2.
Leakage Found Between Sections of MLRS
Attachment or Main Control Valves.
replace seals (WP 0303 00 and
WP 0304 00).
2. Check torque of tie rods on
Torque tie rods (WP 0303 00 and
MLRS and main control
WP 0304 00).
valves.
Check movement of spools.
Repair valve(s) (WP 0303 00
3.
Spools Binding in MLRS Attachment or
Main Control Valves.
and WP 0304 00).
Check to see that spools are
Repair valve(s) (WP 0303 00
4.
Excessive Pressure in MLRS Attachment or
Main Control Valves During Neutral
centered.
and WP 0304 00).
Position.
1. Check valve for warpage
Repair valve(s) (WP 0303 00
5.
Sticking Plungers of MLRS Attachment or
from mounting.
Main Control Valves.
and WP 0304 00).
2. Check plunger for bends.
Repair valve(s) (WP 0303 00
and WP 0304 00).
3. Check return spring for
Repair valve(s) (WP 0303 00
damage.
and WP 0304 00).
4. Check spring or detent cap
Loosen cap, center and tighten
for binding.
parts (WP 0303 00 and WP 0304
00).
5. Check valve for
Clean or repair valve (WP 0303
00 and WP 0304 00).
6. Check plunger cap for oil.
Replace seals (WP 0303 00 and
WP 0304 00).
1. Check for paint or dirt on or
Replace seals (WP 0303 00 and
6.
Leaking Seals of MLRS Attachment or Main
under seals.
Control Valves.
WP 0304 00).
2. Check for scored plunger.
Repair valve (WP 0303 00 and
WP 0304).
3. Check for loose seal plates.
Repair valve (WP 0303 00 and
WP 0304 00).
4. Check for seal damage.
Repair valve (WP 0303 00 and
WP 0304 00).
1. Check detent cam for wear.
Repair valve (WP 0303 00 and
7.
Detent Control Fails to Hold Inside MLRS
Attachment or Main Control Valves.
WP 0304 00).
2. Check spring or ball for
Repair valve (WP 0303 00 and
damage or defects.
WP 0304 00).
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