TM 5-3805-255-14
0016
Table 12. Hydraulic Main Control Valve Troubleshooting Procedures for the H100C Loader.
016
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check for fittings too tight.
Clean or replace valve. If problem still
1. Difficult Operation or
exists, go to step 2.
Sticking of Control Valve
Plungers.
2. Check for binding linkage.
Clean, adjust, or replace linkage. If
problem still exists, notify Sustainment
Maintenance.
Check for leaking valve plunger.
Replace main control valve
2. Load Will Not Hold.
(WP 0078). If problem still exists,
notify Sustainment Maintenance.
Check for scored plunger.
Replace main control valve
3. Leaking Seals.
(WP 0078). If problem still exists,
notify Sustainment Maintenance.
Table 13. Hydraulic Pump Troubleshooting Procedures for the H100C Loader.
016
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check for sheared or disengaged
Replace hydraulic pump (WP 0077). If
1. Pump Does Not Deliver
shaft.
problem still exists, go to step 2.
Fluid.
2. Check for restrictions in lines.
Clean, repair or replace lines. If
problem still exists, go to step 3.
3. Check hydraulic oil.
Add correct amount and type of oil
(WP 0018). If problem still exists,
notify Sustainment Maintenance.
1. Check hydraulic oil level.
Add correct amount and type of oil
2. Pump Making Noise.
(WP 0018). If problem still exists, go
to step 2.
2. Check for foaming oil.
Drain and add correct amount and
type of fluid (WP 0018). If problem still
exists, go to step 3.
3. Check for vortex or spiral in oil
Check installation and condition of
filter/screens (WP 0018). If problem
circulating in reservoir.
still exists, go to step 4.
4. Check for sheared or disengaged
Replace hydraulic pump (WP 0077). If
shaft.
problem still exists, notify Sustainment
Maintenance.
