TM 5-3805-248-23-1
STEERING/HYDRAULIC SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
0015 00
Table 2. Hydraulic System Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
Irregular Apron, Ejector
and/or Bowl Movement
(Not Smooth).
WARNING
Do NOT remove hydraulic tank filler cap or disconnect or remove any hydrau-
lic system line or fitting unless hydraulic system pressure has been relieved.
Hydraulic system pressure can be over 2,500 psi (17,237 kPa), even with engine
and pump OFF. To relieve pressure, lower all hydraulic attachments to the
ground and shut down engine. Move control levers through all operating posi-
tions, then SLOWLY loosen hydraulic tank filler cap. After maintenance,
tighten all connections before applying pressure. Escaping hydraulic fluid under
pressure can penetrate the skin, causing injury or death.
At operating temperature, hydraulic oil is hot. Allow hydraulic oil to cool before
disconnecting any hydraulics. Failure to do so may cause injury.
Hydraulic oil is slippery and can cause falls. To avoid injury, wipe up spilled oil
with rags.
1.
Check ejector and guide rollers for
1. If damaged, replace rollers (WP 0328 00
damage.
through WP 0331 00).
2. If rollers are OK, go to Test 2.
2.
Check all hydraulic lines and fittings
1. If damaged, replace lines and fittings
for leaks, kinks or other damage.
2. If lines and fittings are OK, go to Test 3.
3.
Check for leaks at ejector, bowl and
1. If damaged, replace hydraulic
apron cylinders.
cylinder(s) (WP 0242 00 through WP
2. If cylinder(s) are OK, go to Test 4.
4.
Check for leaks in hydraulic suction
1. If damaged, replace hose(s) (WP 0233
hoses causing aeration of hydraulic
oil.
2. If hoses are OK, go to Test 5.
5.
Check control linkages for free
1. If required, adjust linkages to achieve
movement and full travel of control
full travel of scraper control valve
valve spools.
spools (WP 0325 00).
2. If linkage is binding or damaged,
replace (WP 0325 00).
3. If problem still exists, go to Test 6.
6.
Perform hydraulic system flow meter
1. Correct as indicated in WP 0321 00.
tee tests (WP 0321 00).
2. If problem still exists, replace hydraulic
implement pump (WP 0322 00).
