HYDRAULIC OIL FOAMY (FRONT LOADER/FORKLIFT, BACKHOE/CRANE, AND HYDRAULIC TOOLS OPERATE ERRATICALLY)

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

HYDRAULIC SYSTEM (CONT)

Step 3.

Check for loose and damaged hydraulic pump lines.

If hydraulic pump lines are loose or damaged, tighten loose

connections or replace hydraulic pump lines (pages 4-584,

4-590). If problem continues, notify direct support maintenance.

If hydraulic pump lines are not loose or damaged, replace hydraulic

tank filter (pages 4-709, 4-720).

99.

HYDRAULIC OIL FOAMY (FRONT LOADER/FORKLIFT, BACKHOE/CRANE, AND HYDRAULIC

TOOLS OPERATE ERRATICALLY).

Step 1.

Check for low oil level in front or rear hydraulic tank.

If oil level is low, add oil (TM 5-2420-224-10).

If oil level is not low, go to step 2.

Step 2.

Check for water in hydraulic oil.

If there is water in hydraulic oil, replace hydraulic oil

(TM 5-2420-224-10) and make sure fill caps are tight.

If there is no water in hydraulic oil, go to step 3.

Step 3.

Check for loose or damaged hydraulic pump lines.

If hydraulic pump lines are not loose or damaged, replace front

or rear hydraulic tank filter (pages 4-709, 4-720).

If hydraulic pump lines are loose or damaged, tighten loose

connections or replace hydraulic pump lines (pages 4-584,

4-590). If problem continues, notify direct support maintenance.

100. HYDRAULIC OIL OVERHEATS.

Step 1.

Check for low oil level in front or rear hydraulic tank.

If oil level is low, add oil (TM 5-2420-224-10).

If oil level is not low, go to step 2.

Step 2.

Check fan shroud for debris that could block air flow.

If there is debris in fan shroud, remove debris.

If there is no debris in fan shroud, perform Malfunction 74.

Change 2

3-283