HYDRAULIC OIL FOAMS

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

3. CYLINDER MOVEMENT IS SLOW

Go to Hydraulic System Malfjunction 1: Hydraulic System Does Not Work (page 2-114).

4. HYDRAULIC OIL FOAMS

Check clutch control valve-to-hydraulic pump inlet oil line (1) for loose connections and damage.

a. If clutch control valve-to-hydraulic pump inlet oil line (1) is loose or damaged, tighten or replace

parts as outlined in clutch control valve-to-hydraulic pump inlet oil line (page 2-1352) and

hydraulic oil filter relief valve-to-clutch control valve adapter oil line (page 2-1346).

b. If clutch control valve-to-hydraulic pump inlet oil line (1) is properly connected and not damaged,

notify Direct Support Maintenance.

5. LOADER CONTROLVALVE HANDLE STICKS OR BINDS

Check loader control valve handle and linkage adjustment (page 2-1324).

a. If loader control valve handle and linkage is properly adjusted without sticking or binding, replace

loader control valve (page 2-1285).

b. If loader control valve handle and linkage is sticking or binding, adjust or replace defective parts

as needed (page 2-1324).

6. BACKHOE CONTROL VALVE LEVERS STICK OR BIND

Check backhoe control valve levers and linkage by doing the following: Using long roundnose pliers straighten

ends of cotter pins (2) and take them out of pins (3) securing linkage in question. Take pins (3) out of spool

devises (4) and connector links (5). Check linkage for sticking or binding.

a. If backhoe control valve levers and linkage are not sticking or binding, replace backhoe control

valve (page 2-1260).

b. If backhoe control valve levers and linkage are sticking or binding, replace defective parts as

needed (Serial Numbers 235786 thru 235999 only, page 2-1302; Serial Numbers 319995 thru

342573 only, page 2-1314).

2-116