ONE BACKHOE SWING CYLINDER DOES NOT WORK

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

19. ONE BACKHOE SWING CYLINDER DOES NOT WORK

Check backhoe control valve-to-backhoe swing cylinder oil lines (1 and 2) or (3 and 4) for sharp bends, dents, or

kinks.

a. If backhoe control valve-to-backhoe swing cylinder oil lines (1 and 2) or (3 and 4) are not bent,

dented, or kinked, replace backhoe swing cylinder (page 2-1708).

b. If backhoe control valve-to-backhoe swing cylinder oil line (1, 2, 3, or 4) has a sharp bend, dent,

or kink, replace (page 2-1636).

20. BOTH BACKHOE SWING CYLINDERS DO NOTWORK

Check other backhoe functions for proper operation (TM 5-2420-222-10).

a. If other backhoe functions operate properly, replace backhoe control valve (page 2-1260).

b. If other backhoe functions do not operate, go to hydraulic system malfunction 23: All Backhoe

Cylinders Do Not Work (page 2-130).

21. ONE BACKHOE STABILIZER CYLINDER DOES NOT WORK

Step 1.

Check backhoe control valve-to-backhoe stabilizer cylinder oil lines (5 and 6) or (7 and 8) for sharp

bends, dents, or kinks.

a. If backhoe control valve-to-backhoe stabilizer cylinder oil lines (5 and 6) or (7 and 8) are not bent,

dented, or kinked, go to step 2.

b. If backhoe control valve-to-backhoe stabilizer cylinder oil line (5, 6, 7 or 8) has a sharp bend,

dent, or kink, replace (page 2-1622).

Step 2.

Check other backhoe functions for proper operation (TM 5-2420-222-10).

a. If other backhoe functions operate properly, go to step 3.

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