ONE BACKHOE STABILIZER CYLINDER DOES NOT WORK

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

b. If other backhoe functions do not operate, go to Hydraulic System Malfunction 23: All Backhoe

Cylinders Do Not Work (page 2-130).

Step 3.

Connect hydraulic system test set between backhoe control valve (9) and backhoe stabilizer

cylinder (10 or 11). Have assistant start and run engine at 1,250 rpm (TM 5-2420-222-10). While

assistant operates stabilizer control lever (12 or 13), note reading on hydraulic system test set.

Pressure gage reading should be 1700 to 1800 psi (11,645 to 12,411 kPa). Shut down engine (TM

5-2420-222-10) and disconnect hydraulic system test set.

a. If hydraulic system test set pressure gage reads 1700 to 1800 psi (11,645 thru 12,411 kPa),

replace backhoe stabilizer cylinder (page 2-1752).

b. If hydraulic system test set pressure gage reads less than 1700 psi (11,645 kPa), replace

backhoe control valve (page 2-1260).

2-129