TM-5-2350-378-24-P

HYDRAULIC DIAGNOSTIC CENTER (HDC) SUPPORTING ARMORED COMBAT EARTHMOVER (ACE), M9

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

TM-5-2350-378-24-P - Page 478 of 790

TM 5--2350--378--24&P

0021 00--15

WINCH WILL NOT PULL RATED LOAD -- Continued

0021 00

Figure 13. Winch Motor

WINCH MOTOR INTERNAL LEAKAGE TEST

NOTE

Have suitable container ready to catch oil.

Disconnect WINCH DRAIN--7W hose (Figure 13, item 3) from winch motor port 7W and

plug hose (Figure 13, item 3). Connect drain hose (Figure 13, item 2) to elbow

(Figure 13, item 4) on port 7W and place end of hose (Figure 13, item 2) in container.

Disconnect CONT--VLV--VA (FWD) hose (Figure 13, item 6) from winch. Plug hose

(Figure 13, item 6) and cap elbow (Figure 13, item 5).

NOTE

Two containers are necessary for a true metered 15--second

reading during winch motor internal leakage test.

Have assistant start vehicle engine and hold WINCH CONTROL lever (Figure 13,

item 1) in PAY IN position. With lever held in PAY IN position and oil flowing, move drain

hose 7W (Figure 13, item 2) to a graduated container for exactly 15 seconds. Return

WINCH CONTROL lever (Figure 13, item 1) to NEUTRAL position.

Measure oil in graduated container. Allowable internal leakage flow from drain hose

(Figure 13, item 2) is 1.25 qts (1.18 L) in 15 seconds or 1.25 gpm (4.73 Lpm).

Stop engine; relieve hydraulic pressure and connect all hoses.