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 318 of 790

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

0016 00--15

HYDRAULIC OIL OVERHEATS -- Continued

0016 00

Figure 6. Compensating Pump

CASE DRAIN LEAKAGE TEST

WARNING

Before performing any hydraulic troubleshooting in bowl, move

ejector forward and engage the ejector lock. Failure to comply may

result in severe injury or death to personnel.

NOTE

S

Have a graduated container of at least two quart (1.9 liter) capacity avail-

able to catch hydraulic oil while test is being performed.

S

Have suitable container ready to catch oil.

Start engine, move ejector forward.

Stop engine, engage ejector lock, and relieve hydraulic pressure.

Disconnect SPNSN PUMP--9 hose (Figure 6, item 3) from elbow (Figure 6, item 4) on

compensating pump (Figure 6, item 2). Cap elbow (Figure 6, item 4) and plug hose

(Figure 6, item 3).

Disconnect SPNSN PUMP DRAIN--7V hose (Figure 6, item 5) from elbow (Figure 6,

item 1). Plug hose (Figure 6, item 5). Connect drain hose (Figure 6, item 6) to elbow

(Figure 6, item 1).

Hold end of drain hose (Figure 6, item 6) in graduated container.

Have assistant start engine and run at 1,800 rpm for 15 seconds. Observe the quantity

of hydraulic oil in container. More than 1.25 qts (1.2L) indicates excessive leakage.

Stop engine; relieve hydraulic pressure, remove all test equipment, and connect hoses.