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 418 of 790

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

0018 00--5

REAR OF VEHICLE RAISES IN SPRUNG, BUT NOT UNSPRUNG MODE -- Continued

0018 00

PORT 8 CHECK VALVE FLOW TEST

NOTE

Have suitable container ready to catch oil.

Stop engine; relieve hydraulic pressure. Disconnect LH 4 SPNSN UNIT--8 hose

(Figure 3, item 4) from check valve (Figure 3, item 1) at port 8 on No. 4 left actuator

(Figure 3, item 2). Plug end of LH 4 SPNSN UNIT--8 hose (Figure 3, item 4).

Connect drain hose to check valve (Figure 3, item 1).

While holding end of drain hose in container, have assistant start engine and move

SPRUNG/UNSPRUNG lever to SPRUNG mode. Observe for steady flow of oil from

drain hose. Vehicle should raise.

Stop engine; relieve hydraulic pressure and connect line.

Figure 3. No. 4 Left Actuator Port 8 Check Valve

CHECK VALVE INSPECTION

Inspect check valve (Figure 3, item 1). Ensure arrow (Figure 3, item 3) points away

from actuator (Figure 3, item 2).

Connect LH 4 SPNSN UNIT--8 hose (Figure 3, item 4) to check valve (Figure 3, item 1)

at port 8.