TM-9-2350-247-20-2 Unit Maintenance Manual Volume 2 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-2 ENGINE FUEL PUMP FLOW TEST 0147 00 THIS WORK PACKAGE COVERS: Testing (page 0147 00-1). INITIAL SETUP: M a i n t e n a n c e L e v e l Unit T o o l s a n d S p e c i a l T o o l s General Mechanic’s Tool Kit (WP 0541 00, Item 57) M a t e r i a l s / P a r t s Suitable container P e r s o n n e l R e q u i r e d Unit Mechanic Helper (H) R e f e r e n c e s See your -10 E q u i p m e n t C o n d i t i o n Engine stopped (see your -10) Carrier blocked (see your -10) Power plant rear access door/panel removed (see your -10) TESTING FLOW TEST 1. Disconnect fuel return hose (1) and hold over suitable container. 2. (H) Start engine (see your -10). Run engine at 1200 rpm. 3. Measure fuel return flow for one minute. Fuel return flow should be about 1/2 gallon per minute (2 lpm). 4. Put end of fuel return hose (1) into container of fuel. If air bubbles appear on the surface, there is an air leak on the suction side of the engine fuel pump. Tighten fuel hose connections. 5. If no air bubbles rise to the surface and fuel flow is not enough for good engine operation, replace primary fuel filter element (WP 0178 00 or WP 0179 00). 6. Measure fuel flow, see Step 2 and Step 3. If fuel flow is not enough for good engine operation, replace secondary fuel filter element (WP 0178 00 or WP 0179 00). 7. Measure fuel flow, see Step 3. 0147 00-1