TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-1 VEHICLE COMPARTMENT HEATER MALFUNCTIONS 0085 00 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) Multimeter (WP 0541 00, Item 29) Slip Joint Pliers (WP 0541 00, Item 33) P e r s o n n e l R e q u i r e d Unit Mechanic R e f e r e n c e s See your -10 TM 9-2540-205-24&P 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) Heater HI-LO switch in LO NOTE M548A1 and M548A3 troubleshooting procedures are the same even though component locations are different. When needed, locators are used to show the different component locations. The compartment heater has a fuel filter in between the fuel pump and the heater. T 1. Press heater-on indicator cover lens. 2. Does indicator light come on? TN GO TO BY (PAGE 0085 00-3) Y 1. Release heater-on indicator. 2. Move RUN-OFF-START switch to START. 3. Does heater blower come on? YN GO TO CY (PAGE 0085 00-5) 2Y 1. Check if heater fuel pump comes on. 2. Does heater fuel pump come on? 2YN GO TO EY (PAGE 0085 00-8) 3Y 1. Check on how many minutes it takes heater-on indicator to come on. 2. Does heater-on indicator come on in less than three minutes? 3YN GO TO GY (PAGE 0085 00-9) 0085 00-1 Change 1