TM 9-2350-247-20-3
REPLACE ENGINE COOLANT HEATER WIRING HARNESS
0473 00
THIS WORK PACKAGE COVERS:
Removal (page 0473 00-1).
Cleaning (page 0473 00-2).
Installation (page 0473 00-3).
INITIAL SETUP:
Maintenance Level
Unit
Tools and Special Tools
General Mechanic’s Tool Kit (WP 0541 00, Item 57)
Multimeter (WP 0541 00, Item 29)
Materials/Parts
Wiping rag (WP 0542 00, Item 45)
Grommet
Lock washer (2)
Lock washer (10)
Personnel Required
Unit Mechanic
References
See your -10
Equipment Condition
Engine stopped (see your -10)
Carrier blocked (see your -10)
Battery negative lead(s) disconnected (WP 0292 00)
Top left access grille removed (see your -10 or
WP 0390 00)
Heater exhaust pipe removed (WP 0480 00 or
WP 0481 00)
REMOVAL
NOTE
Engine coolant heater wiring harness for M548A1 and M548A3 is removed and installed the
same way. M548A1 wiring harness is shown.
1.
Pull back protector (1) on circuit 402A lead (2). Remove nut (3), washer (4), and lead from coolant pump (5).
2.
Disconnect circuit 402A lead (6) from connector (7).
3.
Remove nut (8), two lock washers (9), screw (10), and ground lead (11) from mount (12). Discard lock washers.
4.
Disconnect connector (13) from coolant heater (14).
0473 00-1
