TM-9-2540-207-14-P
HEATER, VEHICULAR COMPARTMENT, MODEL: A20
TECHNICAL MANUAL; OPERATOR, FIELD, AND SUSTAINMENT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2007
TM-9-2540-207-14-P - Page 147 of 288
TM 9-2540-207-14&P
5-103
Wiring Harnesses (continued)
9.
Attach the Power Harness connectors as follows:
- Connector J3 to the Burner Fan Driver Board
- Connector J5 to the Fuel Injector and rotate the Fuel Injector so that the Connector is
pointing downwards between the Burner Fan Motor and the Burner Fan Plate
- Connector J4 to the Fuel Pump
10.
Attach the Logic Harness connectors as follows:
- Connector J2 to the Diagnostic Display Board
- Connector J4 to the Fuel Pressure Transducer
11.
Ensure Logic Connector J3 (Data Comm. connector) is tucked inside the Top Housing.
12.
Install the wires in the Top Housing alongside the Burner Fan Motor.
Tuck all wires and
connectors neatly in the Top Housing using cable ties if necessary. Ensure the wires DO
NOT extend out of the Top Housing.
13.
Attach one P-Clip to the Power Harness wiring bundle and attach the Harness to the
bottom of the Top Housing using Loctite 243 (blue), a #2 cross-tip screwdriver and a
screw.
Note: The Fuel Injector Resistor (R1) ground lug is secured with this screw (ref
Figure 5.5-3). Do not tighten P-clip screw until following final length adjustments.
14.
Attach one P-Clip to the Logic Harness wiring bundle and attach the Harness to the
bottom of the Top Housing using Loctite 243 (blue), a #2 cross-tip screwdriver and a
screw. Do not tighten P-clip screw until following final length adjustments.
15.
Using a screwdriver and Loctite 243, tighten the two (2) screws holding the Fuel Injector
Resistor (R1) to the underside of the Top Housing.
16.
Install Fuel Pump Assembly(5.9.3).
17.
Check that Power Harness connector J1 is at least 5" and Logic Harness connector J1 is
at least 4.5" from the front edge of the Top Housing.
Adjust to length by moving the wire
bundles in their respective Harness sheathings and then securing them by tightening the
screws on their respective P-clips.
!CAUTION!
Do NOT trap wires of the Wiring Harness when
mounting Top Housing onto Heat Exchanger.
18.
Place the Top Housing onto the Heat Exchanger taking care not to trap or damage the
Wiring Harness. Line up Secondary Air Duct over the air pipe of the Heat Exchanger.
19.
Using pliers, move one of the 1" metal spring clamps from the Top Housing end of the
Secondary Air Duct along the Secondary Air Duct Hose and secure to the Heat
Exchanger end of the Secondary Air Duct.
20.
Using a #2 cross-tip screwdriver, secure the Top Housing to the Heat Exchanger using
four (4) screws.
Back to Top
