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 61 of 288
TM 9-2540-207-14&P
5-17
Vent Fan Assembly Design Iteration 1 and 2 (Continued)
5.6.1.1.2 Installation
Note:
The Combustion Air duct should remain with the Vent Fan Assembly
as it is removed.
Loctite 770 primer and Loctite 401 are used to seal the
Combustion Air Duct to the Vent Fan Assembly.
8.
Clean the Top Housing Combustion Air Inlet by removing any old sealant, and then coat
with Silicone RTV to provide a seal for the Combustion Air Duct.
Note:
The ends of the Combustion Air Duct must be sealed to the Vent Fan
Assembly and to the Top Housing.
Place Vent Fan Assembly onto the Burner Housing Assembly, ensuring that the motor
frame sits correctly over the Burner Housing, and that the Combustion Air Duct is
aligned with the Top Housing air inlet. DO NOT use excessive force.
9.
When pushing the Vent Fan Assembly onto the Burner Housing, check that the gasket
around the Burner Housing stays in position, and that the wires of the Wiring Harness
are not trapped.
Check that the Combustion Air Duct is properly mated with the Top
Housing air inlet.
10.
Tighten the bolt using a 5/16" socket. DO NOT OVER TIGHTEN.
Check that the Vent
Fan rotates freely.
11.
Attach Wiring Harness connector
J1
to the Electronic Programmed Controller board.
Ensure that the locking tabs are properly engaged.
12.
Attach Wiring Harness connector
J6
to the Vent Fan Driver.
Ensure that the locking
tabs are properly engaged.
while screwing down the J1 connector.
13.
Attach
Wiring Harness
connector
J1
to the Electronic Programmed Controller board.
Ensure that the pins are clean and aligned properly, and tighten the jack screws evenly
using a 1/8" flat blade screwdriver until the surfaces mate. DO NOT OVER TIGHTEN the
jack screws.
14.
Install Bottom Shell (ref. 5.4.3).
15.
Install Top Shell (ref. 5.4.2).
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