TM 5-4520-253-13
HEATER CASE ASSEMBLY REPAIR PROCEDURES INDEX
PROCEDURE
PAGE
Disassemble/Assemble Heater Case Assembly
4-33
General Repair Heater Case Assembly
4-35
Remove/Install Shields and Shield Insulator
4-37
Repair Painted Surfaces
4-39
D I S A S S E M B L E / A S S E M B L E H E A T E R C A S E A S S E M B LY
TOOLS: Tool kit, service, refrigeration unit
NSN 5180-00-596-1474
EQUIPMENT CONDITION:
Page
Condition Description
3-38
4-12
3-78
3-87
3-91
4-40
4-53
3-107
4-62
3-110
4-67
Control box assembly removed.
Printed circuit (PC) board assembly removed.
Doors removed.
Fuel lines and fittings removed.
Fuel filter removed.
Combustion blower removed.
Ventilating air motor removed.
Safety thermostats and thermocouple removed.
Burner head assembly removed.
Ignition transformer and cable removed.
Heat exchanger removed.
DISASSEMBLY:
1. Force grommet (1) out of hole in exchanger housing panel. If grommet is cracked, worn, or
damaged, replace.
2. Remove one screw (2) and two lock washers (3) and lift off ground strap (4). If ground strap
is torn, badly corroded, or has loose terminal, replace.
3. Remove three screws (5) and lock washers (6) at front of heater and lift off front mounting
bracket (7).
4. Remove four screws (8) and lock washers (9) at rear of heater and lift off rear mounting
bracket (10).
4-33
