4-19. WINTERIZATION SYSTEM - Continued
Heater Control Thermostat Repair
removing unit from truck.
Remove knurled nut (3) and protection
cover (1) to gain access to thermostat (2).
Tag and disconnect electrical connections.
Remove heater control thermostat (2)
and discard. Thermostat is not repairable.
Install new control thermostat.
Reconnect electrical connections. Be sure
they are connected the same as the original
Replace protection cap (1) and secure with
knurled nut (3).
Fuel Nozzle Assembly Repair.
removing complete unit from truck.
Disconnect fuel lines (6).
Disconnect wiring harness (7).
Loosen nuts (1) and swing eyebolts (5)
Support burner assembly remove cotter pin
(3). Place burner assembly on clean
Remove circlip (10) and loosen fuel nozzle
(9) with a wrench.
Do not clean the nozzle bore hole or the tip with solid objects or wire.
Do not use compressed air, use clean flowing fuel to clean nozzle and strainer.
The nozzle should not be cleaned and re-used except in an emergency. It should be replaced.