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TM 5-4210-220-12
4-19. WINTERIZATION SYSTEM - Continued
k.
Fuel Solenoid Valve Repair
NOTE
This
can
be
replaced
without
removing complete unit from truck.
(1)
Remove flame detector (11) as described in
d. Preceding.
(2)
Unplug connector (16) from solenoid valve
(13).
(3)
Using a 12-Vdc test lead, dab the terminals
of the solenoid valve. If the valve clicks,
the coils is working but the poppet valve is
leaking. Replace poppet valve assembly
as in step 4 following. If the solenoid does
not click, replace whole solenoid valve as in
step 5 following.
(4)
Unscrew solenoid valve (13) from nozzle
holder assembly (15). Slide out poppet
valve and spring (14) and replace new parts
in coil. Go to step 6.
(5)
Unscrew solenoid valve (13) from nozzle
holder assembly (15). Discard solenoid
valve and replace.
(6)
Screw solenoid valve carefully into nozzle
holder assembly (15).
(7)
Test as in step 3 preceding.
(8)
Plug connector (16) into solenoid valve
(13).
(9)
Attach flame detector (11) to disc (12) using
screw (8).
(10)
Place disc over fuel nozzle (9) and replace
circlip (10).
(11)
Plug detector wires into electronic control
unit.
(12)
Reinstall burner assembly onto heater base
in the truck. Replace cotter pin (3).
(13)
Swing burner assembly onto heater and
swing eyebolts (5) onto holder. Tighten
nuts (1).
(14)
Reconnect wiring harness to heater.
(15)
Reconnect fuel lines to heater.
4-307
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