Proheat M125 - Manual (Page 53)

NOTICE
All plugs/harnesses must be rein-
stalled into the G-II Proheat Control
Module (G-II PCM) before heater
goes back into service.
m) Using new O-rings install Fuel Delivery Block large and small O-rings, Inlet
Screen and Inlet Screen O-ring onto the rear of the Fuel Delivery Unit.
Ensure to lubricate all O-rings with diesel fuel prior to installation.
n) Re-install the Fuel Delivery Block using the three original Screws and 3 x
Lock Washers. Torque to 75 ±7 in-lbs.
o) Re-install the Flame Shield, Ignition Electrodes and the Fuel Solenoid
Valve Connector.
p) Reinstall the burner head by mounting it against the heat exchanger face,
turning clockwise to engage the mounting ears on the bolts.
q) Reconnect the electrical harnesses and fuel supply line.
r) Switch the PROHEAT on and operate for at least one complete cycle.
Observe the operation.
If a Start diagnostic code is indicated, proceed to Step 7.
NOTE: LUBRICATE
O-RINGS WITH DIESEL
FUEL PRIOR TO
INSTALLATION
NOTE: INLET SCREEN
AND O-RING
ASSEMBLY ORDER
BLOWER HOUSING
COMPRESSOR
FLANGE
FLAME
SHIELD
IGNITION
ELECTRODE
GEARS
O-RING
O-RING
O-RING
O-RING
O-RING
O-RINGS
SCREEN
PLATE
UNDERSIDE OF
SCREEN PLATE
SCREEN
SCREEN
FUEL REGULATOR
O-RING
3 x M6 SCREWS
TORQUE
75±7 IN-LBS
2 x M6 SCREWS & LOCK WASHERS
TORQUE 75±7 IN-LBS
LOCK
WASHERS
FUEL
DELIVERY
BLOCK
IDLER SHAFT
INSERT WITH THREADED
HOLE OUTWARDS
FUEL SOLENOID
VALVE CONNECTOR
Figure 4-17: Fuel Regulator Removal and Reinstallation.
4-16 PROHEAT M-SERIES G-II PCM SERVICE MANUAL