Motor replacement:
a) Disconnect all harnesses at the PCM.
b) Disconnect the fuel supply line.
c) Loosen and back out the burner head mounting (2) bolts five to six turns
allowing enough room to rotate the burner head 15° counter-clockwise
and remove.
d) Remove blower housing (2) screws and blower housing.
e) Remove blower retaining snap ring and slide the blower off the
Motor shaft.
f) Disconnect the Motor connector at the PCM.
g) Remove Motor (4) mounting screws using a 4 mm Allen wrench.
h) Remove the Motor. Take care when removing that the Fuel Supply Pump
seal is not damaged.
i) Remove the gear retaining snap ring and gear from the old Motor and
install on the new Motor.
j) Install the new Motor. Take care when installing the Motor shaft in the
Fuel Supply Pump seal. Lubricate with clean diesel fuel.
k) Reinstall (4) screws.
l) Reconnect the Motor connector at the PCM.
m) Reinstall the blower, blower retaining snap ring, Air Compressor filter and
blower housing.
PROHEAT M-SERIES SERVICE MANUAL
3-23
Figure 3-30: Motor Replacement
BLOWER
BLOWER RETAINING SNAP RING
AIR COMPRESSOR FILTER
PCM
SCREWS (2)
TORQUE = 75 in-lbs
PCM MOTOR CONNECTION
MOTOR
GEAR RETAINING
SNAP RING
DRIVE GEAR
MOTOR SCREWS
TORQUE = 75 in-lbs
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