Raise the lift arms and install an approved lift arm support device. (See Installing Lift Arm Support Device on Page 10-20-1.)
Raise the operator cab. (See Raising The Operator Cab on Page 10-30-1.)
Remove the heater unit from the back of the cab. (See Removal And Installation on Page 80-50-1.)
NOTE: The heater fan assembly can be removed from the heater unit without disconnecting the heater plumbing. The unit is removed here for photo clarity.
Remove the grommet (Item 1) [Figure 80-70-1] from the side of the evaporator/heater unit.
NOTE: On some early heater units the metal was not cut out, so the blower wiring harness (Item 1) [Figure 80-70-2] could not be removed without removing the wiring connector.
If the metal is not cut out on the housing, mark the area (Item 1) [Figure 80-70-3] and remove it with a metal shears.
Remove the blower fan wiring harness and grommet (Item 1) [Figure 80-70-4] from the unit.
Remove the three mount bolts (Item 1) [Figure 80-70-5] from the blower fan housing.
Remove the blower fan housing from the heater unit.
Reverse the removal procedure to install the heater fan.