Chapter 5: Repair Procedures
Heater Housing Repairs
Service Manual 5-3
5.3.2 Heat Engine Assembly Removal (Figure 5-1 and Figure 5-5)
1. Two of the screws that secure the duct are behind the power supply mounting plates. To access the two
screws behind the power supply mounting plates, remove the two mounting plate screws and place the
power supplies to the side. Remove heat engine wires from clip. Disconnect the thermostats on either
side of the exhaust duct and the ground wire attached near the bottom left of the duct. Use a 3 mm hex
key to remove the 6 socket head screws, split ring washers and flat washers that secure the exhaust
duct to the lower heater housing and remove the duct. If the unit has been used recently the duct may
be hot.
2. If removing the heat engine disconnect the heater power connectors and ground wire. Remove the
3 hairpin cotter pins located under each of the heater adjustment screws and remove the assembly.
You may need to cut safety wires that secure the adjustment screws. These are for shipping purposes
and need not be replaced.
3. To remove the heater protective grill, use a small straight screwdriver to lever open the 8 clips that hold
it in place. First push the grill wires down from the top of the unit, then pull them back up with pliers to
make the clips easier to grab with the pliers. When reassembling be sure the two grill wires that poke
through the lower housing on either side of the duct are on the outside of the duct’s edges.
Warning: The heat engine, exhaust duct and protective grill may still be hot if you
disassemble the unit immediately after it has been in use.
To Next Page
Loading...
Need help?
General
