90
TK 56433-5-MM-EN
Figure 119.
Fan Shaft and Housing
1.
Apply Bead of Loctite 603 to Leading Edge
2.
Apply Bead of Loctite 603 to Outer Races
10. Insert the fan shaft and bearings into the evaporator
end of the housing. Make sure the bonding surfaces
of the housing and bearings are well covered with
Loctite 603.
N
No
otte
e:: Loctite 603 and Loctite 7240 (activator) will
begin to bond within seconds upon contact.
N
No
otte
e:: Curing time for Loctite 603 is 6 hours when
Loctite 7240 (activator) has been used. Do not
install the fan shaft in the unit until the Loctite
has cured.
11. Install the wave washer on the condenser end of the
fan shaft.
12. Install the bearing on the condenser end of the fan
shaft.
13. Install the snap ring on the condenser end of the fan
shaft.
Installation
1. Make sure the key is in place in the evaporator end
of the fan shaft.
2. Install the fan shaft while sliding the evaporator
blower onto the end of the fan shaft.
3. Install and tighten the fan shaft mounting bolts.
4. Center the evaporator blower in the blower housing
with equal overlap on both inlet orifices and tighten
the hub pinch bolts (see “Evaporator Fan Blower
Alignment” above).
5. Make sure the key is in place in the condenser end
of the fan shaft.
6. Place the upper condenser blower on the fan shaft
and slide it into position to where its pulley is
aligned correctly with the other pulleys and tighten
the hub pinch bolts.
7. Install the upper condenser inlet orifice. Center it in
the upper condenser blower and tighten the
mounting hardware (see “Condenser Inlet Orifice
Alignment” above).
8. Install the fan drive belt. See “Fan Drive Belt” in the
Engine Maintenance Chapter.
Lower Condenser Blower
Assembly
The lower condenser blower assembly contains special
sealed bearings. The bearings should be checked when
the belt is replaced. Spin the lower condenser blower
with the belt removed and listen. Unusually loud
bearing noise indicates the lower condenser blower
bearings should be replaced.
Removal
1. Remove the fan drive belt. See “Fan Drive Belt” in
the Engine Maintenance Chapter.
2. Remove the mounting hardware for the lower
condenser inlet orifice and remove it.
3. Remove the hardware that fastens the blower
spindle to the spindle mounting bracket and
remove the lower condenser blower assembly.
Disassembly
1. Remove the snap ring.
2. Remove the spindle and wave washers from the
blower hub.
3. Remove the bearings from the blower hub with a
hammer and punch.
4. Clean and inspect the parts, but do not clean the
bearings in solvent. Replace the parts that show
significant wear or damage.
