Thermo King 919180, Manual

Page: 121 / 148

Structural Maintenance
121
Fanshaft Assembly
The unit is equipped with a one-piece fanshaft
assembly that contains tapered roller bearings in a
sealed oil reservoir. This assembly does not
require any maintenance. There is a level plug and
a fill plug, but they are not normally utilized
except after removal and repair of the fanshaft
assembly. The condenser end oil seal and the
evaporator end oil seal should be checked during
the pretrip inspection for oil leakage. If there is
any sign of leakage, the fanshaft assembly should
be removed and repaired.
NOTE: The fanshaft assembly requires a special
lubricant (see Tool Catalog).
Disassembly
1. Remove the fanshaft assembly from the unit.
Remove both oil plugs and drain the oil from
the housing.
2. After draining the oil from the housing,
remove the four retaining bolts from the
bearing retainer cap.
Figure 79: Removing Bearing Retainer Bolts
3. To remove the shaft from the assembly, tap the
opposite end of the shaft with a soft hammer.
After the shaft has been removed, clean all
parts in clean solvent.
Figure 80: Removing Shaft
1. Oil Plug Screw with O-ring
2. Housing
3. Breather Vent
4. Oil Seal
5. Shaft
6. Sleeve
7. Pin
8. Screw with Flatwasher and Lockwasher
9. Cap and Shims
10. O-ring
11. Roller Bearing
12. Splash Guard Tube
Figure 78: Fan Shaft Assembly