Structural Maintenance
144
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 pre-trip 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, TK P/N 203-278.
Disassembly
1. Remove the fanshaft assembly from the unit.
Remove both oil plugs and drain the oil from
the housing.
Figure 67: Removing Bearing Retainer Bolts
2. After draining the oil from the housing,
remove the four retaining bolts from the
bearing retainer cap.
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 68: Removing Shaft
4. Using a punch, remove the oil seal from the
evaporator end of the assembly. With the seal
removed, clean the housing in solvent.
Figure 69: Removing Oil Seal
5. Check the condition of the vent. If it is loose
or damaged, it must be repaired or replaced.
6. After all the parts are cleaned, inspect the
bearings and bearing races for wear or
damage.
7. To replace the bearings, first remove the roll
pin that is in the center of the shaft.
To Next Page
Loading...
Need help?
General
