Thermo King KD-II SR, Manual

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Structural Maintenance (Rev. 04/03)
135
JACKSHAFT ASSEMBLY
The KD-II SR 30 does not have electric standby capability,
therefore, the electric motor is replaced by a jackshaft. The
jackshaft assembly oil level plug should be removed, and
the oil level checked every 1000 operating hours. Check the
jackshaft during the pre-trip inspection for oil leakage. If
there is any sign of leakage, remove the jackshaft assembly.
Model 30 truck units are equipped with jackshafts that have
improved venting. This improvement was made by using a
new air vent (P/N 55-6417), adding an oil sling retainer
(P/N 77-2434), and using fanshaft oil (P/N 203-278). The
new air vent, oil sling retainer, and fanshaft oil reduce the
build-up of pressure inside the jackshaft.
Disassembly
1. Remove jackshaft assembly from the unit and remove
the pulleys.
2. Remove the level and fill plugs and drain oil reservoir.
1. Shim
2. O-Ring
3. Seal
4. Bearing
5. Shaft
6. Oil Sling Retainer
Jackshaft Assembly with Oil Sling Retainer
3. Remove bearing retainer cap from fill plug end of the
jackshaft assembly.
NOTE: There are shims between the bearing retainer
cap and the housing. These should be saved for possi-
ble reuse during reassembly.
4. Remove the shaft and bearings.
NOTE: The oil sling retainer is pulled out by the bear-
ing assembly on shaft.
5. Remove the retainer cap from level plug end of
assembly.
6. Use a punch and hammer to remove the seals and bear-
ing cups from bearing retainer caps.
7. Use a bearing splitter or similar tool to remove the
bearing cones from the shaft.
8. Clean all parts in clean solvent and then examine the
bearing cups and cones for damage.