Thermo King SB-190 30, Manual

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Structural Maintenance (Rev. 12/03)
87
8. The bearing races can now be driven out with a punch
and replaced in the same manner.
Reassembly
1. Tap the new bearings on the shaft with a pipe.
2. Install new oil seals after replacing the bearing races.
3. Replace the shaft in the housing. Install a new seal in
the retainer cap. Use the original shims and replace the
O-ring if needed.
4. Install the retainer cap assembly over the shaft, then
install the bolts.
5. Torque the bolts in a criss-cross pattern in equal steps to
80 in-lb (9.04 N•m).
6. Lock the assembly in a vise and set up a dial indicator
to read end-play. To measure the end-play, rotate the
shaft while pushing in one direction and set the dial
indicator to ‘0’. Now rotate the shaft and pull in the
opposite direction while reading the dial indicator. End-
play should be 0.001 to 0.005 in. (0.025 to 0.127 mm).
If end-play is incorrect, use different shims to obtain
correct end-play.
Shims available from the Service Parts Department:
0.020 in. (0.500 mm) Thermo King P/N 99-4231
0.007 in. (0.177 mm) Thermo King P/N 99-2902
0.005 in. (0.127 mm) Thermo King P/N 99-2901
1. Cap and Shims 6. Oil Seal
2. Oil Plug Screw (Use Oil P/N 203-278) 7. Shaft
3. Breather Vent 8. Sleeve
4. Housing 9. Pin
5. Roller Bearing 10. O-ring
Fan Shaft Assembly
AEA721