Structural Maintenance
103
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.
7. After correct end-play is obtained, add oil for
the bearings.
8. Lock the assembly in a vise with the vent
facing up. Pour the oil (P/N 203-278) through
the top plug until it runs out of the side hole.
The assembly holds 2.5 oz (74 ml). Check the
condition of the O-ring used on the plugs and
replace if necessary. Install the top and side
plugs. Clean up any spillage.
9. Place the assembly on the workbench with the
vent up. Rotate the shaft by hand. The shaft
should be free enough to rotate without having
to hold the housing.
AEA721
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
Figure 73: Fan Shaft Assembly
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
CAUTION: When installing the fan shaft
assembly, make sure that the vent is
mounted facing up.
Summary of Contents for Spectrum DE 30-2
Page 4: ...4...
Page 12: ...Safety Precautions 12...
Page 16: ...Specifications 16...
Page 31: ...Unit Description 31 1 Access Panels 2 Defrost Dampers Figure 12 Back View of Unit 1 2 AGA215...
Page 42: ...Operating Instructions 42...
Page 48: ...Electrical Maintenance 48...
Page 106: ...Structural Maintenance 106...
Page 110: ...Mechanical Diagnosis 110...
Page 114: ...Remote Evaporator Specifications 114...
Page 116: ...Remote Evaporator Maintenance Inspection Schedule 116...
Page 122: ...Remote Evaporator Electrical Maintenance 122...
Page 126: ...Remote Evaporator Refrigeration Service Operations 126...
Page 128: ...Remote Evaporator Structural Maintenance 128...
Page 130: ...Remote Evaporator System Diagnosis 130...
Page 134: ...Wiring and Schematic Diagrams Index 134...
Page 135: ...135 Schematic Diagram Page 1 of 2...
Page 136: ...136 Schematic Diagram Page 2 of 2...
Page 137: ...137 Wiring Diagram Page 1 of 4...
Page 138: ...138 Wiring Diagram Page 2 of 4...
Page 139: ...139 Wiring Diagram Page 3 of 4...
Page 140: ...140 Wiring Diagram Page 4 of 4...