TM 55-1925-286-13&P
0026 00
ASSEMBLY
1. Slide the new fan (figure 1, item 6) onto the rotor's shaft (figure 1, item 7).
2. Secure the fan (figure 1, item 6) to the rotor's shaft (figure 1, item 7) by tightening the nut (figure 1, item 4) and
bolt (figure 1, item 5).
3. Install the fan cover (figure 1, item 2) on the front endplate (figure 1, item 3), and secure it with the three
screws (figure 1, item 1).
REPLACE MOTOR BEARINGS
DISASSEMBLY
1. Perform the Replace Cooling Fan Disassembly procedure in this work package.
2. Remove the four through bolts (figure 1, item 8) and four nuts (figure 1, item 9).
3. Remove the pulley endplate (figure 1, item 10) and front endplate (figure 1, item 3) from the rotor's shaft
(figure 1, item 7).
4. Carefully remove the rotor's shaft (figure 1, item 7) from the motor case (figure 1, item 11).
NOTE
sembly so that the new bearings are installed in the proper location during assembly.
5. Using a bearing puller, remove the front bearing (figure 1, item 12) and rear bearing (figure 1, item 13) from
the rotor's shaft (figure 1, item 7). Note the position of the bearings so that the new bearings are installed in
the proper location on assembly. Discard the old bearings.
ASSEMBLY
1. Install the new front bearing (figure 1, item 12) and new rear bearing (figure 1, item 13) onto the rotor's shaft
(figure 1, item 7).
2. Carefully install the rotor's shaft (figure 1, item 7) into the motor case (figure 1, item 11).
3. Hold the rotor's shaft (figure 1, item 7) in position while sliding the front endplate (figure 1, item 3) over the
shaft and onto the motor case (figure 1, item 11).
4. Hold the rotor's shaft (figure 1, item 7) in position while sliding the pulley endplate (figure 1, item 10) over the
rotor's shaft and onto the motor case (figure 1, item 11).
5. Secure the endplates (figure 1, items 3 and 10) with the four through bolts (figure 1, item 8) and four nuts
(figure 1, item 9).
6. Perform the Replace Cooling Fan Assembly procedure in this work package.
TEST ELECTRIC MOTOR WINDING
1. Perform the Replace Motor Bearings Disassembly procedure in this work package.
2. Using an ohmmeter (figure 2, item 1), connect one ohmmeter test lead (figure 2, item 2) to a motor winding
lead (figure 2, item 3), and the other ohmmeter test lead (figure 2, item 2) to the electric motor housing (figure
2, item 4).
0026 00-2
