TM 55-2210-224-34
3-64. TRACTION MOTOR ASSEMBLY (cont)
ASSEMBLY
38. Assemble gear unit (8) by the following:
WARNING
Heated and cooled parts may cause injury to personnel if hand protection is not worn when
handling. Wear protective gloves for maximum protection.
a. Place bearing (69) in dry ice and freeze until it
will fit into gear box (70).
b. Remove bearing (69) from dry ice and install in gear box (70). Position gasket (68) and bearing housing (67) and
install nine capscrews (66). Lockwire capscrews.
c. Place bearing races (72) and (71) in dry ice and freeze until the races will fit into their respective bearing
housings. Place bearing housings (58) and (54) on induction heater and heat to 212
°F (100°C).
d. Remove bearing housing (58) from heater and bearing race (72) from dry ice. Place bearing race in bearing
housing, tight against seat. Let cool to room temperature.
e. Remove bearing housing (54) from heater and bearing race (71) from dry ice. Place bearing race in bearing
housing, tight against seat. Let cool to room temperature.
f. Assemble intermediate shaft assembly (60) by the following:
(1) Place hypoid gear (64) on an induction heater and heat to 167
°F (75°C).
(2) Remove hypoid gear (64) from induction heater and install on intermediate shaft (65). Install 18 bolts (63).
Lockwire bolts in pairs.
(3) Place bearing and roller assemblies (62) and (61) on induction heater and heat to 212
°F (100°C) above
intermediate shaft temperature.
(4) Remove bearing and roller assemblies (62) and (61) from heater and install on intermediate shaft (65), tight
against seats.
g. Use a suitable lifting device and place intermediateshaft assembly (60) in gear box (70).
h. Position shim pack (59) and bearing housing (58) on gear box (70) and install nine lockwashers (57) and
capscrews (56). Be sure to use original shim pack.
i. Guide intermediate shaft assembly (60) into both bearing housings. Install split spacer (55) and bearing housing
(54).
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