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 TM 55-1905-242-14
0190 00
INSPECTION (continued)
5.
Inspect the machined surfaces of the port end cover, shaft end cover, and gear housing for roughness. Stone to remove
minor roughness. Replace if roughness is excessive.
6.
Measure the gear housing bore. A new housing measures 2.0025 inch (50.86 mm) in the small bores and 3.7525
inch (95.31 mm) in the large bore. Replace the gear housing if the radial wear exceeds 0.006 inch (0.15 mm).
7.
Inspect the thrust plates for erosion or excessive wear on the running surfaces. Replace if necessary.
8.
Inspect the motor shaft for distortion. Replace the motor shaft if it is bent or otherwise distorted.
9.
Rewash all parts except the thrust plates and dry thoroughly.
ASSEMBLY
1.
Install the spacers (18 and 42) in the inside groove in the bushing seals (17 and 43). Install one gasket (15 and 44) in the
outside groove.
2.
Lubricate the packings (16 and 45) with grease and install one packing in the inside groove of each bushing seal (17 and
43) so that both spacers (18 and 42) are together at the thick wall side of the groove.
3.
Install the packing (46) in the outside groove so that it is at the same end of the bushing seal (43) as the packing (45). Give
all packings an additional coat of grease.
4.
Place the port end cover (14) and the shaft end cover (25) on the work bench with the bearing bores facing up.
5.
Install the bushing seal (17) in the center bore in the port end cover (14) so that the spacer (18) enters before the
gasket (15).
6.
Install the roller bearings (19 and 48) in the outer bore of the port end cover (14) and the shaft end cover (25) so that they
bottom at the end of the bearing bore.
7.
Install the bushing seal (43) in the shaft end cover (25) so that the spacer (42) enters the bore before the packing (46).
Locate the bushing seal against the roller bearing (48).
8.
Place the spacer (47) in the center bore of the shaft end cover (25) next to the bushing seal (43). Press the bushing
seal in until it seats on the end of the bore. Be sure that all packings are installed toward the gear side of the
covers (14 and 25).
9.
Check that the outside bores are clean and install the roller bearings (19 and 48) so that they bottom at the end of the
bearing bores.
10. Place a small amount of grease into the middle slots in the open face of each thrust plate (23 and 38) and insert the pocket
seals (20 and 39) in each thrust plate.
11. Place the thrust plates (23 and 38) with the pocket seal slots toward the covers (14 and 25) and install over the roller
bearings (19 and 48).
12. Check to see that the pocket seals (20 and 39) are still in place and tap the thrust plates (23 and 38) into position with a
soft hammer until approximately 1/32 inch clearance is left between the thrust plates and the covers (14 and 25).
13. Insert a pocket seal (21 and 40) into each of the four center radial slots in the thrust plates (23 and 38). Insert a pocket seal
(22 and 41) into each of the four outside slots in the thrust plates. Be sure to push each pocket seal all the way
into the slots so that the hidden end is always in contact with the roller bearing race.
0190 00-5
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