TM-9-2320-209-34-2-1
2½-TON, 6X6, M44A1 AND M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; MAINTENANCE; DIRECT SUPPORT AND GENERAL SUPPORT LEVEL; VOLUME 2 OF 2; PART 1 OF 3
MAY 1981
TM-9-2320-209-34-2-1 - Page 467 of 770
frame 6
TM 9-2320-209-34-2-1
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Check that front bearing (1) and rear bearing (2) are not damaged.
Using inside micrometer, measure inner diameter of front bearing (1) and
rear bearing (2). Note measurements.
Using outside micrometer, measure outside diameter of pinion gear (3). Note
measurement.
Using outside micrometer, measure outside diameter at front end of shaft (4).
Note measurement.
Subtract measurement made in step 3 from measurement made in step 2. Check
that fits of rear bearing (2) to pinion gear (3) are within limits given in
table 10-8. If fits are not within limits given, get new parts for worn ones.
Subtract measurement made in step 4 from measurement made in step 2. Check
that fits of front bearing (1) through shaft (4) are within limits given in
table 10-8. If fits are not within limits given, get new parts for worn ones.
Using outside micrometer measure outer diameter of front bearing cup (5) and
rear bearing cup (6). Note measurements.
Using inside micrometer, measure openings in differential carrier (7). Note
measurements.
Subtract measurements made in step 7 from measurements in step 8. Check
that fits of bearing cups (5 and 6) are within limits given in table 10-8. If
fits are not within limits given, get new parts for worn ones.
Check that bevel pinion gear (3) is not chipped, burred, cracked, scored or
broken. Get new gear if damage cannot be fixed with a honing stone.
END OF TASK
Table 10-8. Pinion Gear and Shaft Wear Limits (The letter T shows a tight fit
and the letter L shows a loose fit.)
Size and Fit
of New Parts Wear Limit
Number
Item/Point of Measurement (inches) (inches)
1 to 4
Fit of bearing on shaft 0.0010L to 0.0015T
None
2 to 3
Fit of bearing on pinion 0.0000L to 0.0015T
5 to 7
None
Fit of bearing to case bore
0.0025T to 0.0050T
0.0020T
6 to 7
Fit of bearing to case bore
0.0025T to 0.0050T
0.0020T
10-68
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