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Page Title:
Figure 3-49. Repair and Replacement Standard Points of Measurement for Transmission Countershaft and Gears. |
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 TM 9-2520-246-34
Figure 3-49. Repair and Replacement Standard Points of Measurement for
Transmission Countershaft and Gears.
Table 3-3. Repair and Replacement Standard Points of Measurement for
Transmission Countershaft and Gears
Size and Fit
Fig.
Ref
Wear Limits
Point of Measurement
of New Parts
No.
Letter
1.7332-1.7337
Inside diameter of bearing
.001
A
1.9995-2.0005
Inside diameter of drive gear
B
(*)
2.2495-2.2505
Inside diameter of fifth gear
C
(*)
2.001-2.002
Diameter of shaft journal
D
(*)
0.0005T-0.0025T
3-49
Fit of drive gear on shaft
B-D
(*)
2.251-2.252
Diameter of shaft journal
E
(*)
0.0005T-0.0025T
Fit of fifth gear on shaft
3-49
C-E
(*)
Second-reverse gear to
F
.019L
mainshaft second gear (backlash)
.006-.012L
K
Second-reverse gear to
F
.019L
reverse idler gear (backlash)
.006L-.012L
F
1.3788-1.3782
Diameter of journal on shaft
G
(*)
1.3780
Inside diameter of bearing
H
(*)
Fit of bearing on shaft
.0002L-.0002T
3-49
G-H
(*)
First gear to mainshaft
J
.019L
.008L-.014L
first-reverse gear (backlash)
T
Third gear to mainshaft
K
.019L
third gear (backlash)
0.006L-0.0012L
F
1.7317-1.7322
.002
Diameter of journal on shaft
L
Fit of bearing on shaft
.0005L-.0015L
A-L
(*)
3-49
Fifth gear to mainshaft
M
.019L
fifth gear (backlash)
.006L-.012L
C
Drive gear to input shaft
N
.019L
.006L-.012L
gear (backlash)
D
.007
Thickness of thrust washer
16GA (.0598)
P
3-24
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