TM-9-2520-246-34
TRANSMISSION MODEL 3052, NSN 2520-00-347-4520
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL
MAY 1978
TM-9-2520-246-34 - Page 59 of 153
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
Fig.
Ref
Point of Measurement
Size and Fit
Wear Limits
No.
Letter
of New Parts
3-49
A
Inside diameter of bearing
1.7332-1.7337
.001
3-49
B
Inside diameter of drive gear
1.9995-2.0005
(*)
3-49
C
Inside diameter of fifth gear
2.2495-2.2505
(*)
3-49
D
Diameter of shaft journal
2.001-2.002
(*)
3-49
B-D
Fit of drive gear on shaft
0.0005T-0.0025T
(*)
3-49
E
Diameter of shaft journal
2.251-2.252
(*)
3-49
C-E
Fit of fifth gear on shaft
0.0005T-0.0025T
(*)
3-49
F
Second-reverse gear to
3-48
K
mainshaft second gear (backlash)
.006-.012L
.019L
3-49
F
Second-reverse gear to
3-50
F
reverse idler gear (backlash)
.006L-.012L
.019L
3-49
G
Diameter of journal on shaft
1.3788-1.3782
(*)
3-49
H
Inside diameter of bearing
1.3780
(*)
3-49
G-H
Fit of bearing on shaft
.0002L-.0002T
(*)
3-49
J
First gear to mainshaft
3-48
T
first-reverse gear (backlash)
.008L-.014L
.019L
3-49
K
Third gear to mainshaft
3-48
F
third gear (backlash)
0.006L-0.0012L
.019L
3-49
L
Diameter of journal on shaft
1.7317-1.7322
.002
3-49
A-L
Fit of bearing on shaft
.0005L-.0015L
(*)
3-49
M
Fifth gear to mainshaft
3-48
C
fifth gear (backlash)
.006L-.012L
.019L
3-49
N
Drive gear to input shaft
3-47
D
gear (backlash)
.006L-.012L
.019L
3-49
P
Thickness of thrust washer
16GA (.0598)
.007
3-24
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