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 58 of 153
TM 9-2520-246-34
Figure 3-48. Repair and Replacement Standard Points of Measurement
for Transmission Mainshaft Assembly.
Table 3-2. Repair and Replacement Standard Points of Measurement for Transmission Mainshaft Assembly
Fig.
Ref
Point of Measurement
Size and Fit
Wear Limits
No.
Letter
of New Parts
3-48
A-M
Fit of synchronizer and shaft splines
.004L-.007L
.010L
3-48
B
Thickness of thrust washer
.150-.152
.010
3-48
C
Fifth gear to countershaft
3-49
M
fifth gear (backlash)
.006L-.012L
.019L
3-48
D
Inside dia of fifth gear
2.1250-2.1255
.001
3-48
E
Outside dia of sleeve
2.1205-2.1210
.001
3-48
D-E
Fit of fifth gear on sleeve
0.004L-0.005L
.008L
3-48
F
Third gear to countershaft
3-49
K
third gear (backlash)
.006L-.012L
.016L
3-48
G
Inside dia of third gear
1.9680-1.9685
.004
3-48
H-J
Fit of synchronizer and sleeve splines
.004L-.007L
.0106L
3-48
K
Second gear to countershaft
3-49
F
second-reverse idler gear (backlash)
.006L-.012L
.019L
3-48
L
Inside diameter of second gear
2.0780-2.0785
(*)
3-48
M
Dia of shaft at journal
1.7500-1.7505
(*)
3-48
N
Dia of shaft journal
1.9640-1.9645
.004
3-48
G-N
Fit of third gear on shaft
0.0035L-0.0045L
.010L
3-48
P
Diameter of shaft journal
2.0740-2.0745
(*)
3-48
L-P
Fit of second gear on shaft
0.0035L-0.0045L
.010L
3-48
Q-R
Fit of first-reverse gear on shaft
splines
.006L-.012L
.016L
3-48
S
Inside dia of bearing
1.5748
(*)
3-48
T
First-reverse gear to
3-49
J
countershaft first gear (backlash)
.008L-.014L
.019L
3-48
T
First-reverse gear to reverse
3-50
G
idler gear (backlash)
.008L-.014L
.019L
3-48
U
Dia of shaft journal
1.5746-1.5750
(*)
3-48
S-U
Fit of bearing on shaft
0.0002L-0.0002T
(*)
3-48
V
Dia of shaft journal
1.9688-1.9698
(*)
3-48
W
Dia of shaft journal
1.0908-1.0913
.001
3-48
X
Inside dia of synchronizer sleeve
1.9680-1.9685
(*)
3-48
X-V
Fit of synchronizer sleeve on shaft
0.003T-0.0018T
(*)
3-48
Y
Inside dia of sleeve
1.7495-1.750
(*)
3-48
M-Y
Fit of sleeve on shaft
0.000-0.001T
(*)
3-48
W
Fit of main shaft in
3-47
F-E
bearing rollers, and input shaft
0.00261L-0.0044L
.0059L
3-23
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