TM 9-2320-260-34-1
8-6. TRANSMISSION MAINTENANCE (Contd)
5. Inspect main shaft (1), countershaft (2), reverse idler gearshaft (3), and input shaft (4) for wear.
Refer to table 8-3, Wear Limits, for measurements. Replace main shaft (1), countershaft (2), reverse
idler gearshaft (3), or input shaft (4) if worn past limits.
WEAR LIMITS/TOLERANCES
ITEM/POINT OF MEASUREMENT
ITEM NO.
INCHES
CENTIMETERS
MAINSHAFT
1
1.3096-1.3101
3.3264-3.3277
(a) outside
diameter
5.0749-5.0775
1.998-1.999
(b) outside
diameter
2.1650-2.1655
5.4991-5.5004
(c) outside
diameter
8.8011-8.8024
3.4650-3.4655
(d) outside
diameter
1.3096-1.3101
3.3264-3.3277
(e) outside
diameter
2.2415-2.2420
(f) outside
diameter
5.6934-5.6947
2.2545-2.2550
5.7264-5.7277
(g) outside
diameter
2.495-2.505
(h) outside
diameter
6.3373-6.3627
(i) outside
diameter
2.8715-2.8720
7.2936-7.2949
2.8730-2.8735
7.2974-7.2987
(j) outside
diameter
2
COUNTERSHAFT
2.1865-2.1871
5.5537-5.5552
(k) outside diameter
2.319-2.324
(l) outside diameter
5.8903-5.9030
2.376-2.377
(m) outside diameter
6.0350-6.0376
2.610-2.615
(n) outside diameter
6.6294-6.6421
2.623-2.624
(o) outside diameter
6.6624-6.6650
2.626-2.627
6.6700-6.6726
(p) outside diameter
2.631-2.632
6.6827-6.6853
(q) outside diameter
(r) outside diameter
3.869-3.879
9.8273-9.8527
3.152-3.162
8.0061-8.0315
(s) outside diameter
1.9683-1.9687
4.9995-5.0005
(t) outside diameter
3
REVERSE IDLER GEARSHAFT
1.2515-1.2520
(u) outside diameter
3.1788-3.1801
(v) outside diameter
1.2495-1.2500
3.1737-3.1750
2.5387-2.5400
(w) outside diameter
0.9995-1.0000
INPUT SHAFT
4
1.1793-1.1803
2.9954-2.9980
(x) outside diameter
1.739-1.741
4.4171-4.4221
(y) outside diameter
1.781-1.784
4.5237-4.5314
(z) outside diameter
2.0626-2.0634
5.2390-5.2410
(aa) inside diameter
13.9065-13.9319
5.475-5.485
(bb) outside diameter
8-24
