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 TM 9-2910-226-34
3-63. Advance Unit Assembly
Wear Iimits
(direct and
general support
Sizes and fits
Ref.
Fig
maintenance)
of new parts
Point of measurement
No
Ietter
*
a
1.0025 to 1.0035
OD of housing brushing type bearing. . . . . . . . . . . . . . . . . . . . . . . . .
B-7
*
0.9995 to 1.0005
b
ID of bearing bore in housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*
0.002m to 0.0040T
a-b
Fit of bearing in housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.8085
0.8090 to 0.8095
c
OD of weight and spider shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.8127
0.8098 to 0.8107
ID of housing bushing type bearing.. . . . . . . . . . . . . . . . . . . . . . . . .
c
0.0024L
0.0003L to 0.0017L
Fit of shaft in bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
cd
Advance unit springs:
e
(1) Spring SP9041(used encode B, F, G Pumps)
1.5420
Freelength, inches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
66.6
69
Spring rate, lbs/in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.8
9.3 to 10.3
Lbs. compression at 1.4000-inch length . . . . . . . . . . . . . . .
33.0
35.3 to 39.3
Lbs. compression at 1.0000-inch length . . . . . . . . . . . . . . .
(2) Spring SP9043 (used on codes C, D, E Pumps).
1.7730
Freelength, inch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
53.2
55
Spring rate, lbs/in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18.6
19.6 to 21.6
Lbs. compassion at 1.4000-inch length . . . . . . . . . . . . . . . .
29.2
40.6 to 44.6
Lbs. compression at 1.0000-inch length . . . . . . . . . . . . . . .
(3) Spring SP857-3 (used on code A Pump).
1.5330
Freelength, inches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
102.5
Spring rate, lbs/in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
49.5
51.3 to 56.7
Lbs. compression at 1.0000-inch length . . . . . . . . . . . . . . .
* See paragraph 3-59
3-64. Torque Specifications
Torque Value
Figure
30-35 inch-pounds
Fuel supply pump cover screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
Dust cover screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
Fulcrum lever hex nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12-14 inch-pounds
Fulcrum lever self-locking nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
Stop lever clamping screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
70-75 inch-pounds
Operating lever clamping nut...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
80-85 foot-pounds
Governor weight and spider assembly hubnut. . . . . . . . . . . . . . . . . . . . . . . . . . . .
48-72 inch-pounds
Covernor weight and spider assembly function drive slippage. . . . . . . . . . . . . . . .
25-40 foot-pounds
Camshaft bearing retaining locknut. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
80-90 inch-pounds
Quill shaft attaching screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
Quill shaft cover attaching screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18-20 foot-pounds
Hydraulic headattaching nuts.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20-25 foot-pounds
Oil filter screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-55 foot-pounds
Camshaft nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15-18 foot-pounds
Camshaft nut setscrew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17-20 foot-pounds
Advance unit attaching screws... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
Governor attaching screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
Governor end attaching screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18-23 inch-pounds
Control unit attaching screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
Density compensator attaching screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
High-speed adjustment screw hex nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-60 inch-pounds
Idle adjustment screw locknut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-113
Change 2
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