TM 5-3810-294-34
Table 1-2. General torque values for engine
SAE GRADE No.
5
8
Bolt body size
Torque
Torque
(Inches)
Foot-Pounds
Foot-Pounds
Minimum Maximum Minimum Maximum
1/4
9
10
12
14
5/16
19
21
27
30
3/8
33
37
45
50
7/16
53
60
75
85
1/2
80
90
115
130
9/16
115
130
160
180
5/8
160
180
220
250
3/4
290
320
400
450
7/8
420
470
650
730
1
630
710
970
1090
1-1/8
850
950
1380
1550
1-1/4
1200
1350
1940
2180
1-1/2
2000
2300
3300
3700
1-3/4
3300
3700
5300
6000
2
5000
5500
8000
9000
Bolt Identification Guide
SAE Grade No.
Bolt Head Marking
5
Will have three equally spaced radial lines. Quenched
and tempered medium carbon steel.
8
Will have six equally spaced radial lines. Quenched and
tempered medium carbon alloy or medium carbon
baron steel.
Notes for table 1-2
1. When reusing bolts and nuts in service, use minimum torque values.
2. Torque values are for rigid joints. No gaskets or compressible material are used.
3. Torque values are for threads lubricated with engine oil or chassis grease. When other lubricants or
materials are used, multiply standard assembly torques by the following factors:
a. 0.85 when metallic plated bolts or nuts are used.
b. 0.75 when parkerized bolts or nuts are used.
c. 0.70 when Molykote, white lead or similar mixtures are used as lubricants
d. 0.90 when hardened surfaces are used under the nut or bolt heed.
e. 1.20 when Loctite is used on the threads of standard bolts and nuts.
f. 1.25 when taper heed bolts are used (with bolt head torquedl
g. 1.40 when Loctite in used on taper head bolt threads (with bolt head torqued.).
Table 1-3. Specific torque values
Component
Torque Value
Foot-Pounds
Minimum
Maximum
CRANE ENGINE:
Distributor bracket to cylinder head ......................................................................
18
-
22
Crankshaft rear oil seal, upper .............................................................................
18
-
22
Crankshaft rear oil seal, lower ..............................................................................
18
-
22
Carburetor to manifold .........................................................................................
20
-
24
Starting motor mounting .......................................................................................
25
-
30
Oil pump body to crankcase..................................................................................
25
-
30
Camshaft thrust washer ........................................................................................
25
-
30
Damper to pulley hub ............................................................................................
30
-
35
Fuel pump to crankcase ........................................................................................
25
-
30
Rocker arm bracket to head .................................................................................
25
-
30
Gear case to crankcase ........................................................................................
25
-
30
Water pump to cylinder head ................................................................................
25
-
30
Oil pan to crankcase .............................................................................................
25
-
30
Oil filler
......................................................................................................
25
-
30
Gear case cover to crankcase plate .....................................................................
25
-
30
Gear case cover ....................................................................................................
25
-
28
Manifold to cylinder head.......................................................................................
25
-
30
1-4
