DETROIT DIESEL 53
Specifications 3.0
STANDARD BOLT AND NUT TORQUE SPECIFICATIONS
THREAD
TORQUE
THREAD
TORQUE
SIZE
(Ib-ft)
SIZE
(lb.-ft)
1/4 -20 ......................................... 7-9
9/16-12 .................................... 90-100
1/4 -28 ........................................... 8-10
9/16-18 .................................... 107-117
5/16-18 .......................................... 13-17
5/8 -11..................................... 137-147
5/16-24 .......................................... 15-19
5/8 -18..................................... 168-178
3/8 -16 ........................................... 30-35
3/4 -10..................................... 240-250
3/8 -24 ........................................... 35-39
3/4 -16..................................... 290-300
7/16-14 .......................................... 46-50
7/8 9 ....................................... 410-420
7/16-20 .......................................... 57-61
7/8 -14..................................... 475-485
1/2 -13 ........................................... 71-75
1-8........................................... 580-590
1/2 -20 ........................................... 83-93
1-14 ........................................ 685-695
EXCEPTIONS TO STANDARD BOLT AND NUT TORQUE SPECIFICATIONS
APPLICATION
THREAD
TORQUE
SIZE
(Ib-ft)
Blower drive coupling to rotor gear ( 6V) .............................................................. 1/4 "-28
10-14
Blower drive gear pilot bolt (6V) ........................................................................... 5/16 "-24
25-30
Blower timing gear-to-rotor shaft bolts
46V) ..................................................................................................................... 5/16 "-24
25-30
Front end plate cover bolts E,6V-53) .................................................................... 3/8" -16
20-25
Air inlet housing-to blower
housing bolts, ....................................................................................................... 3/8" -16
16-20
Governor-to-blower front end plate bolts .............................................................. 3/8" -16
20-24
Blower drive support-to-blower rear end
plate bolts ............................................................................................................ 3/8" -16
20-24
Flywheel housing-to-blower drive support bolts .................................................... 3/8" .-16
20-24
Blower drive gear cover bolt................................................................................. 3/8" -16
20-24
............................................................................................................................ 3/8" -24
20-25
Blower thrust washer retaining bolt
{6V)...................................................................................................................... 3/8" -24
54-59
Blower end plate-to-block bolts
6V) ....................................................................................................................... 7/16 "-14
55-60
1972 General Motors Corp
August, 1972
SEC. 3.0 Page 7
