3.0
Specifications
DETROIT DIESEL 53
STANDARD BOLT AND NUT TORQUE SPECIFICATIONS
THREAD
TORQUE
THREAD
TORQUE
SIZE
(lb. - 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 bolt (in-line).................................................
1/4"-28
14-18
Blower drive gear pilot bolt (in-line)...................................................................
5/16 "-24
25-30
Blower timing gear-to-rotor shaft bolts
(in-line and 6V).................................................................................................
5/16 "-24
25-30
Blower thrust washer retaining bolt
(in-line) ."..........................................................................................................
5/16 "-24
25-30
Air inlet adaptor-to-blower bolts........................................................................
3/8" - 16
16-20
Air inlet housing-to-adaptor or 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
Blower-to-engine rear end plate and flywheel
housing bolts (3-53)..........................................................................................
3/8" - 16
20-25
3/8" - 24
20-25
Blower thrust washer retaining bolt
(in-line).............................................................................................................
3/8" - 24
5459
Blower end plate-to-block bolts........................................................................
7/16 "-14
55-60
Page 6