| Series 53 Torque Specifications |
| Thread
Size (in.) |
Class & Application |
Torque Specifications |
| lb-ft |
N-m |
| 1/4-20 |
Standard Torque Specification |
7-9 |
9-12 |
| Bolt-Injector Control Shaft Bracket |
10-12 |
14-16 |
| Bolt-Cam Follower Guide |
12-17 |
16-23 |
| 1/4-28 |
Standard
Torque Specification |
8-10 |
11-14 |
| Screw-Injector Rack Control Lever |
2-3 |
3-4 |
| 5/16-18 |
Bolt-Oil
Pan (Low Pan or Aluminum Flywheel Housing & Front Cover) |
10-20 |
14-27 |
| 5/16-18 |
Bolt
Water Pump Cover |
12-15 |
16-20 |
| 5/16-18 |
Bolt-Flywheel
Housing to Gov Housing (Inline) |
10-12 |
14-16 |
| 5/16-18 |
Bolt-Oil
Pick-up Tube |
20-25 |
27-34 |
| 5/16-18 |
Bolt-Idler
Gear Hub and Spacer Alum |
15-20 |
20-27 |
| 5/16-18 |
Bolt-Air
Box Cover 1/4 Thick Clamp |
8-10 |
11-14 |
| 5/16-18 |
Standard
Torque Specification |
13-17 |
18-23 |
| Bolt-Idler Gear Hub and Spacer (Cast) |
19-23 |
26-31 |
| Bolt-Oil Pan (Cast) - Hard Gasket |
13-21 |
18-28 |
| 5/16-24 |
Standard
Torque Specification |
15-19 |
20-26 |
| Nut-Push Rod Lock |
15-19 |
20-26 |
| Bolt-Blower Rotor Gear Hub |
25-30 |
34-41 |
| Bolt Blower Thrust Washer Retaining |
25-30 |
34-41 |
| Bolt-Blower Drive Cam Pilot |
25-30 |
34-41 |
| 5/16-24 |
Nut-Connecting
Rod V53 Only |
24-28 |
33-38 |
| 3/8-16 |
Standard
Torque Specification |
30-35 |
41-47 |
| Bolt-Rocker cover Hold Down |
8-13 |
11-18 |
| Bolt-Flywheel Housing to Idler Gear and Dummy
Hub ( Place Type) |
40-45 |
54-61 |
| Bolt-Air Inlet Housing to Blower |
16-21 |
22-28 |
| Nut-Oil Cooler Element |
90-110 |
122-149 |
| Bolt-Front and Rear Blower End Plate Cover |
20-25 |
27-34 |
| Bolt-Flywheel Housing Balance Weight Cover |
20-25 |
27-34 |
| 3/8-16 |
Bolt-Front and Rear Blower End |
20-25 |
27-34 |
| Bolt-Housing to Intercooler |
10-15 |
14-20 |
| Bolt-Air Box Cover Cast 6V53 |
12-17 |
16-23 |
| Bolt-Air Box Cover Inline 53 |
12-16 |
16-22 |
| Bolt-Air Box Cover 3/8 Thick Clamp |
10-15 |
14-20 |
| Bolt-Injector Clamp |
20-25 |
27-34 |
| 3/8-24 |
Standard
Torque Specification |
35-39 |
47-53 |
| Connector-Fuel |
34-40 |
46-54 |
| Bolt-Accessory Drive to Balance Gear (Steel Disc) |
45-0 |
61-68 |
| Bolt-Blower Thrust Plate Retainer |
54-59 |
73-80 |
| Bolt-Flywheel Housing Balance |
25-30 |
34-41 |
| Bolt-Front and Rear End Plate Cover |
20-25 |
27-34 |
| Nut-Connecting Rod Inline and Vee |
40-45 |
54-61 |
| Nut-Plug blower Drive Assembly and Flywheel Housing
Plug Nuts |
5-30 |
34-41 |
| Nut-Fuel Jumper Line |
12-16 |
16-22 |
| 7/16-14 |
Standard
Torque Specification |
46-50 |
62-68 |
| Bolt-Tachometer Drive Cover |
30-35 |
41-47 |
| Bolt-Crankshaft Outboard Main Bearing Support
to Cover |
75-85 |
102-115 |
| Bolt-Flywheel Housing Large Hole Cover |
30-35 |
41-47 |
| Stud-Exhaust Manifold |
25-40 |
34-54 |
| Bolt-Rocker Arm Bracket |
50-55 |
68-75 |
| 7/16-20 |
Standard
Torque Specification |
57-61 |
77-83 |
| Nut-Exhaust Manifold |
30-35 |
41-47 |
| 1/2-13 |
Standard
Torque Specification |
71-75 |
96-102 |
| Bolt-Tachometer Drive Cover |
30-35 |
41-47 |
| Bolt-Flywheel Housing Large Hole Cover |
30-35 |
41-47 |
| 1/2-20 |
Standard
Torque Specification |
83-93 |
113-126 |
| Bolt-Blower Rotor Gear Retainer |
25-30 |
34-41 |
| Bolt-Flywheel |
110-120 |
149-163 |
| Plug-Fuel Pump Relief Valve |
18-22 |
24-30 |
| 9/16-12 |
Standard
Torque Specification |
90-100 |
122-136 |
| 9/16-18 |
Standard
Torque Specification |
107-117 |
145-159 |
| Stud-Clutch Fork Ball |
65-75 |
88-102 |
| 5/8-11 |
Standard
Torque Specification |
137-147 |
186-199 |
| Bolt-Starter To Aluminum Flywheel Housing |
95-105 |
129-143 |
| 5/8-18 |
Standard
Torque Specification |
168-178 |
228-241 |
| Nut-Governor Gear |
125-135 |
169-183 |
| Bolt-Lube Oil Filter Center |
50-60 |
68-81 |
| Nut-Alternator Pulley |
70-80 |
95-108 |
| Nut-Special Self Locking Nut (10SI Alternator) |
40-60 |
54-81 |
| Caps-Injector Filter |
65-75 |
88-102 |
| Nut Standard, Dipstick Tube |
30-35 |
41-47 |
| Nut-Accessory Drive Pulley |
120-140 |
163-190 |
| 3/4-16 |
Standard
Torque Specification |
290-300 |
393-407 |
| Bolt-Crankshaft End |
290-300 |
393-407 |
| 7/8-14 |
Standard
Torque Specification |
475-485 |
644-658 |
| 1-14 |
Bolt-Crankshaft
End |
290-310 |
393-420 |
| 1/18-18 |
Nut-Cam
and Balance Shaft |
300-325 |
407-441 |
| 1/4-28 |
Bolt-Blower
Drive Coupling to Rotor Gear |
16-18 |
22-24 |
| 7/16-14 |
Bolt-Blower
to Block |
55-60 |
75-81 |
| Nut-Fuel Jumper Line-Stl to Inject |
13-17 |
18-23 |
| 7/16-20 |
Nut-Fuel
Jumper Line CTD-Injector |
11-13 |
15-18 |
| 9/16-12 |
Bolt-Cylinder
Head End 3-53 Alum |
170-180 |
230-244 |
| Bolt-Main Bearing Cap |
120-130 |
163-176 |
| 9/16-18 |
Bolt-Flywheel
V53 |
180-190 |
244-258 |
| 5/8-11 |
Bolt-Cylinder Head |
190-200 |
258-271 |
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| Series
53 Pipe Plug |
| Plug
Size (in.) |
Characteristic |
Torque Specifications |
| lb-ft |
N-m |
| 1/8-27 |
Plug-Pipe (3/4 Taper) |
10-12 |
14-16 |
| 1/4-18 |
Plug-Pipe
(3/4 Taper) |
14-16 |
19-22 |
| 1/4-18 |
Plug-Pipe
(7/8 Taper) |
14-16 |
19-22 |
| 3/8-18 |
Plug-Pipe
(3/4 Taper) |
18-22 |
24-30 |
| 3/8-18 |
Plug-Pipe
(7/8 Taper) |
18-22 |
24-30 |
| 1/2-14 |
Plug-Pipe
(3/4 Taper) |
23-27 |
31-37 |
| 1/2-14 |
Plug-Pipe
(7/8 Taper) |
23-27 |
31-37 |
| 3/4-14 |
Plug-Pipe
(3/4 Taper) |
33-37 |
45-50 |
| 3/4-14 |
Plug-Pipe
(7/8 Taper) |
33-37 |
45-50 |
| 1-11
1/2 |
Plug-Pipe
(3/4 Taper) |
75-85 |
102-115 |
| 1
1/4-11 1/2 |
Plug-Pipe
(3/4 Taper) |
95-105 |
129-142 |
| 1
1/2-11 1/2 |
Plug-Pipe
(3/4 Taper) |
110-130 |
149-176 |
| 1
1/2-11 1/2 |
Plug-Pipe
(7/8 Taper) |
110-130 |
149-176 |
| 1/2-20 |
Plug-Fuel
Pump Relief Valve |
18-22 |
24-30 |
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| Series
53 Stud |
| Thread
Size (in.) |
Class & Application |
Torque Specifications |
| lb-ft |
N-m |
| 7/16-14 |
Stud-Exhaust Manifold |
25-40 |
34-54 |
| 9/16-18 |
Stud-Clutch
Fork Ball |
65-75 |
88-102 |
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