Detroit Diesel Series 53 Torque Specifications

June 9, 2023

	Detroit Diesel Series 53 Torque Specifications
Thread Size (in.)	Description	Torque Specifications
Thread Size (in.)	Description	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
1/4-28	Screw-Injector Rack Control Lever	2-3	3-4
5/16-18	Bolt-Oil Pan (Low Pan or Aluminum F/W Hsg. & 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
7/16-20	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
9/16-18	Stud-Clutch Fork Ball	65-75	88-102
5/8-11	Standard Torque Specification	137-147	186-199
5/8-11	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
3/4-16	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
7/16-14	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
9/16-12	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

	Detroit Diesel Series 53 Pipe Plug

Plug Size (in.)	Description	Torque Specifications
Plug Size (in.)	Description	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

	Detroit Diesel Series 53 Stud

Thread Size (in.)	Description	Torque Specifications
Thread Size (in.)	Description	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