Detroit Diesel Series 92 Torque Specifications

June 9, 2023

	Detroit Diesel Series 92 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
	Screw- Aftercooler Adaptor	8-10	11-14
	Bolt-Injector Control Shaft Bracket	10-17	14-23
	Bolt-Cam Follower Guide	12-16	16-22
1/4-28	Standard Torque Specification	9-10	130-163
1/4-28	Screw-Inj. Rack Control Lever	2-3	3-4
5/16-18	Standard Torque Specification	13-17	18-23
	Bolt Oil Pan (Low Pan or in Aluminum Flywheel Housing and Front Cover)	10-20	14-27
	Bolt-Blower Drive Assembly Thrust Collar	16-21	22-28
	Bolt-Hand Hole Cover (Air Box)	13-21	18-28
	Bolt-Oil Pan (Cast) – Hard Gasket	13-21	18-28
5/16-24	Standard Torque Specification	15-19	20-26
	Nut-Lock Push Rod	15-19	20-26
	Bolt-Blower Drive Plat to Gear	25-30	34-41
	Bolt-Blower Drive Coupling Rotor Gear	20-25	27-34
	Nut-Lock Vale Bridge Adj. Screw	20-25	27-34
3/8-16	Standard Torque Specification	30-35	41-47
	Bolt-Oil Pan	10-20	14-27
	Bolt-Rocker Cover Hold-Down Special 12-point	15-20	20-27
	Bolt-Air Inlet Housing to Blower	16-21	22-28
	Bolt-Injector Clamp	20-25	27-34
	Bolt-Side Angle Blower Mounting	30-35	41-47
	Bolt-Camshaft & Seal End Bearing	35-40	47-54
	Bolt-Flywheel Housing to Idler Gear and Dummy Hub (Place Type)	40-45	54-61
	Bolt-Trunnion to Block	40-45	54-61
3/8-24	Standard Torque Specification	35-39	47-53
	Nut-U Bolt Boost Cooler Clamp Assembly	8-8	11-11
	Nut-Fuel Jumper Line O Ring	13-17	18-23
	Nut-Fuel Jumper Line – Flared	11-13	15-18
	Nut-Flange Mounted Alternator Adaptor	15-20	20-27
	Screw-Lock-Cam Inter Bearing Outboard Bearing Split Block	15-20	20-27
	Nut-Injector Clamp	20-25	27-34
	Nut-Water Manifold	20-25	27-34
	Nut-Flywheel Hsg Small Hole Stud	20-25	27-34
	Nut-Exhaust Outlet Manifold Flange (Brass)	25-30	27-34
	Bolt-Lower Front Cover	25-30	34-41
	Bolt & Nuts-Blower Drive Assembly	25-30	34-41
	Nut-Plug Blower Drive Assembly and Flywheel Housing Plug Nuts	25-30	34-41
	Bolt-Flywheel Housing Small Hole Cover	30-35	41-47
	Bolt-Blower Drive Assembly Flex Plat to Hub	40-45	54-61
	Bolt-Accessory Drive to Balance Gear (Steel Disc)	45-50	61-68
	Bolt-Step-up Gear	50-60	68-81
	Bolt-Blower Drive Sprocket to Blower Rotor Gear	45-50	61-68
7/16-14	Standard Torque Specification	46-50	62-68
	Bolt-Tach. Drive Cover	30-35	41-47
	Bolt-Flywheel Housing Large Hole Cover	30-35	41-47
	Bolt-Blower End Plate	40-45	54-61
	Bolt-Crankshaft Outboard Main Bearing Support to Cover	70-75	95-102
7/16-20	Standard Torque Specification	57-61	77-83
	Nut-Connecting Rod	60-70	81-95
	Connector-Fuel (Steel Washer)	40-45	54-61
	Nut-Water Pump Impeller	45-50	61-68
	Bolt-Connecting Rod to Pin Crosshead Piston	55-60	75-81
	Nut-Connecting Rod	60-70	81-95
	Nut-Exhaust Manifold	30-35	41-47
	Bolt-Vibration Damper (8-V92)	75-85	102-115
1/2-13	Standard Torque Specification	71-75	96-102
	Stud-Alum Flywheel Housing W/50DN Alt	20-25	27-34
	Bolt-Tach. Drive Cover	30-35	41-47
	Bolt-Flywheel Housing Large Hole Cover	30-35	41-47
	Bolt-Idler Gear Hub and Dummy Hub	80-90	108-122
	Bolt-Rocker Shaft Bracket to Cyl Head	90-100	122-136
	Bolt-Flywheel Housing	90-100	122-136
	Bolt-Trunnion TOI Block	105-115	142-156
1/2-20	Standard Torque Specification	83-93	113-126
	Bolt-Blower Rotor Gear Retainer for Large Bearing Blower	100-110	136-149
	Bolt-Blower Rotor Gear Retainer	55-65	75-88
	Bolt-Fuel Pump Drive	55-65	75-88
9/16-12	Standard Torque Specification	90-100	122-136
9/16-18	Standard Torque Specification	107-117	145-159
	Bolt-Flywheel	140-150	190-203
	Bolt-Damper Hub to Crankshaft	155-165	210-224
	Bolt-Cam Gear R.B. (300M) Crankshaft	180-190	244-258
	Bolt-Flywheel	180-190	244-258
5/8-11	Standard Torque Specification	137-147	186-199
5/8-11	Bolt-Starter to Aluminum Flywheel Housing	95-105	129-142
5/8-18	Standard Torque Specification	168-178	228-241
	Bolt-Lube Oil Filter Center	50-60	68-81
	Bolt-Crankshaft Flange	130-140	176-190
	Nut-Alternator Pulley	70-80	95-108
	Nut-Special Self Locking Nut (10SI Alternator)	40-60	54-81
3/4-18	Nut Standard, Dipstick Tube	30-35	41-47
3/4-16	Standard Torque Specification	290-300	393-407
3/4-16	Nut-Accessory Drive Pulley	120-140	163-190
7/8-14	Standard Torque Specification	475-485	644-658
1-14	Bolt-Crankshaft End	290-310	393-420
	Bolt-Crankshaft End, Large head	450	610
	Bolt-Crankshaft End 1 1/2 HEX Head	440-460	597-624
11/16-11	Bolt-Cylinder Head	*	*
1 1/8-18	Nut-Cam and Balance Shaft	300-325	407-441
1 1/4-12	Front PTO Hub Nut	325-350	441-475
1 7/16-16	Nut-Blower Drive Gear Hub	50-60	68-81


	* Tighten all head bolts to 150 lb-ft (204 N-m). Loosen the first bolt in the sequence. Retighten to 100 lb-ft (136 N-m) turn 120 degrees. Move on to the next bolt in the sequence and repeat until all are torque-turned.


	Detroit Diesel Series 92 Pipe Plug Torque Specifications
Plug Size (in.)	Description	Torque Specifications
Plug Size (in.)	Description	lb-ft	N-m
1/2-20	Plug-Fuel Pump Relief Valve	18-22	24-30
1 1/4-16	Plug-Oil Filter Bypass Valve	95-105	129-142
1 1/2-6	Plug-Oil Filter Bypass Valve	110-130	149-176

	Detroit Diesel Series 92 Stud Torque Specifications

Thread Size (in.)	Description	Torque Specifications
Thread Size (in.)	Description	lb-ft	N-m
7/16-20	Stud-Standard	30-35	41-51
1/2-13	Stud-Aluminum Flywheel Housing W/50DN Alternator	20-25	27-36