Engine Mechanical - 6.6L (Unit Repair): Specifications

Fastener Tightening Specifications

Application	Specification
Application	Metric	English
A/C Compressor Bolt	50 N.m	37 lb ft
Bypass Pipe Bolt	21 N.m	15 lb ft
Camshaft Gear Bolt	234 N.m	173 lb ft
Camshaft Position Sensor Bolt	10 N.m	89 lb in
Camshaft Position Sensor Exciter Ring Bolt	9 N.m	80 lb in
Camshaft Thrust Plate Bolt	22 N.m	16 lb ft
Connecting Rod Cap Bolt - Angular Tightening Method	1st Step 64 N.m	1st Step 47 lb ft
	2nd Step 30 degrees	2nd Step 30 degrees
	3rd Step 30 degrees	3rd Step 30 degrees
Coolant Pipe to Water Pump Nut	25 N.m	18 lb ft
Cooling Fan Pulley	41 N.m	30 lb ft
Crankshaft Balancer Bolt	353 N.m	260 lb ft
Crankshaft Bearing Cap Bolt - Angular Tightening Method	1st Step 98 N.m	1st Step 72 lb ft
	2nd Step 132 N.m	2nd Step 97 lb ft
	3rd Step 30 degrees	3rd Step 30 degrees
Crankshaft Bearing Cap Side Bolt	78 N.m	58 lb ft
Crankshaft Position Sensor Bolt	10 N.m	89 lb in
Crankshaft Position Sensor Spacer Bolt	10 N.m	89 lb in
Cylinder Head M12 Bolt - Angular Tightening Method	1st Step 50 N.m	1st Step 37 lb ft
	2nd Step 80 N.m	2nd Step 59 lb ft
	3rd Step 60 degrees	3rd Step 60 degrees
	4th Step 60 Degrees	4th Step 60 degrees
Cylinder Head M8 Bolt	25 N.m	18 lb ft
Drive Belt Tensioner Pulley Bolt	41 N.m	30 lb ft
EGR Bolt - California Emissions	20 N.m	15 lb ft
EGR Bracket Bolt - California Emissions	20 N.m	15 lb ft
EGR Valve Nut - California Emissions	19 N.m	14 lb ft
Engine Block Coolant Plug	18 N.m	13 lb ft
Engine Block Ground Bolt	34 N.m	25 lb ft
Engine Mount to Block Bolts	58 N.m	43 lb ft
Exhaust Manifold Bolt/Nut	38 N.m	28 lb ft
Exhaust Manifold Heat Shield Bolts	8 N.m	71 lb in
Exhaust Outlet Heat Shield Bolts	8 N.m	71 lb in
Exhaust Outlet Pipe Bolt	53 N.m	39 lb ft
Exhaust Pipe Bolt	53 N.m	39 lb ft
Exhaust Pipe Bracket Bolt	34 N.m	25 lb ft
Exhaust Pipe Heat Shield Bolts	8 N.m	71 lb in
Fan Pulley Bracket Bolt	46 N.m	34 lb ft
Flywheel Bolt - Angular Tightening Method	1st Step 79 N.m	1st Step 58 lb ft
	2nd Step 60 degrees	2nd Step 60 degrees
	3rd Step 60 degrees	3rd Step 60 degrees
Flywheel Housing Bolt - Black Circle Mark	90 N.m	67 lb ft
Flywheel Housing to Upper Oil Pan Bolt - Black Triangle Mark	50 N.m	37 lb ft
Front Engine Cover Bolt	21 N.m	15 lb ft
Fuel Block Bolt	25 N.m	18 lb ft
Fuel Filter Bracket Bolt	21 N.m	15 lb ft
Fuel Injection Control Module Bolt	20 N.m	15 lb ft
Fuel Injection Control Module Bracket Bolt	21 N.m	15 lb ft
Fuel Injection Control Module Connector Bolt	10 N.m	89 lb in
Fuel Injection Control Module Connector Bracket Bolt	21 N.m	15 lb ft
Fuel Injection Control Module Cooler Eye Bolt	27 N.m	20 lb ft
Fuel Injection Pipe Nut	41 N.m	30 lb ft
Fuel Inlet Pipe Bracket Bolt	21 N.m	15 lb ft
Fuel Pipes Bracket Bolt	25 N.m	18 lb ft
Fuel Rail Assembly Bolt	25 N.m	18 lb ft
Fuel Rail Connector	45 N.m	33 lb ft
Fuel Return Pipe Eye Bolt - Cylinder Head Side	17 N.m	12 lb ft
Fuel Return Pipe Eye Bolt - Injector Side	16 N.m	12 lb ft
Fuel Return Pipe Sleeve Nut	41 N.m	30 lb ft
Fuel Return Sleeve Unit	41 N.m	30 lb ft
Fuel Injection Pump Assembly to Cylinder Block Bolt	21 N.m	15 lb ft
Fuel Injection Pump to Bracket Bolt	21 N.m	15 lb ft
Fuel Injection Pump Drive Gear Nut	70 N.m	52 lb ft
Fuel Temperature Sensor Eye Bolt	15 N.m	11 lb ft
Function Block Nut	25 N.m	18 lb ft
Function Block to Injection Pipe Nut	41 N.m	30 lb ft
Generator Bracket Bolt	50 N.m	37 lb ft
Glow Plug	18 N.m	13 lb ft
Glow Plug Connector Nut	2 N.m	18 lb in
Glow Plug Power Feed Nut	15 N.m	11 lb ft
Glow Plug Relay Assembly Bolt	25 N.m	18 lb ft
Heater Pipe Bolt	21 N.m	15 lb ft
Idle Pulley Bolt/Screw	37 N.m	27 lb ft
Injector Bracket Bolt	50 N.m	37 lb ft
Injector Harness Bracket Bolt	9 N.m	80 lb in
Injector Terminal Nut	2 N.m	18 lb in
Injector Pipe Lock Plate Screws	4 N.m	35 lb in
Intake Air Heater	50 N.m	37 lb ft
Intake Manifold Bolts/Nuts	21 N.m	15 lb ft
Intake Manifold Tube Bolts/Nuts	9 N.m	80 lb in
Oil Cooler Adapter Bolts	21 N.m	15 lb ft
Oil Cooler Adapter Nuts	25 N.m	18 lb ft
Oil Cooler Assembly Bolts	25 N.m	18 lb ft
Oil Cooler Adapter Stud	10 N.m	89 lb in
Oil Drain Plug	84 N.m	62 lb ft
Oil Fill Tube Bolt	21 N.m	15 lb ft
Oil Filter	24 N.m	18 lb ft
Oil Gallery Plugs	53 N.m	39 lb ft
Oil Level Indicator Tube Bolt	21 N.m	15 lb ft
Oil Level Sensor Bolt	10 N.m	89 lb in
Oil Pan Bolts/Nuts - Lower	10 N.m	89 lb in
Oil Pan Bolt - Upper	20 N.m	15 lb ft
Oil Pressure Sensor Adapter Eye Bolt	38 N.m	28 lb ft
Oil Pressure Sensor Unit	30 N.m	22 lb ft
Oil Pressure Relief Valve	39 N.m	29 lb ft
Oil Pump Bolt	21 N.m	15 lb ft
Oil Pump Driven Gear Nut	100 N.m	74 lb ft
Oil Pump Gear Cover Bolt	21 N.m	15 lb ft
Oil Strainer Bolts/Nuts	25 N.m	18 lb ft
Piston Cooling Nozzle Eye Bolt	21 N.m	15 lb ft
Positive Crankcase Ventilation Cover Screws	4 N.m	35 lb in
Power Steering Pump Bolt	50 N.m	37 lb ft
Power Steering Pump Bracket Bolt	46 N.m	34 lb ft
Rocker Arm Shaft Bracket Bolt	41 N.m	30 lb ft
Starter Motor Bolt	78 N.m	58 lb ft
Thermostat Housing Bolts/Nuts	25 N.m	18 lb ft
Thermostat Cover Bolt	21 N.m	15 lb ft
Turbocharger Bolt	108 N.m	80 lb ft
Turbocharger Boost Sensor Bolt	10 N.m	89 lb in
Turbocharger Coolant Outlet Pipe Bracket Bolts	21 N.m	15 lb ft
Turbocharger Heat Shield Bolts	9 N.m	80 lb in
Turbocharger Inlet Duct to Turbocharger Bolt	9 N.m	80 lb in
Turbocharger Oil Return Pipe Stud	10 N.m	89 lb in
Turbocharger Oil Supply Hose Eye Bolt	34 N.m	25 lb ft
Turbocharger Oil Return Pipe Bolts/Nuts	21 N.m	15 lb ft
Turbocharger Thermostatic Coolant Valve	60 N.m	44 lb f
Upper Oil Pan to Flywheel Housing Screws	20 N.m	15 lb ft
Vacuum Pump Nuts - California Emissions	22 N.m	16 lb ft
Valve Adjusting Screw Nut	22 N.m	16 lb ft
Valve Lifter Holdown Bracket Bolt	11 N.m	97 lb in
Valve Rocker Arm Cover Bolt - Lower	10 N.m	89 lb in
Valve Rocker Arm Cover Bolt - Upper	8 N.m (Two Times)	71 lb in (Two Times)
Water Outlet Bolts	25 N.m	18 lb ft
Water Pump Bolt	21 N.m	15 lb ft

FASTENER TIGHTENING SPECIFICATIONS

Engine Mechanical Specifications

Application		Specification
Application		Metric	English
General
	Engine Type	90 degree V-8
	Displacement	6.6 Liter	402 cu in
	Idle Speed	680 RPM
	Cylinder Block Material	Gray Iron
	Compression Ratio	17.5
	Compression Pressure - Production	3158 KPa	458 psi
	Bore	103 mm	4.0551 in
	Stroke	99 mm	3.8976 in
	Upper Oil Pan Material	Aluminum
	Cylinder Head Material	Aluminum
	Valve Arrangement	4 Valves
	Valve Seat Inserts	Yes
	Head to Block Attachmen	6 Bolts/Cylinder
	Stroke Cycle	Four Stroke
	Ignition Method	Compression
	Fuel Injection	High Pressurized Direct Injection
	Maximum Pressure	160 MPa
	Intake Manifold Material	Cast Aluminum
	Exhaust Manifold Material	Cast Nodular Iron & Steel Pipe
	Air Intake System	Turbocharged, Charge Air Cooled
	Engine Mounting	Three Point with Transmission
	Firing Order	1-2-7-8-4-5-6-3
	Crankcase Ventilation	Open PCV
	Cylinder Liner	None
	Start Aid	Glow Plug
Starter Motor
	Type	Torque Reduction
Manufacturer Hitachi
	Rated Output	3.5 KW
Camshaft
	End Play - Production Valve	0.050-0.114 mm	0.0020-0.0045 in
	End Play - Service Limit	0.2 mm	0.0079 in
	Number Furnished	1
	Bearing Material	Steel Backed Pb-Sn-Cu Alloy
	Number of Bearings	5
	Camshaft Drive Type	Gears
	Material	Steel
	Journal Diameter - Service Limit	60.92 mm	2.3984 in
	Journal Diameter - Production Value	60.932-60.962 mm	2.3990-2.4001 in
	Camshaft Bearing Inside Diameter - Service Limit	61.07 mm	2.4043 in
	Camshaft Bearing Inside Diameter - Production Value	61.00-61.03 mm	2.4016-2.4028 in
	Lobe Lift (Exhaust) - Production Value	5.907 mm	0.2326 in
	Lobe Lift (Intake) - Production Value	7.273 mm	0.2863 in
	Runout - Service Limit	0.05 mm	0.0020 in
Roller Lifter and Push Rod
	Roller Lifter Roller Projection - Service Limit	0.9 mm	0.0354 in
	Roller Lifter Roller Projection - Production Value	0.989-1.0 mm	0.0389-0.0394 in
	Push Rod Bent Condition - Service Limit	Less Than 0.8 mm	Less Than 0.0315 in
Connecting Rods
	Type & Material	Forged Steel Fracture Split
	Length Center to Center	163.0 mm	6.42 in
	Piston Pin Bushing	Steel Backed Pb-Sn-Cu Alloy
	Lower End Rod Bearing Type	Straight Split
	Make	Steel Backed Pb-Sn-In Overlay
	Connecting Rod Bearing Clearance - Service Limits	0.10 mm	0.0039 in
	Connecting Rod Bearing Clearance - Production Value	0.036-0.077 mm	0.0014-0.0030 in
	Connecting Rod Side Clearance - Service Limits	0.54 mm	0.0213 in
	Connecting Rod Side Clearance - Production Value	0.31-0.49 mm	0.0122-0.0193 in
	Connecting Rod Bearing Inside Diameter - Production Value	62.958-62.979 mm	2.4789-2.4795 in
	Small End Inside Diameter - Service Limits	34.53 mm	1.3594 in
	Small End Inside Diameter - Production Value	34.512-34.522 mm	1.3587-1.3591 in
	Small End Bearing Clearance - Service Limits	0.08 mm	0.0031 in
	Small End Bearing Clearance - Production Value	0.012-0.027 mm	0.0005-0.0011 in
Crankshaft
	Material	Forged Steel
	Heat Treatment	Nitrided
	Main Journal Diameters	80.0 mm	3.15 in
	Crankpin Diameter	63.0 mm	2.48 in
	Harmonic Balancer	Rubber Damper
	Flywheel Material	Cast Iron
	Main Bearing Type	Steel Backed Pb-Sn-Cu Overlay
	Number of Bearings	5
	End Thrust Taken By	Crank Thrust Bearing
	Total Bearing Length	103.5 mm	4.07 in
	Total Projected Area	13,006 mm 2	20.16 in 2
	Crankshaft Bearing Clearance - Service Limits	0.014 mm	0.0055 in
	Crankshaft Bearing Clearance - Production Value	0.037-0.072 mm	0.0015-0.0028 in
	Crankshaft End Play - Service Limits	0.54 mm	0.0213 in
	Crankshaft End Play - Production Value	0.04-0.205 mm	0.0016-0.0081 in
	Crankshaft Journal Diameter - Main - Service Limits	79.89 mm	3.1453 in
	Crankshaft Journal Diameter - Main - Production Value	79.905-79.925 mm	3.1459-3.1466 in
	Crankshaft Runout - Service Limits	0.44 mm	0.0173 in
	Crankshaft Runout - Production Value	0.05 mm	0.0020 in
	Crankpin Diameter - Service Limits	62.88 mm	2.4756 in
	Crankpin Diameter - Production Value	62.902-62.922 mm	2.4764-2.4772 in
Cylinder Bore
	Diameter - Service Limits	103.11 mm	4.0594 in
	Diameter - Production Value	103.0-103.014 mm	4.0551-4.0557 in
	Bore Taper - Production Value	0.015 mm	0.0006 in
	Bore Out of Round - Production Value	0.015 mm	0.0006 in
Cylinder Head
	Surface Flatness - Cyl. Block Side - Service Limits	0.2 mm	0.0079 in
	Surface Flatness - Cyl. Block Side - Production Value	0.075 mm	0.0030 in
	Surface Flatness - Exhaust Side - Production Value	0.1 mm	0.0039 in
	Surface Flatness - Intake Side - Production Value	0.1 mm	0.0039 in
Exhaust Manifold
	Surface Flatness - Production Value	0.3 mm	0.0118 in
Intake Manifold
	Surface Flatness - Production Value	0.3 mm	0.0118 in
Oil Pump
	Gear Teeth to Housing Clearance - Service Limit	0.22 mm	0.0087 in
	Gear Teeth to Housing Clearance - Production Value	0.125-0.221 mm	0.0049-0.0087 in
	Gear to Cover Clearance - Service Limit	0.109 mm	0.0043 in
	Gear to Cover Clearance - Production Value	0.064-0.109 mm	0.0025-0.0043 in
	Gear Shaft to Bushing - Service Limit Clearance	0.14 mm	0.0055 in
	Drive Gear Shaft Outside Diameter - Service Limit	19.86 mm	0.7819 in
	Drive Gear Shaft Outside Diameter - Production Value	19.947-19.960 mm	0.7853-0.7858 in
	Driven Gear Shaft Outside Diameter - Service Limit	19.86 mm	0.7819 in
	Driven Gear Shaft Outside Diameter - Production Value	19.947-19.960 mm	0.7853-0.7858 in
Pistons
	Type	1 Piece
	Material	Aluminum
	Skirt	Antiscuff/Barrel Shaped
	Head	Ni-resist Insert for Top Ring Groove
	Coolant	Oil Cooling Channel
	Piston Pin Type	Hollow
	Material	Steel
	Diameter	34.5 mm	1.36 in
	Retention Method	Snap Ring
	Piston Rings Number	3
	Top Compression Ring Type	Keystone Ring
	Top Compression Ring Material	Steel
	2nd Compression Ring Type	Positive Twist/Inner Cut
	2nd Compression Ring Material	Cast Iron
	Oil Control Ring Type	Bevel-Edged Oil Control Ring
	Oil Control Ring Material	Steel
	Piston to Small End Clearance - Production Value	5 mm	0.1969 in
	Piston Outside Diameter - At 22 mm from Piston Bottom - Production Value	102.948-102.960 mm	4.0531-4.0535 in
	Bore Inside Diameter for Piston Pin - Production Value	34.504-34.512 mm	1.3584-1.3587 in
Piston Pins
	Clearance in Piston - Service Limit	0.017 mm	0.0007 in
	Clearance in Piston - Production Value	0.004-0.017 mm	0.0002-0.0007 in
	Pin Diameter - Service Limit	34.45 mm	1.3563 in
	Pin Diameter - Production Value	34.495-34.5 mm	1.3581-1.3583 in
Piston Rings
	Compression Ring Gap - Service Limit	1.37 mm	0.0539 in
	Compression Ring Gap - Production Value	0.3-0.45 mm	0.0118-0.0177 in
	2nd Ring Gap - Service Limit	1.35 mm	0.0531 in
	2nd Ring Gap - Production Value	0.50-0.65 mm	0.0197-0.0256 in
	Oil Ring Gap - Service Limit	1.20 mm	0.0472 in
	Oil Ring Gap - Production Value	0.15-0.35 mm	0.0059-0.0138 in
Piston Ring Groove Clearance
	Compression Ring - Service Limit	0.26 mm	0.0102 in
	Compression Ring - Production Value	0.08-0.17 mm	0.0030-0.0067 in
	2nd Ring - Service Limit	0.10 mm	0.0039 in
	2nd Ring - Production Value	0.01-0.03 mm	0.0004-0.0012 in
	Oil Ring - Service Limit	0.12 mm	0.0047 in
	Oil Ring - Production Value	0.01-0.03 mm	0.0004-0.0012 in
Rocker Arms
	Rocker Arm Shaft Outside Diameter - Service Limit	21.85 mm	0.8602 in
	Rocker Arm Shaft Outside Diameter - Production Value	21.979-22.000 mm	0.8653-0.8661 in
	Rocker Arm Inside Diameter - Production Value	22.010-22.035 mm	0.8665-0.8675 in
	Rocker Arm Shaft and Arm Clearance - Service Limit	0.20 mm	0.0079 in
	Rocker Arm Shaft and Arm Clearance - Production Value	0.010-0.056 mm	0.0004-0.0022 in
Valve Operating Mechanism
	Type	Overhead Valve
	Valve Guide Material	Iron
	Valve Guide Type	Replaceable
	Lifter Type	Roller
	Rocker Arm Ratio	1.36:1 (Inlet), 1.69:1 (Exhaust)
	Rocker Arm Type	Conventional
	Rocker Arm Material	Forged
	Rocker Arms Shaft Support	Aluminum Die Casting
	Rocker Arm Shaft Material	Steel
Valves, Intake
	Type	Double
	Material	Silicon Steel
	Number Per Cylinder	2
	Rotation	None
	Seat Insert Material	Sintered Steel
	Seat Angle - degrees	45 degrees from Vertical
	Head Diameter - in	33 mm	1.30 in
	Stem Diameter - in	7 mm	0.28 in
	Lift - in	9.55 mm	0.376 in
	Clearance - Cold - in	0.3 mm	0.012 in
Valves, Exhaust
	Type	Double
	Material	Silicon Steel
	Number Per Cylinder	2
	Rotation	None
	Seat Angle	45 degrees from Vertical
	Seat Insert Material	Sintered Steel
	Head Diameter - in	31 mm	1.22 in
	Stern Diameter - in	7 mm	0.28 in
	Lift - in	9.62 mm	0.379 in
Valve System
	Valve Face Angle - Production Value	45 degrees
Valve Margin - Production Value
	Intake	1.2 mm	0.0472 in
	Exhaust	1.0 mm	0.0394 in
Valve Margin - Service Limit
	Intake	0.88 mm	0.0346 in
	Exhaust	0.73 mm	0.0287 in
	Valve Clearance - Production Value	0.3 mm	0.0118 in
	Valve Guide Inside Diameter - Intake - Service Limit	7.09 mm	0.2791 in
	Valve Guide Inside Diameter - Intake - Production Value	7.000-7.015 mm	0.2755-0.2762 in
	Valve Guide Inside Diameter - Exhaust - Service Limit	7.16 mm	0.2819 in
	Valve Guide Inside Diameter - Exhaust - Production Value	7.000-7.015 mm	0.2755-0.2762 in
	Valve Depression - Exhaust - Service Limit	2 mm	0.0787 in
	Valve Depression - Exhaust - Production Value	0.9 mm	0.0354 in
	Valve Depression - Intake - Service Limit	2.5 mm	0.0984 in
	Valve Depression - Intake - Production Valve	0.6 mm	0.0236 in
	Valve Rocker Arm Ratio - Exhaust	1.69:1
	Valve Rocker Arm Ratio - Intake	1.36:1
	Valve Seat Angle - Production Value	45 degrees
	Valve Contact Width - Exhaust - Service Limit	2.5 mm	0.0984 in
	Valve Contact Width - Exhaust - Production Value	2.1 mm	0.0827 in
	Valve Contact Width - Intake - Service Limit	2.5 mm	0.0984 in
	Valve Contact Width - Intake - Production Value	2.1 mm	0.0827 in
	Valve Spring Free Length - Production Value	56.6 mm	2.2283 in
	Valve Spring Squareness - Service Limit	2.0 mm	0.0787 in
	Valve Spring Installed Height - Exhaust - Production Value	41 mm	1.6142 in
	Valve Spring Installed Height - Intake - Production Value	41 mm	1.6142 in
	Valve Spring Tension - Exhaust - Service Limit	275 N at 41 mm	61.8 lb at 1.61 in
	Valve Spring Tension - Exhaust - Production Value	315-363 N at 41 mm	71.0-81.6 lb at 1.61 in
	Valve Spring Tension - Intake - Service Limit	306 N at 41 mm	68.8 lb at 1.61 in
	Valve Spring Tension - Intake - Production Value	315-363 N at 41 mm	71.0-81.6 lb at 1.61 in
	Valve Stem Outside Diameter - Intake - Service Limit	6.89 mm	0.2713 in
	Valve Stem Outside Diameter - Intake - Production Value	6.952-6.970 mm	0.2737-0.2744 in
	Valve Stem Outside Diameter - Exhaust - Service Limit	6.91 mm	0.2720 in
	Valve Stem Outside Diameter - Exhaust - Production Value	6.942-6.962 mm	0.2734-0.2741 in
	Valve Stem Clearance - Exhaust - Service Limit	0.20 mm	0.0079 in
	Valve Stem Clearance - Exhaust - Production Value	0.038-0.071 mm	0.0015-0.0028 in
	Valve Stem Clearance - Intake - Service Limit	0.20 mm	0.0079 in
	Valve Stem Clearance - Intake - Production Value	0.030-0.063 mm	0.0012-0.0025 in
	Valve Stem Seal Installed Height - Measured from the Top of the Cylinder Head to the Bottom of the Valve Stem Seal - Production Value	6.05 mm	0.2382 in
Cooling
	Water Pump Type	Centrifugal
	Capacity @ Engine RPM	270 L/min @ 3172 RPM
	Pump Bearing Type	Shaft Bearing
	Thermostat Type	Wax Pellet
	Number of Thermostats	2
	Drive System	Gear
Valve Opening Temperature
	Thermostat 1	82°C	180°F
	Thermostat 2 - Jiggle Valve	85°C	185°F
	Full Open Temperature	110°C	230°F
	Turbocharger Coolant Bypass Valve	60°C	140°F
Lubrication
	Type - Main Connecting Rod, Camshaft Bearings, Rocker Arms and Rocker Arm Shaft	Pressurized
	Type - Camshaft Lobes, Connecting Rod Bushings, Valve Lifters, Piston Pins, Timing Gear and Cylinder Walls	Splash
	Oil Pump, Type	Gear
	Oil Pressure-HOT-at Idle	98 kPa	14 psi
	Oil Capacity-w/Filter Change	10 qt, 9.5 L
	Oil Capacity-w/o Filter Change	9.2 qt, 8.7 L
	Oil Filter Type	Full-Flow Throwaway Type
	Oil Intake	Suction Bell, Front Sump
	Oil Seal	Axial Type
	Oil Cooler	Water Cooled Corrugated Fin
	Oil Relief Valve Opening Pressure	441 kPa	64 psi
	Piston Cooling Jet Valve Opening Pressure	196 kPa	29 psi
Air Intake System
	Turbocharger	Yes
	Turbo Boost	18 psi @ Peak Torque
	Charge Air Cooler	Charge Air Cooled
	Air Cleaner	Panel Element A1300 or A1306C for HD Usage
Fuel System
	Lift Pump	Gear Type, Integral
	Injector Pump, Pump Model	Bosch
	Type	Common Rail
	Drive	Gear
	Fuel Filter	Number Used = 1
	Type	Full Flow, Paper Element
	Location	Left Hand Side of Engine
	Fuel Shut-Off	Electronic
	Fuel Injector Type	Electronic Injector
	Timing Advance	Programmed
Turbocharger
	Axial Play - maximum	0.11 mm	0.0043 in
	Manufacturer	Ishikawajima Harima Industries
	Model	RHG6
	Radial Play - maximum	0.20 mm	0.0079 in

ENGINE MECHANICAL SPECIFICATIONS

Scheme 796

Scheme 796: Connecting Rod Bearings Selection Specifications

Scheme 797

Scheme 797: Cylinder Head Gasket Selection Specifications

Scheme 798

Scheme 798: Crankshaft Bearings Selection Specifications

Scheme 799

Scheme 799: Valve Clearance Adjustment Specifications

Scheme 800

Scheme 800: Sealers, Adhesives & Lubricants

Scheme 801

Scheme 801: Cylinder Head - Exhaust Port View

Scheme 802

Scheme 803

Scheme 803: Cylinder Head - Intake Port View

Scheme 804

Scheme 805

Scheme 805: Cylinder Head - Top View

Scheme 806

Scheme 807

Scheme 808

Scheme 808: Cylinder Head - Back View

Scheme 809

Scheme 810

Scheme 810: Cylinder Head - Front View

Scheme 811

Scheme 812

Scheme 812: Disassembled Views

Scheme 813

Scheme 814

Scheme 815

Scheme 816

Scheme 817

Scheme 818

Scheme 819

Scheme 820

Scheme 821

Scheme 822

Scheme 823

Scheme 823: Engine Identification

The engine identification tag is located on the left side of the block. It is on the front edge of the block, directly above the oil pressure sending unit.

Scheme 824

Scheme 824: Draining Fluids & Oil Filter Removal

Scheme 825

Scheme 826

Drain the fuel from the fuel filter. 1.1. Attach drain tube to fuel filter drain tap. 1.2. Place open end of drain tube into a suitable container. 1.3. Open fuel filter drain, and allow fuel to drain. 1.4. Close fuel filter drain. 1.5. Remove drain tube. 1.6. Properly dispose of used fuel.
Remove the oil drain plug and gasket, and allow engine oil to drain.
Discard the oil drain plug gasket.
Remove the oil filter.
Remove the engine block coolant plugs, and allow coolant to drain.

Scheme 827

Scheme 827: Starter Motor Removal

Remove the starter motor bolts.
Remove the starter motor assembly.

Fuel Line Torque Procedure

The torque of a fuel line fitting is critical to prevent fuel leaks in a high pressure direct injection fuel system.

The preferred method is through the use of a flare nut socket. With the use of a flare nut socket, the torque wrench can be set to the listed torque specification.

Refer to Fastener Tightening Specifications .

If a crows foot is used to torque the fuel lines, then special attention to the position of the crows foot in relation to the torque wrench is required.

If the crows foot is kept perpendicular (90 degrees) to the torque wrench during the entire tightening procedure, then the torque wrench can be set to the listed torque specification. Refer to «Fastener Tightening Specifications»(ref-176272-S18503592122005050400000) .
If the crows foot is positioned straight with the torque wrench, then the torque setting needs to be corrected to compensate for the increased leverage.
If the crows foot is held at any position other than 90 degrees or in-line to the wrench, more complex corrections of the torque setting are required, and therefore, positioning the crows foot in this manner is not recommended. If it is necessary to position a crows foot in line with the torque wrench, the procedure for adjusting the torque specification is as follows

Scheme 828

Scheme 829

Measure the distance between the center of the crows foot wrench end to the center of the square drive hole.
Measure the length of the torque wrench from the center of the square drive to the center of the handle.
Divide the measurement of the crows foot length by the torque wrench length. This figure is the percentage of additional torque, over the torque wrench setting, that will be applied to the fitting.
Subtract the results of step 3 from the number 1. This figure is the percentage of the listed torque specification that the torque wrench should be set to.
Multiply the results of step 4 by the listed torque setting. Refer to «Fastener Tightening Specifications»(ref-176272-S18503592122005050400000) . This figure is the proper setting the torque wrench should be set at when using a crows foot in line with the torque wrench.

Example

Crows foot measurement = 25 mm (1.0 in)
Torque wrench measurement = 355 mm (14.0 in)
25 mm / 355 mm (1.0 in / 14.0 in) = 0.07, or 7 %
1 - 0.07 = 0.93, or 93 %
0.93 x 41 N.m (30 ft lbs) = 38 N.m (28 ft lbs)

Engine Mechanical - 6.6L (Unit Repair): Specifications GMC Sierra 2500