Contents Wiring diagrams Section: Mechanical All sections

Engine Mechanical - 6.6l (Lgh) - Specifications Chevrolet Express G3500

Mechanical 8 illustrations

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
A/C Compressor Bolt5037 lb ft
Air Cleaner Outlet Duct Clamp871 lb in
Air Conditioning Compressor/Power Steering Pump Bracket Bolt5037 lb ft
Air Inlet Tube Nut2518 lb ft
Battery Cable Bracket Bolt12106 lb in
Battery Cable Bracket Nut871 lb in
Bypass Pipe Bolt2518 lb ft
Camshaft Gear Bolt234173 lb ft
Camshaft Position Sensor Bolt762 lb in
Camshaft Position Sensor Exciter Ring Bolt12106 lb in
Camshaft Thrust Plate Bolt2216 lb ft
CDR Assembly Bolt1089 lb in
Charged Air Cooler Bolt2115 lb ft
Charged Air Cooler Clamp - Outlet Duct at Charged Air Cooler12106 lb in
Charged Air Cooler Clamps - Inlet and Outlet Ducts, except for the Outlet Duct at Charged Air Cooler871 lb in
Charge Air Temperature Sensor1914 lb ft
Connecting Rod Cap Bolt - Angular Tightening Method1st Step 64 (1)1st Step 47 lb ft (1)
2nd Step 30 degrees2nd Step 30 degrees
3rd Step 30 degrees3rd Step 30 degrees
Coolant Pipe Bolt and Nut2518 lb ft
Coolant Tube to Water Pump Nut2518 lb ft
Cooling Fan Pulley Bolt/Nut5037 lb ft
Cooling Fan Pulley Stud2015 lb ft
Crankshaft Balancer Bolt1st Step 100 (1)1st Step 74 lb ft (1)
2nd Step 90 degrees2nd Step 90 degrees
Crankshaft Bearing Cap Bolt1st Step 98 (1)1st Step 72 lb ft (1)
2nd Step 1322nd Step 97 lb ft
3rd Step 60 degrees3rd Step 60 degrees
Crankshaft Bearing Cap Side Bolt7052 lb ft
Crankshaft Position Sensor Bolt762 lb in
Crankshaft Position Sensor Exciter Ring Bolt980 lb in
Crankshaft Position Sensor Spacer Bolt1089 lb in
Crossmember Bolt10074 lb ft
Cylinder Head M12 Bolt - Angular Tightening Method1st Step 50 (1)1st Step 37 lb ft (1)
2nd Step 802nd Step 59 lb ft
3rd Step 60 degrees
4th Step 60 degrees
Cylinder Head M8 Bolt2518 lb ft
Drive Belt Idler Pulley Bolt5037 lb ft
Drive Belt Tensioner Pulley Bolt5037 lb ft
EGR to EGR Cooler Bolt2518 lb ft
EGR Bracket Bolt - Front2518 lb ft
EGR Bracket Bolt - Rear5037 lb ft
EGR Bracket to Cooler Bolt2518 lb ft
EGR Bypass Pipe Bolt2518 lb ft
EGR Bypass Valve Bolt5339 lb ft
EGR Manifold Cooling Feed Pipe Bolt2518 lb ft
EGR Sensor4432 lb ft
EGR Valve Temperature Sensor4432 lb ft
Electrical Harness Bracket Bolt1089 lb in
Engine Block Coolant Plug1813 lb ft
Engine Block Ground Bolt3425 lb ft
Engine Fuel Vacuum Switch2518 lb ft
Engine Fuel Vacuum Switch Bracket Bolts2518 lb ft
Engine Mount to Block Bolts5037 lb ft
Engine Mount to Frame Bolt7052 lb ft
Engine Shield Bolt2015 lb ft
Exhaust Adapter Heat Shield Bolt1089 lb in
Exhaust Adapter to Right Exhaust Pipe Bracket Bolt3425 lb ft
Exhaust Heat Shield Nut1089 lb in
Exhaust Manifold Bolt/Nut5742 lb ft
Exhaust Manifold Heat Shield Bolts1089 lb in
Exhaust Manifold Stud1089 lb in
Exhaust Outlet Adapter Clamp1089 lb in
Exhaust Outlet Heat Shield Bolts1089 lb in
Exhaust Pipe Bracket Nut5339 lb ft
Exhaust Pipe Clamp5339 lb ft
Exhaust Pipe to EGR Cooler Bolt2518 lb ft
Exhaust Pipe to EGR Cooler Nuts2518 lb ft
Exhaust Pipe to Exhaust Manifold/Turbocharger Bolt5339 lb ft
Exhaust Pipe Heat Shield Bolts653 lb in
Exhaust Temperature Sensor1914 lb ft
Fan Pulley Bracket Bolt5037 lb ft
Flywheel Bolt - Angular Tightening Method1st Step 80 (1)1st Step 59 lb ft (1)
2nd Step 60 degrees2nd Step 60 degrees
3rd Step 60 degrees3rd Step 60 degrees
Flywheel Housing to Block Bolt9570 lb ft
Flywheel Housing to Upper Oil Pan Bolt5037 lb ft
Front Engine Cover Bolt2518 lb ft
Fuel Feed Hose Bolt2518 lb ft
Fuel Feed Hose Eye Bolt1089 lb in
Fuel Feed Manifold Bolt2518 lb ft
Fuel Feed Pipe Bolt1089 lb in
Fuel Feed Pipe Clip Bracket Bolt2518 lb ft
Fuel Feed Pipe Nut2518 lb ft
Fuel Filter Bracket Bolt3022 lb ft
Fuel Injection Pipe Nut3022 lb ft
Fuel Injector Bracket Bolt3022 lb ft
Fuel Injector Pipe Bolt1089 lb in
Fuel Inlet Pipe Bracket Bolt2115 lb ft
Fuel Injection Pump Assembly to Cylinder Block Bolt2518 lb ft
Fuel Injection Pump to Adapter Bolts - M8First Pass 8 (1)71 lb in (1)
Final Pass 2518 lb ft
Fuel Injection Pump to Adapter Bolt - M6First Pass 4 (1)35 lb in (1)
Final Pass 1511 lb ft
Fuel Injection Pump Gear Nut78 (1)58 lb ft (1)
Fuel Line Bracket Nut2115 lb ft
Fuel Pipes Bracket Bolt2518 lb ft
Fuel Pressure Relief ValveFirst Pass 6044 lb ft
Second Pass Loosen 90 Degrees
Final Pass 8563 lb ft
Fuel Temperature Sensor2216 lb ft
Fuel Rail Assembly Bolt2518 lb ft
Fuel Rail Balance Pipe Bolt2115 lb ft
Fuel Rail Pressure Sensor7052 lb ft
Fuel Return Pipe Nut2518 lb ft
Generator Bracket Bolt and Nut5037 lb ft
Generator Bracket Stud1089 lb in
Generator Positive Cable Nut980 lb in
Glow Plug1813 lb ft
Glow Plug Controller Bolt1089 lb in
Glow Plug Harness Bracket Bolt1089 lb in
Glow Plug Nut218 lb in
Glow Plug Power Feed Nut1511 lb ft
Glow Plug Relay Assembly Bolt1089 lb in
Heater Outlet Pipe Bolt2518 lb ft
Heater Pipe Bolt2518 lb ft
High Pressure Fuel Rail Crossover Pipe Nut3022 lb ft
High Pressure Fuel Rail Pipe Bolt1089 lb in
High Pressure Fuel Rail Pipe Nut - Fuel Rail Side3022 lb ft
High Pressure Fuel Rail Pipe Nut - High Pressure Pump Side3828 lb ft
Hood Hinge Bolt2518 b ft
Idle Pulley Bolt5037 lb ft
Indirect Fuel Injector4533 lb ft
Indirect Fuel Injector Feed Pipe Bracket Bolt2518 lb ft
Indirect Fuel Injector Feed Pipe Clip Bolts1089 lb in
Indirect Fuel Injector Feed Pipe Eye Bolt1089 lb in
Intake Manifold Bolts/Nuts-Lower2518 lb ft
Intake Manifold - Center Bolts/Nuts1089 lb in
Intake Manifold Brace Bolt - Upper2518 lb ft
Intake Manifold Heat Shield Bolt2518 lb ft
Intake Manifold Stud653 lb in
Intake Manifold Tube Bolt2518 lb ft
MAP Sensor Bolt1089 lb in
NOx Sensor4533 lb ft
Oil Cooler Adapter Bolts2518 lb ft
Oil Cooler Adapter Nuts2518 lb ft
Oil Cooler Assembly Bolts2518 lb ft
Oil Cooler Adapter Stud871 lb in
Oil Drain Plug2518 lb ft
Oil Fill Tube Bolt2518 lb ft
Oil Filter2418 lb ft
Oil Gallery Plugs5339 lb ft
Oil Level Indicator Tube Bolt2518 lb ft
Oil Level Indicator Tube Stud1089 lb in
Oil Level Sensor Bolt1089 lb in
Oil Level Sensor Harness Bolt4029 lb ft
Oil Pan Bolts/Nuts - Lower1089 lb in
Oil Pan Bolt - Upper2115 lb ft
Oil Pan Skid Plate Bolt2015 lb ft
Oil Pressure Sensor Unit4936 lb ft
Oil Pressure Relief Valve3929 lb ft
Oil Pump Bolt2115 lb ft
Oil Pump Driven Gear Nut10074 lb ft
Oil Pump Gear Cover Bolt2115 lb ft
Oil Pump Pipe and Screen Assembly Bolts and Nuts2518 lb ft
Piston Cooling Nozzle Eye Bolt2115 lb ft
Positive Cable Junction Block Bracket to Power Steering Pump Bolt980 lb in
Positive Crankcase Oil Separator Bolt1089 lb in
Positive Crankcase Ventilation Oil Separator Bracket Nut2518 lb ft
Power Steering Pump Bolt5037 lb ft
Power Steering Pump Stud1089 lb in
Rocker Arm Shaft Bracket Bolt4130 lb ft
Starter Motor Bolt7858 lb ft
Transmission Fill Tube Nut1813 lb ft
Thermostat Housing Bolts/Nuts2518 lb ft
Thermostat Housing Stud871 lb in
Thermostat Cover Bolt2518 lb ft
Throttle Body Bolt1089 lb in
Torque Converter Bolt6044 lb ft
Transmission Oil Cooler Clip Nut980 lb in
Turbocharger Air Inlet Adapter Holding Clamp1089 lb in
Turbocharger Bolt7858 lb ft
Turbocharger Coolant Outlet Pipe Bracket Nut1089 lb in
Turbocharger Cooling Feed Pipe Bolt3526 lb ft
Turbocharger Cooling Return Pipe Bolt2518 lb ft
Turbocharger Heat Shield Bolts1089 lb in
Turbocharger Oil Feed Pipe Eye Bolt - Lower5037 lb ft
Turbocharger Oil Feed Pipe Eye Bolt - Upper3526 lb ft
Turbocharger Oil Return Pipe Stud871 lb in
Turbocharger Oil Return Pipe Bolts/Nuts2518 lb ft
Upper Intake Manifold Cover Bracket Bolt871 lb in
Upper Intake Manifold Cover Bolts653 lb in
Upper Oil Pan to Flywheel Housing Bolts2115 lb ft
Valve Adjusting Nut2216 lb ft
Valve Lifter Hold down Bracket Bolt1197 lb in
Valve Rocker Arm Cover Bolt - Lower1089 lb in
Valve Rocker Arm Cover Bolt - Upper1089 lb in
Valve Rocker Arm Oil Deflector Bolt1089 lb in
Water Outlet Bolts2518 lb ft
Water Pump Bolt2518 lb ft
Water Pump Inlet Pipe Bolts2518 lb ft
1. Use NEW fastener

Fastener Tightening Specifications

Engine Mechanical Specifications

ApplicationSpecification
MetricEnglish
General
Engine Type90 degree V-8
Displacement6.6 Liter402 cu in
RPOLMM
Bore103 mm4.0551 in
Stroke99 mm3.8976 in
Compression Ratio16.8:1
Engine Compression Test - Minimum2069 KPa300 psi
Idle Speed680 RPM
Firing Order1-2-7-8-4-5-6-3
Block
Cylinder Bore Diameter - Service Limits103.11 mm4.0594 in
Cylinder Bore Diameter - Production Value102.997-103.023 mm4.0550-4.0560 in
Camshaft
Camshaft Bearing Inside Diameter - Service Limit61.07 mm2.4043 in
Camshaft Bearing Inside Diameter - Production Value61.00-61.03 mm2.4016-2.4028 in
Camshaft End Play - Service Limit0.2 mm0.0079 in
Camshaft Journal Diameter - Service Limit60.92 mm2.3984 in
Camshaft Journal Diameter - Production Value60.932-60.962 mm2.3990-2.4001 in
Camshaft Lobe Lift - Exhuast - Production Value5.907 mm0.2326 in
Camshaft Lobe Lift - Intake - Production Value7.273 mm0.2863 in
Camshaft Runout - Service Limit0.05 mm0.0020 in
Cooling System
Capacity @ Engine RPM270 L/min @ 3172 RPM
Thermostat Full Open Temperature110 degrees C230 degrees F
Turbocharger Coolant Bypass Valve60 degrees C140 degrees F
Connecting Rod
Connecting Rod Bearing Clearance - Service Limit0.10 mm0.0039 in
Connecting Rod Bearing Clearance - Production Value0.036-0.077 mm0.0014-0.0030 in
Connecting Rod Bore Diameter - Bearing End - Production Value62.958-62.979 mm2.4789-2.4795 in
Connecting Rod Bore Diameter - Pin End - Service Limit34.53 mm1.3594 in
Connecting Rod Bore Diameter - Pin End - Production Value34.512-34.522 mm1.3587-1.3591 in
Connecting Rod Length163.0 mm6.42 in
Connecting Rod Side Clearance - Service Limit0.54 mm0.0213 in
Connecting Rod Side Clearance - Production Value0.31-0.49 mm0.0122-0.0193 in
Crankshaft
Connecting Rod Journal Diameter - Service Limit62.88 mm2.4756 in
Connecting Rod Journal Diameter - Production Value62.902-62.922 mm2.4764-2.4772 in
Crankshaft End Play - Service Limit0.54 mm0.0213 in
Crankshaft End Play - Production Value0.04-0.205 mm0.0016-0.0081 in
Crankshaft Main Bearing Clearance - Service Limit0.14 mm0.0055 in
Crankshaft Main Bearing Clearance - Production Value0.039-0.070 mm0.0015-0.0028 in
Crankshaft Main Journal Diameter - Service Limit79.89 mm3.1453 in
Crankshaft Main Journal Diameter - Production Value79.905-79.925 mm3.1459-3.1466 in
Crankshaft Runout - Service Limit0.44 mm0.0173 in
Crankshaft Runout - Production Value0.05 mm0.0020 in
Cylinder Head
Surface Flatness - Block Deck - Service Limit0.1 mm0.0039 in
Surface Flatness - Exhaust Manifold Deck - Production Value0.1 mm0.0039 in
Surface Flatness - Intake Manifold Deck - Production Value0.1 mm0.0039 in
Exhaust Manifold
Surface Flatness- Production Value0.3 mm0.0118 in
Intake Manifold
Surface Flatness - Production Value0.3 mm0.0118 in
Lubrication System
Oil Capacity - with Filter9.5 L10 qt
Oil Capacity - without Filter8.7 L9.2 qt
Oil Pressure - Minimum- Hot - at idle48 KPa7 psi
Oil Pressure - Minimum - Hot - 1800 RPM193 KPa28 psi
Oil Relief Valve Opening Pressure441 KPa64 psi
Piston Cooling Jet Valve Opening Pressure176-216 KPa26-31 psi
Oil Pump
Gear Shaft Outside Diameter - Drive - Service Limit19.86 mm0.7819 in
Gear Shaft Outside Diameter - Drive - Production Value19.947-19.960 mm0.7853-0.7858 in
Gear Shaft Outside Diameter - Driven - Service Limit19.86 mm0.7819 in
Gear Shaft Outside Diameter - Driven - Production Value19.947-19.960 mm0.7853-0.7858 in
Gear Shaft-to-Bushing - Service Limit Clearance0.14 mm0.0055 in
Gear-to-Cover Clearance - Drive/Driven - Service Limit0.109 mm0.0043 in
Gear-to-Cover Clearance - Drive/Driven - Production Value0.064-0.109 mm0.0025-0.0043 in
Gear-to-Housing Clearance - Drive/Driven - Service Limit0.22 mm0.0087 in
Gear-to-Housing Clearance - Drive/Driven - Production Value0.125-0.221 mm0.0049-0.0087 in
Piston Rings
Piston Ring End Gap-First Compression Ring - Service Limit1.37 mm0.0539 in
Piston Ring End Gap-First Compression Ring - Production Value0.3-0.45 mm0.0118-0.0177 in
Piston Ring End Gap-Second Compression Ring - Service Limit1.35 mm0.0531 in
Piston Ring End Gap-Second Compression Ring - Production Value0.50-0.65 mm0.0197-0.0256 in
Piston Ring End Gap-Oil Control Ring - Service Limit1.20 mm0.0472 in
Piston Ring End Gap-Oil Control Ring - Production Value0.15-0.35 mm0.0059-0.0138 in
Piston Ring to Groove Clearance-First Compression Ring - Service Limit0.26 mm0.0102 in
Piston Ring to Groove Clearance-First Compression Ring - Production Value0.08-0.17 mm0.0030-0.0067 in
Piston Ring to Groove Clearance-Second Compression Ring - Service Limit0.10 mm0.0039 in
Piston Ring to Groove Clearance-Second Compression Ring - Production Value0.01-0.03 mm0.0004-0.0012 in
Piston Ring to Groove Clearance-Oil Control Ring - Service Limit0.12 mm0.0047 in
Piston Ring to Groove Clearance-Oil Control Ring - Production Value0.01-0.03 mm0.0004-0.0012 in
Pistons and Pins
Piston-Piston Diameter102.948-102.960 mm4.0531-4.0535 in
Piston-Piston Diameter - Production Value102.898-102.910 mm4.0510-4.0516 in
Piston-Piston to Bore Clearance - Production Value0.090-0.120 mm0.0035-0.0047 in
Piston-Piston Pin Bore Diameter34.504-34.512 mm1.3584-1.3587 in
Pin-Piston Pin Clearance to Piston Pin Bore - Service Limit0.017 mm0.0007 in
Pin-Piston Pin Clearance to Piston Pin Bore - Production Value0.004-0.017 mm0.0002-0.0007 in
Pin-Piston Pin Diameter - Service Limit34.45 mm1.3563 in
Pin-Piston Pin Diameter - Production Value34.495-34.5 mm1.3581-1.3583 in
Starter
Rated Output3.5 KW
Valve System
Valves-Valve Face Angle - Production Value45 degrees
Valves-Valve Face Width - Service Limit2.5 mm0.0984 in
Valves-Valve Face Width - Production Value2.1 mm0.0827 in
Valves-Valve Head Diameter - Exhaust31.0 mm1.22 in
Valves-Valve Head Diameter - Intake33.0 mm1.30 in
Valves-Valve Seat Angle45 degrees
Valves-Valve Stem Diameter7.0 mm0.28 in
Valves-Valve Stem Oil Seal Installed Height6.05 mm0.2382 in
Valves-Valve Stem-to-Guide Clearance - Service Limit0.20 mm0.0079 in
Valves-Valve Stem-to-Guide Clearance - Exhaust - Production Value0.038-0.071 mm0.0015-0.0028 in
Valves-Valve Stem-to-Guide Clearance - Intake - Production Value0.030-0.063 mm0.0012-0.0025 in
Valves-Valve Stem-to-Guide Clearance0.20 mm0.0079 in
Valve Lifters/Push Rods-Push Rod Straightness0.8 mm0.0315 in
Rocker Arms-Valve Rocker Arm Bore Diameter22.010-22.035 mm0.8665-0.8675 in
Rocker Arms-Valve Rocker Arm Bore-to-Shaft Clearance - Service Limit0.20 mm0.0079 in
Rocker Arms-Valve Rocker Arm Bore-to-Shaft Clearance - Production Value0.010-0.056 mm0.0004-0.0022 in
Rocker Arms-Valve Rocker Arm Ratio - Exhaust1.69:1
Rocker Arms-Valve Rocker Arm Ratio - Intake1.36:1
Rocker Arms-Valve Rocker Arm Shaft Diameter - Service Limit21.85 mm0.8602 in
Rocker Arms-Valve Rocker Arm Shaft Diameter - Production Value21.979-22.000 mm0.8653-0.8661 in
Valve Springs-Valve Spring Free Length - Production Value56.6 mm2.2283 in
Valve Springs-Valve Spring Installed Height - Production Value41 mm1.6142 in
Valve Springs-Valve Spring Load - Exhaust - Service Limit275 N at 41 mm61.8 lb at 1.61 in
Valve Springs-Valve Spring load - Exhaust - Production Value315-363 N at 41 mm71-81.6 lb at 1.61 in
Valve Springs-Valve Spring Load - Intake - Service Limit306 N at 41 mm68.8 lb at 1.61 in
Valve Springs-Valve Spring Load - Intake - Production Value315-363 N at 41 mm71-81.6 lb at 1.61 in

Engine Mechanical Specifications

Adhesives, Fluids, Lubricants, and Sealers

ApplicationType of MaterialGM Part Number
United StatesCanada
Sealing Cup PlugThreadlocker8902129710953488
Upper Oil Pan to Cylinder BlockSealant1237852188901148
Flywheel Housing to Cylinder BlockSealant1237852188901148
Engine Front Cover to Cylinder BlockSealant1237852188901148
Lower Oil Pan to Upper Oil PanSealant1237852188901148
Crankshaft Bearing Side Cap BoltsSealant1234600410953480
Intake Manifold to Cylinder HeadSealant1237852188901148
Rocker Arm Shaft15W-408886249788862379
Valve Bridge Cap15W-408886249788862379
Valve Stem Seal15W-408886249788862379
Valve LifterLubricant8886258688862827
Piston Ring15W-408886249788862379
Crankshaft Bearing15W-408886249788862379
Connecting Rod Bearing15W-408886249788862379
Thrust Bearing15W-408886249788862379
Camshaft BearingLubricant8886258688862827
CamshaftLubricant8886258688862827
Connecting Rod Small End Bushing15W-408886249788862379
Push Rod15W-408886249788862379
Crankshaft Bearing Cap BoltMolybdenum Disulfide1052948992926
Lithium GreaseLubricant8902166889021674
Parts CleanerCleaner8886265088901247

Adhesives, Fluids, Lubricants, and Sealers

Scheme 73

Scheme 73: Connecting Rod Bearing Grade
CalloutComponent Name
1First Design
2Second Design
Connecting Rod Grade (Stamped on Connecting Rod)Use This Bearing ColorBearing ThicknessOil Clearance
Metric (mm)English (in)Metric (mm)English (in)
AGreen2.007- 2.0130.0790- 0.07930.037- 0.0760.0015- 0.0030
BYellow2.011- 2.0170.0792- 0.07940.037- 0.0760.0015- 0.0030

Connecting Rod Bearing Grade

Scheme 74

Scheme 74: Cylinder Head Gasket (First Design)
CalloutComponent Name
1Grade A
2Grade B
3Grade C
4Block Over-Bored
5Block Over-Bored and Deck Milled
6Right
7Left

Scheme 75

Scheme 75: Cylinder Head Gasket (Second Design)
CalloutComponent Name
1Grade A
2Grade B
3Grade C
4Right Bank Only
5Block Over-Bored
6Right
7Left
Cylinder Head Gasket GradeTi Max (Piston Projection)Compressed Gasket Thickness
Metric (mm)English (in)Metric (mm)English (in)
Grade A0.223-0.2740.0088-0.01080.90-1.000.0354-0.0394
Grade B0.274-0.3250.0108-0.01280.95-1.050.0374-0.0413
Grade C0.325-0.3760.0128-0.01481.00-1.100.0394-0.0433
Block Over-Bored 0.010-0.030 in (0.254-0.762 mm)0.223-0.3760.0088-0.01481.00-1.100.0394-0.0433
Block Over-Bored 0.010-0.030 in (0.254-0.762 mm) and Deck Milled 0.008 in (0.203 mm)0.4257-0.57770.0168-0.02281.25-1.350.0492-0.0532

Cylinder Head Gasket Selection Specifications

Crankshaft Bearing Selection Specifications

Cylinder Block GradeCrankshaft Journal GradeIdentification Bearing ColorOil Clearance
Metric (mm)English (in)
11Black0.041-0.0680.0016-0.0027
12Brown0.039-0.0650.0015-0.0026
21Blue0.043-0.0700.0017-0.0028
22Black0.041-0.0670.0016-0.0027

Crankshaft Bearing Selection Specifications

Valve Clearance Adjustment Specifications

CylinderAdjust at No 1 Compression Stroke TDCAdjust at No 1 Exhaust Stroke TDC
Left BankRight BankIntakeExhaustIntakeExhaust
1XX
2XX
3XX
4XX
5XX
6XX
7XX
8XX

Valve Clearance Adjustment Specifications

Scheme 76

Scheme 76: Cylinder Head - Exhaust View
Service Hole LocationThread SizeDrillCounterbore ToolStop CollarTapDriverInsertDrill Depth (Max)Tap Depth (Min)
Mm(in)Mm(in)
1M 10 x 1.5211212N/A213214215250.985210.827

Cylinder Head - Exhaust View

Scheme 77

Scheme 77: Cylinder Head - Intake View
Service Hole LocationThread SizeDrillCounterbore ToolStop CollarTapDriverInsertDrill Depth (Max)Tap Depth (Min)
Mm(in)Mm(in)
1M 8 x 1.25206207N/A208209210210.827170.669

Cylinder Head - Intake View

Scheme 78

Scheme 78: Cylinder Head - Top View
Service Hole LocationThread SizeDrillCounterbore ToolStop CollarTapDriverInsertDrill Depth (Max)Tap Depth (Min)
Mm(in)Mm(in)
1M 6 x 1.0201202N/A203204205170.669130.512
2M 8 x 1.25206207N/A208209210261.024200.788
3M 10 x 1.5211212N/A213214215261.024200.788

Cylinder Head - Top View

Scheme 79

Scheme 79: Cylinder Head - Rear View
Service Hole LocationThread SizeDrillCounterbore ToolStop CollarTapDriverInsertDrill Depth (Max)Tap Depth (Min)
Mm(in)Mm(in)
1M 8 x 1.25206207N/A208209210170.669130.512
2M 10 x 1.5211212N/A213214216200.788160.630

Cylinder Head - Rear View

Scheme 80

Scheme 80: Cylinder Head - Front View
Service Hole LocationThread SizeDrillCounterbore ToolStop CollarTapDriverInsertDrill Depth (Max)Tap Depth (Min)
Mm(in)Mm(in)
1M 8 x 1.25206207N/A208209210170.669130.512
2M 10 x 1.5211212N/A213214216200.788160.630

Cylinder Head - Front View