Dd15 engine torque spec

1. 1 12 8-10
SUBJECT DATEAir Compressor Drive Gear Nut Torque December 2010
Additions, Revisions, or Updates
Publication Number / TitlePlatform Section Title ChangeDDC-SVC-MAN-0080
DD
Specifications
Information about the air compressor drive gear nut torque is added
to this procedure.
DDC-SVC-MAN-0081 41.4 Installation of the Air
Compressor
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All information subject to change without notice. 3
12 8-10 Copyright © 2011 DETROIT DIESEL CORPORATION

2. 2 Engine System Torque Specifications
These tables contain the torque specifications for the engine system components.
Rocker CoverComponent Metric Unit English UnitRocker Cover to Camshaft Housing 20 N·m 14 lb·ftAir filter Bracket(s) to Rocker Cover 20 N·m 14 lb·ftCamshaft Housing and related componentsComponent Metric Unit English UnitInjector Harness Mounting Screws 10 N·m 7 lb·ftInjector Harness Electrical Contacts to Injector 1.5 N·m 13 lb·in.Jake® Brake Solenoid Terminals 1.5 N·m 13 lb·in.Rocker Shaft Bolts (intake and exhaust) 50–55 N·m +90° torque turn 36–41 lb·ft +90° torque turnJake® Brake Solenoid Hold-Down Screws 10 N·m 88 lb·in.Camshaft Housing Mounting Bolts(14) 120 mm length (M10) Primary 20 N·m Primary 15 lb·ftFinal 50-55 N·m Final 37-40 lb·ft(7) 108 mm length (M10) Primary 20 N·m Primary 15 lb·ftFinal 50-55 N·m Final 37-40 lb·ft(7) 63 mm length (M8) Primary 20 N·m Primary 15 lb·ftFinal 30 N·m Final 22 lb·ftCamshaft Position Sensor 10 N·m 88 lb·in.Cylinder HeadComponent Metric Unit English UnitDD13 Large Cylinder Head Bolts 200 N·m+ 180° torque turn 147 lb·ft + 180° torque turnDD13 Small Cylinder Head Bolts 60 N·m 44 lb·ftDD15 & DD16 Large Cylinder Head Bolts First 50 N·m First 37 lb·ftSecond 250 N·m Second 184 lb·ftThird 180° torque turn Third 180° torque turnDD15 & DD16 Small Cylinder Head Bolts 60 N·m 44 lb·ftValve Adjusting Screw 50 N·m 37 lb·ftPiston and Connecting Rod AssemblyComponent Metric Unit English UnitDD13 Connecting Rod Bolts 190 N·m + 90° torque turn 140 lb·ft + 90° torque turnDD15 & DD16 Connecting Rod Bolts 115 N·m + 180° torque turn 85 lb·ft + 180° torque turnPiston Spray Nozzle 30 N·m 22 lb·ft
2 Engine System Torque Specifications
4 All information subject to change without notice.
Copyright © 2011 DETROIT DIESEL CORPORATION 12 8-10

3. CrankshaftComponent Metric Unit English UnitDD13 Main Bearing Cap Bolts First 50 N·m First 36 lb·ftSecond 150 N·m Second 110 lb·ftThird 300 N·m Third 221 lb·ftFourth 90° torque turn Fourth 90° torque turnDD15 Main Bearing Cap Bolts First 50 N·m First 36 lb·ftSecond 150 N·m Second 110 lb·ftThird 250 N·m Third 184 lb·ftFourth 90° torque turn Fourth 90° torque turnFifth 90° torque turn Fifth 90° torque turnVibration Damper Pulley 200 N·m 147.5 lb·ftFlywheel and Flywheel HousingComponent Metric Unit English UnitFlywheel Bolts 200-220 N·m + 90° to 100° torque turn 147-162 lb·ft + 90° to 100° torque turnFlywheel Housing BoltsM8 x 16 (2 Qty) 30 N·m 22 lb·ftM14 x 1.5 x 90 120 N·m 88 lb·ftM10 x 45 (6 Qty) 60 N·m 44 lb·ftM10 x 90 (3 Qty) 60 N·m 44 lb·ftM14 x 1.5 x 180 (1 Qty) 120 N·m 88 lb·ftM8 x 45 (2 Qty) 30 N·m 22 lb·ftM8 x 30 (2 Qty) 30 N·m 22 lb·ftM14 x 1.5 x 70 (1 Qty) 120 N·m 88 lb·ftM12-10 (1 Qty) 100 N·m 74 lb·ftEngine Mounted Radiator SupportComponent Metric Unit English UnitEngine Mounted Radiator Support Bolts 250 N·m 184 lb·ftEngine Lifter BracketsComponent Metric Unit English UnitRear Lifter Bracket 180 N·m 132 lb·ftVenturi Pipe to Front Crossover Tube Lifter
Bracket
30 N·m 22 lb·ft
Coolant Delivery Pipe to Front Crossover Tube
Lifter Bracket
30 N·m 22 lb·ft
Belt Drive TensionerComponent Metric Unit English UnitMaximum Allowable Torque 60 N·m 44 lb·ft
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4. Air Compressor Drive Gear NutComponent Metric Unit English UnitDrive Gear Nut (left-hand thread) 210-250 N·m 155-185 lb·ft
2 Engine System Torque Specifications
6 All information subject to change without notice.
Copyright © 2011 DETROIT DIESEL CORPORATION 12 8-10

5. 3 Installation of the Air Compressor
Install as follows:
1.If removed, install the air compressor gear to the air compressor shaft and secure with nut. Thread is left-handed; torque
nut to 210-250 N·m (155-185 lb·ft).
2.Clean all foreign material from the mating surfaces of the air compressor and the cylinder block.
3.Install a new O-ring on the air compressor hub and a new O-ring on the oil supply, and then install the air compressor on
the cylinder block. Torque the four bolts to 60 N·m (44 lb·ft).
NOTICE: Ensure the correct bolt length is used when the air compressor is installed. If an incorrect bolt length (too
long) is used, the cup plugs installed in the cylinder block can be pushed out into the gear train causing severe
damage to the gear train. The correct bolt length is 35 mm (1.37 in.).
NOTICE: Ensure when the air compressor coolant lines are installed that there is an O-ring and an O-ring retainer
installed on both ends of the coolant lines. Ensure that the air compressor retainer is installed on the coolant line
and is pushed down to lock the lines onto the inlet and outlet ports to the cylinder block, fuel filter module and air
compressor. A leak will occur if the lines are incorrectly installed and the coolant line retainer is not engaged in the
locked position. If the O-ring or the coolant line retainers are missing or removed, replace the coolant line.
4.Install the coolant supply and return lines to the air compressor.
5.Install the air lines to and from the air compressor. Refer to OEM specifications.
6.Fill the cooling system. Refer to OEM specifications.
7.Start the engine and check for leaks.
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All information subject to change without notice. 7
12 8-10 Copyright © 2011 DETROIT DIESEL CORPORATION