SMCS - 1100
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Type 1 Engines and 9RM Engines
Note: For a complete description of Type 1 and Type 2 engines, refer to the Specifications Module, "Engine Design" for more information.
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Illustration 1 g00295370
Bolt tightening sequence for the cylinder head
Use the following procedure in order to tighten the cylinder head bolts:
1. Put engine oil on the threads of the bolts and the nuts. Tighten bolts (1) through bolts (22) in a numerical sequence in Illustration 1.
Torque for the bolts ... 110 N·m (81 lb ft)
2. Tighten bolts (1) through bolts (22) again in a numerical sequence.
Torque for bolts ... 110 N·m (81 lb ft)
3. Rotate bolts (1) through bolts (22) in a numerical sequence to the following values:
a. Tighten the bolts of short length "S" to the following value.
Rotate the bolts in a clockwise direction: ... 150 degrees
b. Tighten the bolts of medium length "M" to the following value.
Rotate the bolts in a clockwise direction: ... 180 degrees c. Tighten the bolts of long length "L" to the following value.
Rotate the bolts in a clockwise direction: ... 210 degrees
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Illustration 2 g00295371
Bolts, nuts, and components of the cylinder head
(1) Tighten the nuts that hold fuel injectors to the following torque: ... 12 N·m (10 lb ft) Note: When the fuel injection nozzle is removed, the following items must be replaced:
dust seal and seat washer.
(2) Tighten the nuts for fuel line to the following torque: ... 18 N·m (13 lb ft) (3) Tighten the bolts that hold the rocker shaft to the cylinder head to the following torque:
Begin tightening the inner bolts. Then tighten the bolts by working toward the end of the shaft.
Cast iron or steel bracket ... 75 N·m (55 lb ft) Aluminum bracket ... 40 N·m (30 lb ft) (4) Valve lash
Inlet ... 0.20 mm (.008 inch) Exhaust ... 0.45 mm (.018 inch)
(5) Maximum permissible nozzle projection below cylinder head face after resurfacing ... 4.45 mm (.175 inch)
Maximum allowance for resurfacing ... 0.30 mm (.012 inch)
(6) Depth of new cylinder head ... 102.79 to 103.59 mm (4.047 to 4.078 inch) Minimum depth of cylinder head after resurfacing ... 102.48 mm (4.035 inch)
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Illustration 3 g00295372
Positions for measuring the bow of the cylinder head (typical example)
Maximum permissible amount of bow (curve of cylinder head) Naturally aspirated engines
A ... 0.08 mm (.003 inch) B ... 0.15 mm (.006 inch) C ... 0.15 mm (.006 inch) Turbocharged engines
A ... 0.13 mm (.005 inch) B ... 0.25 mm (.010 inch) C ... 0.25 mm (.010 inch)
Tighten the bolts of the inlet manifold (not shown) to the following torque: ... 44 N·m (32 lb ft)
Tighten exhaust manifold nuts (not shown) to the following torque:
Plated ... 44 N·m (32 lb ft) Plain ... 50 N·m (37 lb ft)
Type 2 Engines and 7BJ Engines
Note: For a complete description of Type 1 and Type 2 engines, refer to the Specifications Module, "Engine Design" for more information.
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Illustration 4 g00295370
Bolt tightening sequence for the cylinder head
Use the following procedure in order to tighten the cylinder head bolts:
1. Put engine oil on the threads of bolts. Tighten bolts (1) through bolts (22) in a numerical sequence in Illustration 4.
Torque for bolts ... 110 N·m (81 lb ft)
2. Tighten bolts (1) through bolts (22) again in a numerical sequence.
Torque for bolts ... 110 N·m (81 lb ft)
3. Rotate bolts (1) through bolts (26) in a numerical sequence to the following values:
a. Tighten the bolts of short length "S" to the following value.
Rotate the bolts in a clockwise direction: ... 150 degrees
b. Tighten the bolts of medium length "M" to the following value.
Rotate the bolts in a clockwise direction: ... 180 degrees c. Tighten the bolts of long length "L" to the following value.
Rotate the bolts in a clockwise direction: ... 210 degrees
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Illustration 5 g00295373
Bolts, nuts, and components of the cylinder head
Note: When the fuel injection nozzle is removed, the following items must be replaced:
dust seal and seat washer.
(1) Tighten the bolts that hold the rocker shaft to the cylinder head to the following torques:
Begin tightening the inner bolts. Then tighten the bolts by working toward the end of the shaft.
Cast iron or steel bracket ... 75 N·m (55 lb ft) Aluminum bracket ... 40 N·m (30 lb ft)
(2) Valve lash
Inlet ... 0.20 mm (.008 inch) Exhaust ... 0.45 mm (.018 inch)
(3) Maximum permissible nozzle projection below cylinder head face after resurfacing ... 4.45 mm (.175 inch)
Maximum allowance for resurfacing ... 0.30 mm (.012 inch)
(4) Depth of new cylinder head ... 102.79 to 103.59 mm (4.047 to 4.078 inch) Minimum depth of cylinder head after resurfacing ... 102.48 mm (4.035 inch)
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Illustration 6 g00295372
Positions for measuring the bow of the cylinder head (typical example)
Maximum permissible amount of bow (curve of the cylinder head) A ... 0.08 mm (.003 inch)
B ... 0.15 mm (.006 inch) C ... 0.15 mm (.006 inch)
Tighten the bolts for the inlet manifold (not shown) to the following torque: ... 44 N·m (32 lb ft)
Tighten the nuts for the exhaust manifold (not shown) to the following torque:
Plated ... 44 N·m (32 lb ft)
Plain ... 50 N·m (37 lb ft)
1 1 0
Turbocharger
SMCS - 1052
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Turbocharger
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Illustration 1 g00295466
(1) Put oil on the threads of the nut and put oil on the seat face.
Tighten the impeller nut to the following torque: ... 2 to 2.3 N·m (18 to 20 lb in) Tighten the nut again to the following value: ... 110 degrees
Note: Do not bend or add stress to the shaft when the nut is tightened.
(2) Tighten the bolts, which hold the back plate, to the following torque: ... 8.5 to 10.2 N·m (75 to 90 lb in)
(3) Put 5P-3931 Anti-Seize Compound on the threads. Tighten the bolts, which hold the compressor housing to the center section, to the following torque: ... 15.3 to 18.7 N·m (12 to 14 lb ft)
(4) Put 5P-3931 Anti-Seize Compound on the threads. Tighten the bolts, which hold the turbine housing to the center section, to the following torque: ... 18.6 to 20.4 N·m (14 to 15 lb ft)
(5) Turbine wheel assembly
Minimum journal outside diameter ... 10.152 mm (.3997 inch) Ring groove diameter (minimum) ... 14.401 mm (.5670 inch) Ring groove width (maximum) ... 1.740 mm (.0685 inch) Hub outside diameter (minimum) ... 17.323 mm (.6820 inch) (6) End play for shaft
Minimum permissible end play ... .03 mm (.001 inch) Maximum permissible end play ... .10 mm (.004 inch) (7) Compressor wheel
Bore inside diameter (maximum) ... 6.353 mm (.2501 inch) (8) Backplate assembly
Seal inside diameter (maximum) ... 12.713 mm (.5005 inch)
Flatness from the backplate to the mating surface of the center housing is within the following value: ... .013 mm (.0005 inch)
(9) Thrust collar
Thickness (maximum) ... 18.339 mm (0.7220 inch)
Bore inside diameter (maximum) ... 6.363 mm (.2505 inch)
Thrust bearing groove width (maximum) ... 4.440 mm (.1748 inch) Thrust bearing groove diameter (minimum) ... 9.398 mm (.3700 inch) Piston ring groove width (maximum) ... 1.659 mm (.0653 inch) (10) Thrust bearing
Thickness (minimum) ... 4.359 mm (0.1716 inch)
Bore inside diameter (maximum) ... 10.922 mm (.4300 inch) (11) Radial play (side to side movement) for shaft
Minimum permissible radial play (side to side movement) ... .08 mm (.003 inch)
Maximum permissible radial play (side to side movement) ... .15 mm (.0059 inch)
(12) Center housing
Bearing inside diameter (maximum) ... 15.806 mm (.6223 inch) Seal inside diameter (maximum) ... 17.805 mm (.7010 inch)
Put 5P-3931 Anti-Seize Compound on the threads. Tighten the bolts, which hold the turbocharger to the manifold (not shown), to the following torque: ... 55 ± 5 N·m (40 ± 4 lb ft)