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ISM, ISMe, and QSM11 – 016-006   Flywheel Housing

Install

 TOC

Install two guide pins, Part Number 3376697, in the cylinder block to help support and align the housing during installation.

Apply a 2 mm [1/16 in] bead of silicone sealant, Part Number 3823494, on the mounting surface of the housing and around each capscrew hole.

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Apply silicone sealant to each rear corner of the oil pan gasket and flywheel housing mating surface.

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 WARNING 

This component or assembly weighs greater than 23 kg [50 lb]. To prevent serious personal injury, be sure to have assistance or use appropriate lifting equipment to lift this component or assembly.

Install the flywheel housing over the guide pins.

Do not damage the oil pan gasket when installing the flywheel housing.

The flywheel housing bore must be aligned with the crankshaft. Do not tighten the capscrews to the final torque value until the flywheel housing is aligned.

Install the capscrews. Remove the guide pins, and install the remaining two capscrews.

Torque Value:  7  n.m  [60 in-lb]

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Measure

 TOC

Bore Alignment


Use dial indicator gauge, Part Number 3376050, and dial gauge attachment, Part Number ST-1325, to measure the bore alignment.

Adjust the dial indicator gauge to zero (0).

Use the accessory driveshaft to rotate the crankshaft one complete revolution (360 degrees).

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Flywheel Housing Bore Alignment Maximum Total Indicator Reading
mm
SAE Number
in
0.30
00
0.012
0.25
0
0.010
0.25
1/2
0.010
0.20
1
0.008
0.20
2
0.008
0.20
3
0.008

If the maximum bore alignment does not meet the specifications, use a rubber hammer to move the housing in the necessary direction, and repeat the measurement procedure.

If the bore alignment will not meet the specifications or the bore is not round, the housing must be replaced.

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Face Alignment


 CAUTION 

The tip of the gauge must not enter the capscrew holes or the gauge will be damaged.

Install the contact tip of the dial indicator gauge against the flywheel housing face.

Push the crankshaft toward the front of the engine.

Adjust the dial indicator gauge to zero (0).

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Monitor the dial indicator gauge while turning the crankshaft.

Use the accessory driveshaft to rotate the crankshaft one complete revolution (360 degrees) while keeping the crankshaft end thrust pushed forward.

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Flywheel Housing Face Alignment Maximum Total Indicator Reading
mm
SAE Number
in
0.30
00
0.012
0.25
0
0.010
0.25
1/2
0.010
0.20
1
0.008
0.20
2
0.008
0.20
3
0.008

If the maximum face alignment does not meet the specifications, the flywheel housing must be replaced.

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Tighten all capscrews in the sequence shown.

Torque Value:

  1. 68 n.m   
    [50 ft-lb]
Torque Value:

  1. 129 n.m   
    [95 ft-lb]
Torque Value:

  1. 197 n.m   
    [145 ft-lb]

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Measure the bore and face alignment again.

If bore and face alignment does not meet the specifications, loosen the housing capscrews. Tighten the capscrews, and measure the bore and face alignment again.

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Last Modified:  07-May-2009
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Published by Jack

Hello, I'm Jack, a diesel engine fan and a blogger. I write about how to fix and improve diesel engines, from cars to trucks to generators. I also review the newest models and innovations in the diesel market. If you are interested in learning more about diesel engines, check out my blog and leave your feedback.