Section 1.13 Flywheel Reconditioning

Section 1.13
Flywheel Reconditioning

Use the following procedure to recondition the flywheel. Clean the flywheel with a non-caustic solvent and dry with compressed air. ‪


To avoid injury from flying debris when using compressed air, wear adequate eye protection (face shield or safety goggles) and do not exceed 40 psi (276 kPa) air pressure.‪

  1. Visually inspect the flywheel for cracks, heat checks and extensive scoring which would make it unfit for further service. Replace or resurface as required.
  2. Inspect ring gear for worn, chipped or cracked teeth. If teeth are damaged, replace ring gear.

Section 1.13.1
Flywheel Resurfacing

Flywheels used with manual transmissions may be resurfaced to correct minor wear and scoring. ‪

When resurfacing the flywheel, refer to dimension "A", to determine if the flywheel was previously refaced or it if has adequate stock for refacing. See Figure "Flywheel Reconditioning" .‪

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Figure 1. Flywheel Reconditioning

Note: Flywheels used with automatic transmissions cannot be resurfaced. If damaged, replace flywheel.

Note: Flywheel resurfacing information is provided for guidance only. Detroit Diesel Corporation assumes no responsibility either for the results of any work performed in accordance with this information or for the ability of service personnel to detect heat cracks.

Note: Any crack or heat check in the flywheel could cause it to separate. After resurfacing, carefully examine the flywhee, for any cracks or heat checks. If there is any question, do not use the flywheel.

Section 1.13.2
Ring Gear Replacement

Follow these steps to replace ring gear:‪

  1. Remove any damaged ring gear from the flywheel as follows:
    1. Heat the ring gear with a torch to expand the gear.
    2. Once heated, knock the gear off the flywheel. Do not hit the flywheel when removing the ring gear.
  2. Install a new ring gear as follows:
    1. Heat the ring gear evenly until the gear expands enough to slip onto the flywheel.
    2. Ensure the ring gear is seated properly against the flywheel shoulder.
    3. Note: Do not heat the ring gear to a temperature higher than 278°C (500°F). Heating beyond this temperature will adversely affect ring gear hardness.

      Note: Refer to "3.4 Oil Pan" for oil pan removal. Refer to "3.5 Oil Level Gage Tube Removal and Assembly" for oil level gage tube removal and assembly.

Series 40E Service Manual - 6SE410
Generated on 10-13-2008

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