A New Adapter Is Used on Certain 3512C Petroleum Engines {1157}
- Transmission:
- TH55FT-E70 (S/N: PCJ1-UP)
- Petroleum Engine:
- 3512C (S/N: R1A1-UP; R1S1-UP)
Description of Change: The new adapter has more surface area and creates a better seal.
Adaptable To: The new 434-3759 Adapter replaces the 123-6905 Adapter in the above engines.
The former 123-6905 Adapter is canceled.
The new 434-3759 Adapter is adaptable to the above engines back to first production.
This change is effective on 3July 2013 for transmissions TH55FT-E70 PCJ.
This change is effective with the engine serial numbers listed in Table 1.
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Effective Serial Number     |
---|
S/N:R1A01862-UP     |
S/N:R1S01328-UP     |
Rework Procedure
The new parts required to resolve oil leak on the 123-6905 Adapter are listed in Table 2.
Show/hide table
Qty     | New Part     |
---|---|
1     | 3B-8602 Setscrew     |
1     | 154-9731 Thread Lock Compound     |
Show/hide table
Illustration 1 | g03384409 |
- Locate drain hole (1) in the engine flywheel housing.
- Tap this hole with a 5/8 - 11 tap to a depth of at least 12.7 mm (0.5inch).
- Screw a 3B-8602 Setscrew into the hole. Make sure that the setscrew is flush with the surface. The setscrew should not be above the surface.
- Remove the setscrew. Apply high strength thread lock compound 154-9731 Thread Lock Compound to the setscrew.
- Install the setscrew into the hole and tighten the setscrew.
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