- Industrial Engine
- 3408E (S/N: 7PR1-UP)
- 3408E REMAN (S/N: BFD1-UP; ECP1-UP; BKY1-UP)
- 3412 (S/N: 38S1-UP)
- 3412 PC T DI (S/N: 38S1-UP)
- 3412C (S/N: 8AR1-UP)
- 3412C IND (S/N: 38S1-UP)
- 3412C IND PC T DI (S/N: 38S1-UP)
- 3412E (S/N: 4CR1-UP; BFT1-UP)
- 3412E IND (S/N: BDT1-UP)
- 3412E REMAN (S/N: BNF1-UP)
- 3408E REMAN (S/N: BFD1-UP; ECP1-UP; BKY1-UP)
- Marine Engine
- 3412E MARINE (S/N: 9PW1-UP)
- Petroleum Engine
- 3412E PETROLEUM (S/N: Z2D1-UP)
Description Of Change: New cylinder packs are now used on the engines that are listed above. The new cylinder packs include a piston pin with a coating of tungsten and carbon. This coating improves scuffing resistance, and wear resistance. The coating also reduces friction.
Adaptable To: The 10R-8409 Cylinder Pack As is a direct replacement for the old 0R-7858 Cylinder Pack Gp. The 10R-8410 Cylinder Pack As is a direct replacement for the old 10R-3270 Cylinder Pack Gp. The new cylinder pack is adaptable back to the first production of the listed engines.
If the 10R-8409 Cylinder Pack As is replacing the 0R-7858 Cylinder Pack Gp, all cylinders must be replaced. The oil spray jets must also be replaced with the 173-0147 Piston Cooling Jet As with the 150-1156 Special Bolt.
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| Illustration 1 | g01812415 |
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(1) Old piston pin
(2) New piston pin | |
The new piston pin (2) with the coating of tungsten and carbon will be black in appearance. Refer to Illustration 1.
Note: Failure to use this coated piston pin could result in seizure of the piston pin.