Usage:
D9R (7TL, 8BL),
D10R (3KR) Tractors;
834B (7BR),
988F (2ZR),
990 (4FR) Wheel Loaders;
24H (7KK) Motor Graders;
PM-565 (3TK) Cold Planers;
631E (1AB1640-Up),
633E (2PS),
637E (1FB660-Up),
651E (4YR),
657E (5YR, 6PR, 6TR, 7KR) Wheel-Tractor Scrapers;
769D (5TR),
771D (6JR),
773D (7ER). 775D (6KR) Off-Highway Trucks;
836 (7FR) Compactors;
5110 (7GN) Excavators
Description of Change: A new O-ring seal is used in fuel injection pump groups in the above machines powered by 3408E and 3412E Engines with hydraulic electronic unit injectors, (HEUI). The new O-ring seal provides improved initial combustion gas sealing in the fuel injection pump groups in these machine engines.
Adaptable To: The new 9X-7681 O-Ring Seal is a direct replacement for the former 5P-9757 O-Ring Seal and is effective with 3408E (99C465-Up, 7PR1-Up) and 3412E (80M255-Up, 4CR500-Up) Engines. The new 9X-7681 O-Ring Seal is a component of the 108-7090 and 131-0468 Fuel Injection Pump Groups and adaptable to all earlier 3408E and 3412E Engines.
Typical view of the 9X-7681 O-Ring Seal (1).
NOTE: The new 9X-7681 O-Ring Seal may deteriorate as the engine hours build, but it will provide enough time for the unit injector to seal and seat in the adapter for the long term. Deterioration of the O-ring seals due to combustion temperature is normal.