HOSE 2138171 - Caterpillar

(5RK) Off-Highway Tractors;
771D (6JR),
775B (7XJ),
775D (6KR) Quarry Trucks;
769 (99F),
769B (99F),
769C (01X),
769D (5TR),
773 (63G),
773B (63W),
773D (7ER),
777 (84A),
777B (4YC),
777C (4XJ),
777D (3PR),
785 (8GB),
785B (6HK),
789 (9ZC),
789B (7EK),
793 (3SJ),
793B (1HL),
793C (4AR) Off-Highway TrucksDescription of Change: New double check valve will provide improved service life.Adaptable To: The 147-6277 Valve Group is a direct replacement of 135-9288 Double Check Valve Group. The new check valve is effective with 784B (5RK026) Off-Highway Tractors; 771D (6JR166), (6JR168-169); 775D (6KR166), (6KR170), (6KR175) Quarry Trucks; 769D (5TR648); 773D (7ER504-508), (7ER511-513); 777D (3PR322-323), (3PR333), (3PR335), (3PR340-341), (3PR345-347), (3PR353), (3PR423), (3PR427-432), (3PR470), (3PR483), (3PR486), (3PR500), (3PR503), (3PR525); 785B (6HK762-777); 789B (7EK604-629); 793C (4AR151-153), (4AR155), (4AR162), (4AR171-172), (4AR174-175), (4AR177-178), (4AR181-82), (4AR184-194), (4AR211-214), (4AR218-222), (4AR231-33) Off-Highway Trucks. It is adaptable to all earlier tractors and trucks when they have been fitted with dual brake relay valves (ARC).