Usage:
777B (4YC),
777C (4XJ),
777D (3PR, 2YW),
785 (8GB),
785B (6HK),
785C (5AZ, 1HW),
789 (9ZC),
789B (7EK),
789C (2BW),
793 (3SJ),
793B (1HL),
793C (4AR, 4GZ) Off-Highway Trucks;
776B (6JC),
776C (2TK),
776C (2TK),
776D (5ER),
784B (5RK) Off-Highway Tractors;
854G (1JW) Wheel Tractors;
D11N (74Z, 4HK),
D11R (8ZR, 9TR 9XR) Tractors;
992G (7HR ),
994 (9YF) Wheel Loaders;
5130 (7TJ, 5ZL),
5130B (4CS),
5230 (7LL) Excavators
- SUPPLEMENT: JANUARY 25, 1999
Service Magazine SEPD0447, Article 7, Page 7, December 7, 1998; "Cooling System Thermostat To Be Replaced At 6,000 Hours".
Disregard the Reference Articles. Some Reference Articles are incorrectly identified and another is missing The correct Reference Articles follow:
Reference: Service Magazine; December 19, 1994 "New Water And Oil Temperature Regulators Available".
Reference: Service Magazine; September 15, 1997 "New Temperature Regulators Provide More Accurate Opening And Closing Temperatures".
Reference: Service Magazine; October 20, 1997; "Service Interval Change For Extended Life Coolant Extender And Extended Life Coolant".
--------------- END SUPPLEMENT ---------------
Reference: Service Magazine; December 19, 1997 "New Water And Oil Temperature Regulators Available."
Reference: Service Magazine; September 15, 1997 "New Temperature Regulators Provide More Accurate Opening And Closing Temperatures".
Reference: Applicable Operation And Maintenance Manuals: "Coolant and Your Engine": SEPD0970; "Know Your Cooling System": SEBD0518; "SOS Coolant Analysis": PEHP5033; "Cooling System Maintenance": LEBT9321; "Cat Long Life Coolant/Antifreeze (Product Data Sheet)": PEHP4036; "Cat Long Life Coolant/Antifreeze": PHED4029; "Six Ways To Keep Your cooling System Working Right": PEDP9113; "Diesel Fuels And Your Engine": SEPD0717
3500 and 3500B Machine Engines are used in the above machines. These engines now require cooling system thermostats to be replaced at 6,000 hour intervals. Future Operation and Maintenance Manuals will reflect this change. Proper cooling system maintenance is important to the correct operation of thermostats. The reference publications listed contain various information related to proper maintenance and operating conditions of the thermostats in the above machine engines.