New Relief Valve Has Improved Service Life {3182,3064}
Usage:
120H (4MK, 2AN, 9YR, 6NM, 6TM, 5FM, 9FN, 3GR),
135H (3YK, 8WN, 7MM),
12H (4XM, 8MN, 2WR, 5ZM, 4ER, 2LR, 2GS),
140H (2ZK, 9TN, 9ZN, 3FR, 8JM, 5HM, 8KM, 3AS),
143H (1AL),
160H (9EJ, 3GM, 9JM, 2FM, 6WM, 2HS),
163H (5AK) Motor Graders
New lubrication and drain relief valves are used in the transmissions of the above listed machines. The new 148-1925 Relief Valve is part of the 144-2205 Planetary Case and Parts Group and the 144-2206 Planetary Case and Parts Group, and is a direct replacement for the former 8E-2390 Relief Valve, which is not canceled. The new relief valves are effective with Transmission Serial Numbers 4KY1233, 4LY512, 4MY5997 and 4NY745.
Caterpillar Information System:
1999/10/18 New Hump Hose And Adjustment Procedure Improve Service Life {5057}
1999/10/18 Recommendations To Extend Transmission Clutch Service Life After Rebuild {3065}
1999/10/11 Hydraulic Quick Coupler Pin Now Available For Improved Fit Up {6129}
1999/10/11 Improved Load Control Valve Now Available {5472}
1999/10/11 Changes In Service Parts For Carden (Axle) Shaft Assemblies {3251,3259}
1999/10/11 Lubrication Of The Drive Shaft Spline {3251,3253}
1999/10/11 Improved Fuel Water Separator Reduces Plugging Of The Fuel Priming Pump {1258,1260,1263}
1999/10/11 New Storage Box Available {7268}
1999/10/11 New Bypass Valve Used To Avoid Overcooling Of Hydraulic Oil {5071}
1999/10/11 Correction To Power Train "Electronic Control System", SENR8688-01 {3030}
1999/10/11 New Hydraulic Tank Baffle Assembly Is Available For 793 Off-Highway Trucks {5002}
1999/10/11 Window And Door Groups Featuring New Window Latches Released For "C" Series Cabs {7308,7310}
1999/10/18 Supplement To Correct Specifications On Final Drive {4050}
1999/10/18 New Automatic Retarder Control Available {3121}
1999/10/18 Correct Oil Must Be Used In Brake, Steering And Hoist Systems {4250,5050}
1999/10/18 A Special Instruction Is Now Available For Installing A Cab Door On A Skid Steer Loader {7308}
1999/10/18 New Service Interval For Torque On New And Reinstalled Wheels {4208}
1999/10/18 Correction To The Converter Outlet Pressure {3030,3101}
1999/10/18 New Belts Used To Reduce Hose Wear {5057,5605}
1999/10/18 New Parts Used To Improve Chain Clearance {4192,7228}
1999/10/18 New Measuring Wheel Used {4201}
1999/10/25 Improved Engine Enclosure Now Available {7263}
1999/10/25 New Mounting For Engine Enclosure Doors Improves Service Life {7263}
1999/10/25 Brake Life Severely Reduced When Performing Production Compaction Cycles In Travel (Third) Speed {4251}