Pressure Taps Added To Hoist Oil Lines Group{5083,5057}
Usage:
789 Trucks
Description of Change: Pressure taps have been added to the hoist oil lines group at the hydraulic pump on 789 Trucks. These pressure taps provide a quick and easy way to test the relief valves in the hoist hydraulic system.
Adaptable To: The pressure taps in the 5T4479 Hoist Oil Lines Group are in effect with 9ZC144. The parts listed in the chart and shown in the illustration can be added to all earlier trucks.
Hoist oil lines group.
Caterpillar Information System:
1988/09/05 New Oil Level Gauge Used{1326}
1988/09/05 Improved Engine Exhaust Manifolds Used{1059}
1988/09/05 New Piston Cooling Jets Used{1331,1200}
1988/09/05 New Rocker Arm Shaft Assembly and Bolts Used{1102}
1988/08/29 New Fuel Injector Group Used {1251}
1988/08/29 Use 6V6640 Sealant For Gasket Material In Transmissions And Differentials {3006,3200,3258,7555}
1988/08/29 New Front Suspension Cylinder Rod Has Longer Service Life {7201}
1988/08/29 New Drain Port In Torque Converter Filter Base {3164,3169}
1988/08/29 Static-Type (Nonsuspension) Seat Available {7312}
1988/08/29 How To Determine If Relays Are Functioning Correctly {1400,1422}
1988/08/22 New Alternator With Built-In Regulator Used{1405}
1988/08/22 Improved Turbochargers Used{1052}
1988/09/05 Lists Of Duo-Cone Seals And Oil Recommendations{3258,4050,4208}
1988/09/05 Aerosol Dry Film Lubricant Available for Extension Sticks{0645,6502}
1988/09/05 New Stabilizer Valve Group Has New Lock Valve{6505}
1988/09/05 New Thrust Washer Used In Six Wheel Drive Transfer Gearbox{3250}
1988/09/05 Drain Holes Added To Rear Frame To Prevent Freeze Damage{7050}
1988/09/05 Trailer Axle Clearance{7050,3260}
1988/09/05 Electric Pump Now Used In Drum Water Spray System{8209}
1988/09/05 Use Either 7C0192 Or 9X0532 Gauge For Service Replacement Of Engine Oil Pressure Gauge{7455}
1988/09/12 New Low Temperature Ring Seals Available For Parts Service Of Front And Rear Suspension Groups{7201,7213}
1988/09/12 New Retainer Ring Used To Keep Spherical Bearing In Hydraulic Cylinders{7562,7553}
1988/09/12 Use Thread Lock On Suspension Cylinder Pistons{7201,7213,7200}
1988/09/12 New Torque Converter Mounted Retarder (TCMR) Control Arrangement Changes Operation Of Retarder Indicator{3121,3120}