New Cover Assembly And Gasket Used In Oil Pump Group{7418}
Usage:
D379, D398 And D399 Industrial Engines;
D379, D398 and D399 Generator Sets
Description of Change: A new cover assembly, plate, O-ring seal, and gasket are used in the oil pump for the shut-off group on the above engines. The new parts will improve pump efficiency and permit a better seal between the cover assembly and housing.
Liquid gasket material was used with the former cover assembly. The gasket material had to be put on as a thin layer (with a silk screen). This was difficult for field service. If the application of gasket material was not correct, oil leakage was possible.
Adaptable As: The new parts, when used together are a direct replacement for the former part.
Caterpillar Information System:
1981/05/25 Washer Added Between Bolt And Thrust Plate For Oil Pump Idler Gear{1206}
1981/05/25 Use Correct Specifications To Check Piston Ring Gaps{1215}
1981/05/25 Instruction Cards For "Go-No Go" Gauges Now Available{0653}
1981/05/18 New Mounting Group For Overspeed Switch{7410}
1981/05/18 Replacement Bushings For Delco-Remy Electric Starting Motors Must Be Machined For Correct Clearances{1453,1454,1465}
1981/05/18 Change Made To Power Take-Off Adapter Housing{3055}
1981/05/18 Remove Direct Injection Fuel Nozzles With 6V4061 And 6V4054 Nozzle Pullers{0621}
1981/05/18 Safety: Battery Vent Caps{1401}
1981/05/11 Installation Of Rear Bearing Oil Seals In 3N6542, 3N8617, And 3N8618 Rear Power Takeoff Clutch Groups{3055}
1981/05/11 Remove And Install Cam Bearings With 6V4077 Cam Bearing Tool Group{0621,0622}
1981/05/11 Caterpillar Cooling System Conditioner (Liquid Or Spin On Elements) Can Be Used In Ford Truck Installations{1350}
1981/05/11 Use 6V4069 Body Group To Remove Tapered Drive Sleeve{0611}
1981/05/25 Air System Leakage Can Cause Problems With Engine Governor Stability At Low Idle RPM{1264,1803}
1981/06/01 Locks No Longer Used On Flywheel Bolts; New Torque Specifications For Flywheel Bolts{1156}
1981/06/01 Correct Use Of Keystone Ring Groove Gauges{1214,1215,1312,0653}
1981/06/01 New Seals And Clutch Discs Used{3300,3302}
1981/06/01 Some Single Part Numbers Have Two Half Bearings{7551}
1981/06/01 New Service Meter Used In Mechanical Shutoff Group{7478}
1981/06/01 Hardened Nuts And Higher Torque Now Used In Ahead And Astern Clutch Groups{3302}
1981/06/08 Inspect Piston Skirts During Engine Overhaul Procedures{1214,1213}
1981/06/08 Troubleshooting Water In Shut-Off Solenoid Housing{1259}
1981/06/08 Remanufactured Clutch Plates Available For Power Shift Transmissions{3155,0375}
1981/06/15 Procedure To Stop Lubricant Leakage From Flexible Couplings{3252}
1981/06/15 Plastic Cases Now Available For Electronic Testing And Diagnostic Equipment{0630,0650}