1984/12/10 Caterpillar

Addition Of Lubricator Will Help Prevent Corrosion In Air Prelube Motors{1319}

Usage:

All 3512 And 3516 Engines Equipped With Air Prelube Pumps

SUPPLEMENT: 02/11/85

SERVICE MAGAZINE, DECEMBER 10, 1984. In the article "Addition Of Lubricator Will Help Prevent Corrosion In Air Prelube Pump Motors", some of the information is not correct. Put a mark through that article and make reference to the article with a similar title in this issue.

--------------- END SUPPLEMENT ---------------

Description of Change: A lubricator group is now available for use with air prelube pumps. The lubricator group is part of the air lines groups, which are attachments. The lubricator group mounts on the air prelube pump and will help prevent corrosion in the pump.

Formerly, when the air prelube pump was not used for extended periods, the internal components could corrode and stick. This was caused by moisture in the air and not enough lubrication in the pump. The air prelube pump does not have enough suction to pull oil from the large lubricator in the starting air lines group and send it to the air prelube pump.

Adaptable As: The 7W522 Lubricator Group is adaptable to all 3512 and 3516 Engines equipped with an air prelube pump.

If a lubricator is not used with an air prelube pump, the air supply line at the pump can be disconnected and engine oil can be sprayed into the pump before and after extended periods of not being used. This will help prevent corrosion.

Caterpillar Information System:

1984/12/10 New Seal Used In Alternator Mounting Group{1405,1400}

1984/12/10 A Soot Filter Is Available For Use With Air Cleaners{1054}

1984/12/10 Improved BrakeSaver Seals Available{1155}

1984/12/10 New Air Pipe Retainers Used To Connect Turbocharger To Aftercooler{1052,1063}

1984/12/10 New 76.6°C (170°F) Water Temperature Regulators Used In Inlet Controlled Cooling Systems{1355,1350}

1984/12/10 Starters That Remain Engaged After Engine Is Running{1453}

1984/12/10 Lubrication Decals (Films) Are No Longer Used On Machines{7557}

1984/12/10 New Pressure Gauges Have Dual Scales [kPa (psi)]{0600}

1984/12/10 Fill Oil Sump Before Installing Woodward Governor{1264,1288,1289}

1984/11/26 New Fuel Injector Assembly Reduces Smoke When Operating At Lower RPM And Load{1251,1250}

1984/11/26 Identification Of Camshaft Groups And Valve Mechanism Groups{1210,1102}

1984/11/26 Important Differences In Engine Arrangements On 3208 Engines Equipped With Turbochargers{1000}

1984/12/10 Improved Turbocharger Oil Drain Elbows{1307,1052}

1984/12/10 Additional Clamp Reduces Vibration Of Turbocharger Oil Supply Line{1050,1052,1053}

1984/12/10 Bonnet Of Fuel Injection Pump Group Now Serviced Separately{1251,1250}

1985/01/14 Minimize Fuel Problems In Cold Weather Operation {1280,1250}

1985/01/14 New And Improved Gaskets In Front Housing Group And Accessory Drive Group {1151,1150}

1985/01/14 Install Different Body Assembly In Clutch Group To Correct Harsh Shifting {3312,3302}

1985/01/14 Remanufactured Air Fuel Ratio Controls {1278,7754}

1985/01/14 Remanufactured 1160 Engines Now Use Sleeve Metering Fuel Systems {1250,1286}

1985/01/14 Additions To Reference Chart For Major Production Changes {0374,0375,1000}

1985/01/14 New Engine Time Requirement Guides (TRG) {0374}

1985/01/14 Remanufactured Electronic Controls (U.S. And Canada) {7400,7754}

1985/01/14 Outright Purchase Of Cores For Remanufactured Products (U.S. And Canada) {7754}