1994/10/31 Caterpillar

Using The Correct Air Conditioner Compressor Oil{1802,7320}

Usage:

All Caterpillar Products Equipped With Air Conditioners

Reference: Service Manual; SENR3334-02; Air Conditioning And Heating.

Reference: Service Manual; SENR5664-01; Air Conditioning And Heating Systems With R-134a Refrigerant.

Reference: Special Instruction; SEHS9734; Retrofitting R-12 Air Conditioning To R-134a Refrigerant.

It is important that the correct air conditioning oil be used for the system being serviced. The correct oil for the type of system and compressor is shown in the following charts.

When installing a new or remanufactured compressor on a machine that had previously been retrofitted from R-12 to R-134a refrigerant, the oil must be drained from the new or remanufactured compressor and replaced with 177 mL (6 fluid oz.) of 4C-2960 Oil (Ester) to be compatible with the ester oil already in the system.

A retrofitted R-134a system may be identified by the retrofit label attached to the compressor block with tie-wraps, and by the 110-6395 Film over the original compressor label.

Caterpillar Information System:

1994/10/17 Radio Kits For Retrofitting Machines{7300}

1994/10/03 Oversize Fuel Pump Drive Idler Shaft Available To Salvage Cylinder Block{1206}

1994/09/26 Exhaust Dust Ejector Operation{1055,1068}

1994/09/26 Arc Suppressors Improve Life of Air Conditioner Thermostatic Switch{7337}

1994/09/26 Caterpillar Legendary Service Literature Catalog SELD0811 Updated{0374}

1994/09/19 Caterpillar Introduces New Long Life Heavy Duty Engine Coolant{1395}

1994/09/12 Improved Fuel Pump Bonnet Seal Has Better Heat Resistance {1251}

1994/09/05 New Water Seals Used In Cylinder Head Assemblies{1124}

1994/09/05 Remanufactured 3400 Cylinder Heads Now Use Intake And Exhaust Valves With Chrome Plated Valve Stems{1105}

1994/09/05 Use Of 4C-4377 Stress Plate Group In 3114 And 3116 Cylinder Block Reconditioning{0672,0673,1201}

1994/09/05 Fan V-Belt Part Number Has Changed For Certain Models With The 3204 Engine{1357}

1994/08/22 New Fuel Priming Pump And Improved Gasket Used{1258}

1994/10/31 Verification of Connecting Rod Eye Bushing Retention When Overhauling Engines{1218}

1994/12/05 New Muffler Bracket Improves Muffler Support{1062}

1994/12/12 Caterpillar Hose Press And Tool Usage{5057,0684}

1994/12/19 Spacer Plate Is Available To Make Installation Of Permanent Hose Couplings Easier {0684,5057}

1995/01/16 Catalytic Converter And Exhaust Conditioning Products Available{1091}

1995/01/30 New Bearing Kit Standards Published in Microfiche{3006,3258,4001}

1995/01/30 New Oil for All Engines Burning Low-Sulfur Fuel (0.05% or less) Except The 3600 Family Of Engines{1318}

1995/02/13 Wiring Harness Conduit Component Sizes {1408}

1995/02/20 Returning Core Engines For Full Refund {0374}

1995/03/13 List of Information Release Memos on Cat® Remanufactured Products Since July 1993{7754,0374,0376}

1995/03/20 Caterpillar Standards for Electrical Schematics{1400}

1995/05/01 Engine Air Filters{1054}