Air Equipment - General Information Section 12 - Air Equipment - Group 12 M11 Page 12-2 Air Equipment - General Information The air equipment group consists of Cummins single and two cylinder air compressors, compressor check valves and air and coolant piping. It also includes air activated cranking motors. The air compressor is lubricated by engine lubricating oil which enters the compressor through a drilling in the support. The oil lubricates the air compressor connecting rod bearings and the crankshaft. The oil then flows to the air compressor crankcase and returns to the engine through a drain passage located in the support. The air compressor is cooled by the engine coolant.
Only the cylinder head is cooled on the single cylinder air compressor. Both the cylinder head and cylinders are cooled on the two cylinder air compressor. Service information, specifications, and repair of Cummins air compressors are contained in the following pub- lications: Single Cylinder Air Compressor - Shop Manual, Bulletin No. 3810242 SS338E Single Cylinder Air Compressor - Shop Manual, Bulletin No. 3810457 ST676 Two Cylinder Air Compressor - Shop Manual, Bulletin No. 3810257 ST773 Two Cylinder Air Compressor - Shop Manual, Bulletin No.
3810347 Instructions for testing and repairing air cranking motors and air compressors not manufactured by Cummins, can be obtained from the original equipment manufacturers. The following list contains the addresses of suppliers of air equipment for use on Cummins engines: U.S.A. Canada Bendix H.V.S.G. 901 Cleveland St. Elyria, OH 44036 Attention: Technical Services Dept. Bendix H.V.S.G. P.O. Box 5712 1005 Wilton Grove Rd. London Ontario, Canada N6A4S8 Attention: Technical Services Dept. Engine Starting Systems Allen and Martinsville Rd. P.O. Box 1776 Liberty Corner, NJ 07938 International Bendix H.V.S.G. Europe Ltd. 66 Grosvenor St. London, England W1X90B Attention:
Technical Services Dept. Midland Brake, Inc. 490 South Chestnut St. Owosso, MI 48867