1995/09/11 Caterpillar

Improved Prelube Pressure Switch Available {1400,1435,1319}

Usage:

All Caterpillar Machines Using Prelube System

Reference: Special Instruction, Servicing DT Connectors, SEHS9615.

A new pre-lube pressure switch is now available. The new switch provides increased reliability by eliminating the screw terminal and case ground connections.

The new 105-9152 Pressure Switch directly replaces the former 4Q-5451 Pressure Switch except that a Deutsch plug (DT) must be installed on the machine wiring harness. See the chart for parts needed to install the DT plug. See the listed reference material for additional installation instructions. The new 105-9152 Pressure Switch is adaptable to Caterpillar machines using the former 4Q-5451 Pressure Switch which will no longer be available.

NOTE: The former 4Q-5451 Pressure Switch used case ground for one of the conductors. The new 105-9152 Pressure Switch uses two separate conductors. When installing the new Deutsch plug, one of the wires must be connected to a clean engine or frame ground. Use a terminal of the proper size which can be found in the 1P-2305 Terminal Kit and the appropriate length of 5P-5623 Wire for the ground connection.

Caterpillar Information System:

1995/08/07 Description Of Service Code Information{7450,7569}

1995/07/10 Caterpillar Long Life Coolant/Antifreeze Identification{1395}

1995/05/01 Engine Air Filters{1054}

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

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

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

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

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

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

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

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

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

1995/09/25 Retrofit Of Corporate Fuel Cap To Threaded Fuel Tank Filler Neck Now Available{1273}

1995/09/25 Improved Stop Lamp Pressure Switch Available{1435,7805}

1995/10/02 Numbering The Crankshaft To Match Counterweights {1202,1231}

1995/10/09 Caterpillar Legendary Service Literature Catalog SELD0811 Updated {0374}

1995/10/09 Alternate Style Grease Gun Coupler Provides Better Service {0646}

1995/10/23 Incident Reports And Parts Involved{0336,0337}

1995/10/30 Improvements to Service Information System (SIS) 2.0 Update{0374,0375,0376}

1995/11/13 The Technical Information Feedback System Form Is Available In Electronic Mail {0374}

1995/11/13 Screw Terminal Pressure Switches Replaced By Switches With A Deutsch® DT Connector {1400}

1995/11/13 Product Identification Number Effectivity For Caterpillar Machines Equipped With Air Conditioners With R-134a Refrigerant {7320,1809}

1995/11/27 Various Size Orifice Plugs Available Through Parts Department{5050}

1995/12/11 Improved Arc Suppressors Withstand Additional Vibration and Flexing{7337,1623}