1982/02/01 Caterpillar

New Engine Testing And Adjusting Tools Give More Accuracy And Longer Service Life{0651}

Usage:

Reference: Service Magazine, September 8, 1980, Page 5.

In the article "4S6553 Engine Evaluation Test Instrument Group Has Been Canceled," you were told of problems with availability of this group at the source of supply. Replacement components of this test instrument group will be available until the current quantities are exhausted.

Owners of the 4S6553 Engine Boost Group can still use it, but it is Caterpillar's recommendation that it be used in non-critical applications. In critical applications the new 6V3121 Digital Multitach Group should be used along with the 6V3150 Low Pressure Group for speed adjustments. This new group has an accuracy of ± 1 RPM instead of ± 50 RPM with the 4S6553 Group.

The 4S6997 Dual Boost Gauge, 1P7443 Tachometer and 1P7444 Tachometer Generator can still be repaired by:

Aircraft Instrument & Development Co.
317 E. Lewis
Wichita, Kansas 67202
U.S.A.

Caterpillar Information System:

1982/02/01 New Flywheel Assemblies Used{1156}

1982/02/01 New Inlet And Exhaust Valves And Exhaust Inserts Available{1101,1103,1105}

1982/02/01 Bent Lever For Fuel Shut-Off Solenoid Can Cause Low Engine Performance{1286,1259}

1982/02/01 Gasket Kits{7555}

1982/01/25 New Crankshaft Seal Group Has Assembled Rear Seal And Wear Sleeve{1161}

1982/01/25 Service Recommendation: Clean Hydraulic Filter Housing{5068}

1982/01/25 New Liner Seat Insert With O-Ring Seal Available{1217,1216}

1982/01/25 New Parts Used In Hydramechanical Shut Off; Prefill Oil Pump{7418}

1982/01/25 New Washers Permit Locks To Hold Better{1252}

1982/01/25 New Tools Available For Installation Of Cylinder Liner Seats; Service Tools For Counterboring Tool Group{0622,1217}

1982/01/18 New Torque Specification For Bushing{0374,1253,1251}

1982/01/18 Piston And Connecting Rod Assembly Storage Cabinet{0600}

1982/02/08 New Piston Pin Retainer Used{1214,1225}

1982/02/08 The Service Publications Information Feedback System{0374}

1982/02/08 New 6V4818 Driver Available To Install Rack Bearings In Fuel Injection Pump Housings{0622}

1982/02/08 Use Microfiche Libraries For Up-To-Date Information{0374}

1982/02/15 New 6V4810 Tool Group Used To Service Vehicles Equipped With VE (Vehicular Environmental) Series Electrical Connectors In Electrical Harness{0610,0620}

1982/02/15 Hose Assembly Moved To A New Position{1274}

1982/02/15 New Camshaft Has Improved Profile (Shape) Of Exhaust Cams{1210}

1982/02/15 New Fuel Nozzle Adapter Assembly Used{1106}

1982/02/15 Stronger Spanner Wrenches Now Available{0612,0613}

1982/02/22 Torque/Pressure Conversion Table For 6V200 Hydraulic Wrench{0614,0623}

1982/02/22 Improved Bearing Used In Rear Power Takeoff Groups{3055}

1982/02/22 New Poppet Valve Will Decrease Chatter{3313}