1978/03/27 Caterpillar

Correct Adjustment Of The Governor Control Linkage In Truck Engines Is Necessary To Prevent Low Power{1265,1269}

Usage:

All Truck Engines With Break-Over Governor Control Linkage

Many times the problem of low power in the above truck engines is caused by the governor control linkage which can change adjustment, especially as the truck "breaks in". If there is a report about low horsepower in an engine, the first thing to check is the adjustment of the governor control linkage. To check the linkage adjustment, push the pedal down until it hits the stop. If the linkage adjustment is correct, the governor linkage will move to the break-over position when the pedal is against the stop. This is shown by clearance on both sides of the tang (see the Illustration). When there is clearance on both sides of the tang, the governor linkage is adjusted correctly to permit the engine to operate at high idle. If clearance is not present on both sides of the tang, adjust the governor linkage to give the needed clearance.

Governor control linkage adjustment.

Caterpillar Information System:

1978/03/27 More Torque Now Used To Tighten The Retainer Nut For Turbocharger Compressor{1052,1053}

1978/03/27 5P4149 Conversion Group To Become A Discontinued Item On October 1, 1978{0650,1254}

1978/03/27 How To Find Correct Oil Change Intervals For Truck Engines Operated In Short Distance Applications (Pick Up And Delivery Service){1318,7500,0374}

1978/03/27 9N3700 Or 9N3299 Nozzle Assemblies Must Be Used On 3208 Engines That Are Equipped With Exhaust Gas Recirculation (EGR){1254}

1978/03/27 Improved Thrust Washers Now Used With Planet Gears{3000,3072,3106,3110,3003,3001,3100,3116,3159,3176,3107,5150,5165}

1978/03/27 5P8675 Extension Handle Available For General Uses{0614}

1978/03/27 Use 5P8706 Die Repair Kit For The Repair Of 9S6331 Die Assembly{0623}

1978/03/20 "Danger Do Not Operate" Tags Now Available{0374}

1978/03/13 The Causes And Reduction Of White Exhaust Smoke During Cold Engine Starts; Maintenance Aids Available To Decrease This Problem{1250,1383,1050}

1978/03/13 Soft Washers And Lockwashers Are Now Used With The Mounting Bolts For Air-Fuel Ratio Control{1278,1264}

1978/03/13 When A 6N5906 Hour Meter Will Not Operate Correctly, Check The Electrical Supply Before A Replacement Hour Meter Is Installed{7480,1400}

1978/03/13 5P8687 Tee Test Tooling Group{0651,5050}

1978/04/03 Procedure For Alignment Of Transmission Mounting Parts On 1100 Series And 3208 Truck Engines With Allison MT640, MT650, And AT540 Series Transmissions{3000,1156,1157}

1978/04/03 A Gasket Group Is Available To Give Improved Sealing For The Oil Supply To The Rocker Arms On Early Engines{1101,1102,1221}

1978/04/10 New Piston Group With Better Service And Operation Characteristics Now Available{1214}

1978/04/10 New 5P9693 Reusable Cable Tie For Storage Of Wires, Cables And Tubing{0630}

1978/04/10 New Lifting Eye Group Used On 3412 Industrial Engines Equipped With Turbochargers{1101,1000}

1978/04/17 Improved Yokes, Hardened Washers And More Torque Keep Valve Lifter Guides Tight {1209}

1978/04/17 Locating Bushings For The 5P3550 Rod Boring Machine Will Now Hold Tapered Piston Pin Bushings {0626}

1978/04/17 Improved Oil Suction Tube Assembly {3300,3302}

1978/04/24 Use 6V100 Tool Arrangement To Remove And Install Piston Pin Bearings For Both Tapered And Standard Connecting Rods{0620,1218}

1978/04/24 Do Not Use The 5B1401 Cleaning Tool Group To Clean The Orifice In Capsule-Type Fuel Injection Nozzles{0650,1254}

1978/04/24 Oil Grooves And Harder Gears Are Now Used In The Oil Pumps On 6.25" Bore Vee Engines{1304}

1978/04/24 Cylinder Block Has New Cover With An Oil Return Connection For Rockford Fan Drive{1201}