1979/05/21 Caterpillar

Shorter Mounting Bolts Used For Glow Plug Wiring{1403,1412}

Usage:

D330C, 3304, D333C, 3306 Industrial And Marine Engines;
1673C, 3306 Truck Engines;
D4D, D4E, D5B, D6D, D7G, 627B, 814 Tractors;
12G, 14G, 120, 120B, 120G, 130G, 140G Motor Graders;
215, 235 Excavators;
235 Front Shovels;
518, 528 Skidders;
561D, 571G, 572G Pipelayers;
627B, 637D Scrapers;
815, 816 Compactors;
920, 930, 941, 941B, 950, 951B, 951C, 955K, 955L, 966C, 977K, 977L Loaders

Description of Change: Shorter mounting bolts are now used on the above models to fasten the glow plug wiring to the engine. Also, on six-cylinder models, new washers are used with the new bolts. Use of the new, shorter bolts will make sure the wiring brackets and the valve cover are held tightly before the bolts make contact with the bottom of the bolt holes. Formerly, on some engines, the bolts made contact with the bottom of the holes before the wiring brackets and valve cover were tight. This permitted loose wiring and oil leakage.

Adaptable As: Direct replacement. On four-cylinder models, use two new 1C569 Bolts in place of the former two 2H3755 Bolts. On six-cylinder models, use three new 1C569 Bolts and three new 9M1974 Washers in place of the former three 2H3755 Bolts and three 1Y462 Washers.

Caterpillar Information System:

1979/05/14 Two Fuel Pressure Pumps Are Available To Increase Fuel Pressure{1250,1295}

1979/05/14 New Filler Bands Give A Better Seal Between The Cylinder Liners And Cylinder Block{1201,1216}

1979/05/14 5P3519 Piston Ring Gauge Has Improved Design For Better Accuracy And Easier Use; Corrected Information For Use On Pistons That Have Two Ring Grooves{0653,1214}

1979/05/14 How To Adapt The 5P1759 Tachometer Drive Group (Dealer Tool) To D9H Tractors, 594H Pipelayers And D353 Engines Equipped With Electric Hour Meters When Engine RPM Must Be Checked{0654}

1979/05/14 New BrakeSaver Manifold Prevents Oil Leakage{1155}

1979/05/07 Serialized Attachments Added To Machine Parts Books{0375}

1979/05/07 New Oil Pump Has Improved Relief Valve For Better Pressure Control{1304}

1979/05/07 An Ammeter Calibration Group Is Now Available{0651}

1979/05/07 Change In Part Number Of Water Temperature Regulator Used In Attachment Oil Cooler Groups{1355,1378}

1979/05/07 Part Numbers Of Bearings To Use For Service Replacement In Fuel Injection Pump Housings For Sleeve Metering Fuel Systems; Correction To Special Instruction For Installation.{1253}

1979/05/07 New Hose Assembly Will Give Longer Service Life With High Oil Temperatures{3314}

1979/05/07 New 6V116 Water Sleeve Removal Tool Is Available{0621,1101}

1979/05/21 New Flywheel Housing Corrects Clearance Problem With Cylinder Block{1157,1158,1201,1453}

1979/05/21 Do Not Use Later 9N3979 Nozzle Assemblies In Plate Of Earlier Nozzle Assemblies{1254}

1979/05/21 How To Prevent Cylinder Block Failure From Cracks{1201}

1979/05/21 New Washers For Injection Valve Nozzles Must Be Added To Valve Grinding Gasket Kit When Used With Later Engines{7555,1254}

1979/05/21 Rod Bearings For Parts Service Have Reliefs (Grooves) Cut On The Outside Diameter{1219}

1979/05/28 9S8100 Tool Group Changed To Use With Fuel Transfer Pump Only{0622}

1979/05/28 A New Method To Clean And Polish Engine Valve Stems{0674,1105}

1979/05/28 Seat Belt Maintenance{7327}

1979/05/28 New Type Products Available To Clean Cooling Systems{1350}

1979/05/28 Correct Locations To Connect Gauges For Checks Of Engine Oil Temperature And/Or Pressure{7455,7450,1300}

1979/06/04 New "L-Shaped" Clutch Plates Now Used{3302}

1979/06/04 New Caterpillar Yellow Paint{0670}