1979/05/14 Caterpillar

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}

Usage:

The use of electric hour meters on D9H Tractors, 594H Pipelayers and D353 Engines has caused a service problem when engine RPM must be checked. With the electric hour meter, the service meter group is not used, and a cover is installed over the opening on the engine. Since the drive shaft for the service meter is used as a drive for the 5P1759 Tachometer Drive Group, the tachometer cannot be connected to check engine RPM.

To prevent this problem, the parts shown in the chart can be used with the 5P1759 Tachometer Drive Group as a service tool. These parts are components of the service meter group and can be used with the tachometer drive when needed. Use the parts only as a tool; do not install them permanently in the engine.

To check engine RPM, remove the cover from the opening on the engine and install the bearing and shaft with seals in place. Install the 5P1759 Tachometer Drive Group and connect the tachometer. After adjustments are made, remove all parts and install the cover again.

Caterpillar Information System:

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}

1979/04/30 New Design Exhaust Gasket Used In Air Lines Group{1061}

1979/04/30 Liner Seat Insert Now Available{1217}

1979/04/30 Improved Gasket Now Used Between The Flywheel Housing And The Cylinder Block{1157,1201}

1979/04/30 Seals (Double-Lip Type) Made Of Viton Material Are Now Used In Vickers Pumps Which Have Steel-Backed Bronze Plates Between Rotor And End Plates{5055}

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

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

1979/05/21 Shorter Mounting Bolts Used For Glow Plug Wiring{1403,1412}

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}