1987/06/01 Caterpillar


Use Only Paint To Mark Connecting Rod Caps For Torque-Turn Method {1218,1219}

Usage:


All Engines

SUPPLEMENT: 08/03/87

SERVICE MAGAZINE; JUNE 1, 1987; PAGE 15, "Use Only Paint To Mark Connecting Rod Caps For Torque-Turn Method" on all engines. A reevaluation of field data indicates that there is a chance of connecting rods failing that have been center-punched as indicated. Therefore, change the last sentence to read, "Caps that have been marked with a center punch may NOT be reused."

--------------- END SUPPLEMENT ---------------

Some servicemen have used a center punch to mark the connecting rod bearing cap when using the torque-turn method to tighten the bolts. See illustration.


Location of punch marks where paint should have been used.

Do not use this method of marking the cap. Instead, mark the rod cap and bolt with a paint marker when the torque-turn method is used. Caps that have been marked with a center punch may not be reused.

Caterpillar Information System:

1987/05/25 Truck Performance Diagnostic Guide Available{0374,1219,1227}
1987/05/25 Remanufactured Heavy-Duty Starters And High-Amp Alternators{1405,1453}
1987/05/25 Improved Start Switch Used{1416}
1987/05/25 New Service Tools Available{0600}
1987/05/25 1U5796 Pressure Differential Gauge Group Available For Load Sensing Hydraulic Systems and Differential Steering System{0770,0784,5050}
1987/05/18 Improved Oil Temperature Regulator Gasket{1330}
1987/05/18 New Precombustion Chamber Seal Available{1100,1106}
1987/05/18 Be Sure Tubing Clamps That Fasten Air-To-Air Aftercooler To Air Lines Are Correctly Installed{1058}
1987/05/18 Hollow Dowel Relieves Accessory Drive Oil Leakage{1207,1166}
1987/05/18 New Plastic Water Sleeve Used{1380}
1987/05/18 Twist Drills Available{0670,0600}
1987/05/18 Check Alternator Output Connection Prior To Machine Delivery{1405}
1987/06/01 Use Correct Pistons And Rings For 3406B Truck Engines {1214,1215}
1987/06/01 Remanufactured Programmable Electronic Engine Controls (PEEC) {1250}
1987/06/01 Fuel Injector Trim Bolt {1257}
1987/06/01 Features And Servicing Of The Various Caterpillar 3161 Governors {1264,1278}
1987/06/01 Exhaust Manifold Thermocouple Has Longer Insulated Leads {1050,1408}
1987/06/15 Caterpillar Original Equipment Paint Products (U.S. And Canada) {7559}
1987/06/15 New Face Films For Electronic Monitoring System (EMS) Panels {7490}
1987/06/15 1U5495 Latch Group Available For Earlier Large Duo-Cone Seal Installers {0700,4052}
1987/06/15 New 1U5752 Retainer Tool Available To Service Hydrostatic Transmissions {0721}
1987/06/15 New 1U5230 Hand Pump (General Purpose Hydraulic) Available {0646}
1987/06/15 New Relief Valve Guide Used In Oil Pump Groups {1304}
1987/06/15 All Three Main Bearing Part Numbers Stamped On Lower Portion Of Standard Size Bearing {1203}
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