New Idler Pulley Groups Improve Service Life Of Vee-belt
Usage:
3208 Truck Engines
Description of Change: A new hydraulic steering mounting group and idler pulley group are used on 3208 Truck Engines. The new groups have a new idler pulley bracket that moves the pulley forward a small amount and gives better alignment of the idler pulley and crankshaft pulley. This will increase the service life of the vee-belt.
Adaptable To: The new 1W9109 Bracket is a direct replacement for the former 9N776 Bracket on 3208 Engines with Serial Nos. 32Y68441-Up and 2Z1820-Up.
The new bracket is used in the groups shown in the chart.
Caterpillar Information System:
1981/09/09 Top Rings For Pistons Have Two Designs
1981/09/09 Different O-ring Seals Used In Exhaust Gas Recirculation Actuator Group
1981/09/09 6V3100 Diesel Timing Indicator Group Available To Check Engine/Fuel System Timing And Mechanical Advance During Operation
1981/09/09 Improvements To Optional Modification Of 5P4150 Nozzle Tester
1981/09/09 Standard Interval For Oil Changes Now 20,125 Kilometers (12,500 Miles) Or 250 Service Hours
1981/09/09 Certification Film Necessary On Engines Adjusted For High Altitude Operation
1981/09/09 O-Ring Seal Materials And Applications: Use Only The Correct Seal For The Specific Installation
1981/09/09 Use Of Different Anti-seize Compound Prevents Problems With S.O.S. Tests
1981/09/09 Troubleshooting The Fuel Ratio Control Group For Low Power Complaints
1981/08/18 New Information System For Engine Gasket Kits
1981/08/18 New Spacers Used With Larger Valve Springs
1981/08/18 Use 6V4805 Valve Seat Extractor Group To Remove Valve Seat Inserts
1981/09/09 List Of Service Publications
1981/09/09 Explanation Of Differences In Timing Advance Information
1981/09/09 Thrust Washer Used In Pump Housing For Sleeve Metering Fuel System
1981/09/23 Use Only EPA-Approved Rack And Idle Setting; Change Seal, Data Plate
1981/09/23 Higher Torque Used With Later Head Bolts
1981/09/23 Comparison And Applications Of Six And Eight Counterweight Crankshafts
1981/09/23 Changes To Brakesaver Groups Give Longer Service Life
1981/09/23 FT1632 Bolt Used During Removal Of Sleeve From Sleeve Metering Fuel System
1981/09/23 Troubleshooting: Water Pump Failures
1981/09/23 Spring Pins No Longer Used In Water Pump Drive Gear
1981/09/23 Timing Pin Removed From Governor And Fuel Injection Pump Group; Change To Service Manuals
1981/09/23 One-piece Panel Used For Oil Pan Sound Suppression