New Clearance Specifications For Oil Pump Rotor Tip
Usage:
All 3208 Truck Engines
The specifications for oil pump rotor tip clearances have been changed. The specifications shown in the Service Manuals were for the measurement of rotor tip clearance when an inspection fixture was used. These specifications did not make use of the tolerances of the timing gear cover and permitted less clearance. The new specifications, to be used while the components are installed in the timing gear cover, are as follows:
Clearance of oil pump rotor tip (New)
-
- ... 0.05 to 0.20 mm (.002 to .008 ")
Maximum permissible clearance for oil pump rotor tip
-
- ... 0.28 mm (.011")
Make a note of this change in the Service Manuals for these engines.
Oil Pump Rotor Tip Clearance.
Caterpillar Information System:
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1981/09/23 Low Idle Instability: New Low Idle Setting
1981/09/23 New Exhaust Gas Recirculation Solenoid Used
1981/09/23 One-piece Panel Used For Oil Pan Sound Suppression
1981/09/23 Timing Pin Removed From Governor And Fuel Injection Pump Group; Change To Service Manuals
1981/09/23 Spring Pins No Longer Used In Water Pump Drive Gear
1981/09/23 Troubleshooting: Water Pump Failures
1981/09/23 FT1632 Bolt Used During Removal Of Sleeve From Sleeve Metering Fuel System
1981/09/23 Changes To Brakesaver Groups Give Longer Service Life
1981/09/23 Comparison And Applications Of Six And Eight Counterweight Crankshafts
1981/09/23 Higher Torque Used With Later Head Bolts
1981/09/23 Use Only EPA-Approved Rack And Idle Setting; Change Seal, Data Plate
1981/11/13 Oil Pan Drain Plug Has More Threads
1981/11/13 Bolt Torque Specifications Changed For Crankshaft Pulley And Power Take-off Adapter
1981/11/13 Reference Chart For Major Production Changes On 3208 Truck Engines
1981/11/13 New Cylinder Block Permits Use Of A Small-frame Turbocharger
1981/11/13 Service Manual Information About Inside Diameters Of Valve Guides
1981/11/13 Part Number For Fuel Injection Pump Group In New Location
1982/01/13 New 6V4190 Auto Programmer Group And 6V4865 Auto Programmer Connector Used With 6V2100 Multitach
1982/01/13 New Springs For Timing Advance Used In Governor And Fuel Pump Drive Group
1982/01/13 "SIRS User Instructions" Available
1982/01/13 New Regulator Assemblies Used
1982/01/13 New Torque Specification For Bushing
1982/01/13 List Of Service Publications