1992/02/01 Caterpillar


Procedure To Repair Oil Leak At Rear Camshaft Cover{1221}

Usage:


3176 (2YG, 7LG) Truck Engines

If there is an oil leak at the rear camshaft cover, the probable source of the leak is cover mounting bolt hole (1) which intersects a camshaft bore passage in the spacer assembly. The non-pressurized oil may leak past the bolt threads to the outside of the engine.

Use the procedure that follows to repair oil leaks and to prevent oil leaks during normal camshaft cover installation.

1. Remove the rear camshaft cover from the spacer assembly.

2. Use 8T9011 Component Cleaner to thoroughly clean the threads on the three camshaft cover mounting bolts and in bolt holes (1) and (2) in the spacer assembly. Allow to dry.


Spacer Assembly viewed from rear. Location of spacer assembly bolt holes used to fasten rear camshaft cover.

3. Apply 6V1541 Quick Cure Primer to the threads on the bolts and in the bolt holes in the spacer assembly. Allow the primer to dry.

4. Put 9S3263 Thread Lock on the three bolts. Install the rear camshaft cover with the three bolts.

Caterpillar Information System:

1992/02/01 New Combustion Seal (O-Ring Seal) Used In Unit Fuel Injection Pump Group{1290}
1992/01/01 The Letter "I" Now Used In Part Numbers
1992/01/01 Use 7E5888 Fuel Injection Pump Housing As A Service Replacement For Pre 1991 Fuel Injection Pump Housings
1992/01/01 5P7437 Adapter (Part Of 8T5301 Diesel Timing Adapter Group) Must Be Modified To Work On Current Fuel Lines
1992/01/01 Use Correct Washers With Cylinder Head Bolts
1992/01/01 Engine Wiring Schematic Wall Charts Available
1992/01/01 New Cylinder Head Gasket Helps Prevent Coolant Leaks
1992/01/01 New Oil Filler Tube Assembly Helps Prevent Cracking
1991/12/01 List Of Service Publications{0374,0375}
1991/12/01 Calibration Of New Dipsticks With Full Range Readings{1326}
1991/12/01 New Gaskets Help Prevent Leaks From Fuel System Governors{1264}
1991/12/01 Only Caterpillar Approved Service Tools Can Be Used To Program Or Perform Interactive Diagnostics On Caterpillar Engines{1900}
1992/02/01 1P8116 O-Ring Seal Available To Service Unit Injectors{1290}
1992/02/01 Be Sure To Use Correct Connector/Connectors Between Fuel Transfer Pump Outlet And Tube To Fuel Filter{1274,1256}
1992/02/01 New Fuel Line Assemblies And Adapter Assembly Used{1252}
1992/02/01 List Of Service Publication
1992/03/01 Procedure For Putting 9U5839 Liquid Gasket Material On Cylinder Liner
1992/03/01 Improved Hose In Turbocharger Oil Lines Group Resists Deterioration Caused By Heat
1992/03/01 New And Improved Operation And Maintenance Manuals Available
1992/03/01 Thinner Spacer Plate Available For Parts Service
1992/03/01 Troubleshooting Electrical Noise Problems
1992/03/01 New Electronic Control Groups (Rack Position Sensor And Timing Position Sensor) Provide Increased Reliability
1992/03/01 Videotapes Provide 3406 Truck Engine Maintenance Information
1992/03/01 9U5839 Liquid Gasket Material Available For Use With Aluminum
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