New O-Ring Seal Used In Aftercooler Groups{1063}
Usage:
3612 (9RC),
G3612 (1YG),
3616 (1PD),
G3616 (4CG) Engines
Description of Change:
Location of new 135-6950 O-Ring Seals in typical aftercooler group.
A new O-ring seal is used in the aftercooler groups on these engines. The new O-ring seal has a Teflon coating which will aid in the assembly process. The new O-ring seal is less likely to twist during the assembly process than the former O-ring seal.
Adaptable To: The new 135-6950 O-Ring Seal is a direct replacement for the former 6V-3968 O-Ring Seal in the 1W-0888, 1W-0921, 105-3178, and 115-7563 Aftercooler Groups on the above engines. The new 135-6950 O-Ring Seal is in effect as follows:
- 3612 (9RC232, 9RC237-Up)
- G3612 (1YG101, 104, 107-Up)
- 3616 (1PD147, 197, 278-Up)
- G3616 (4CG68-Up)
- G3612 (1YG101, 104, 107-Up)
Caterpillar Information System:
1997/05/01 New Electronic Pyrometer And Instrument Panel Mounting Group Improves Reliability{7451,7466}
1997/05/01 New Oil Pan Drain Groups Allow More Oil To Be Removed From The Oil Pan{1302}
1997/05/01 Improved Cylinder Liner Has Longer Service Life{1216}
1997/05/01 Structural Improvement To Piston Permits Removal Of Piston Coatings{1214}
1997/05/01 New Rocker Arm Cover Base Assembly Has Threaded Inserts For Increased Durability{1120}
1997/05/01 New Engine News Special Edition, Product Support Update-3500 Diesel Commercial Engines, SEBD9243 Is Available{1000}
1997/05/01 3408C And 3412C High Performance Marine Engine Software Release{1920}
1997/05/01 New Electronic Actuator Group (Flo-Tech 68) Provides Improved Stability{1907}
1997/05/01 New Basic Exhaust Bypass Groups Include New Valve And New Diaphragm{1057}
1997/05/01 Procedure To Investigate Misfires On Engines Equipped With Electronic Unit Injectors (EUI){1290}
1997/04/01 New Two-Piece Clamp Assembly Prevents O-Ring Bore Wear And Leakage{7554}
1997/04/01 Improved EG-3P Actuator Assembly For 3406 Engines{1903}
1997/05/01 Improved Combustion Gasket Provides Better Control Of Combustion Chamber Crevice Volume{1124}
1997/05/01 Improved Camshafts Provide Longer Service Life{1210}
1997/05/01 Recommended Operating Procedure And New Change Criteria For Vokes Fuel Filters{1261}
1997/05/01 Increased Oil Flow Rates From Inlet Valve Metering Pump{1300}
1997/05/01 Improved Spark Plug Has Increased Service Life{1555}
1997/05/01 Part Number Cross-Reference For Caterpillar And Vulkan© Engine Output Flexible Coupling Groups{3279}
1997/05/01 Special Instructions Available For Calibration Of Temperature And Pressure Contactors{7403,7404,7407,7408,7414,7417,7418}
1997/05/01 New Alternator Now Used{1405,7168}
1997/06/23 Mechanical Unit Fuel Injector Groups Spill Shield Changed {1290}
1997/06/23 New Deeper Oil Pan Used In Oil Pan Group; New Oil Level Gauge Marking Chart {1302,1326}
1997/06/23 New Chrome-Plated Stem On Exhaust Valve Increases Valve And Valve Guide Wear Life {1105,1100}
1997/06/23 New Fuel Injectors Reduce Oil Carryover {1290}