1989/12/25 Caterpillar


Improved Gaskets And Covers Used In Cover Groups, Connection Group And Water Lines Groups; New Clips Used In Water Lines Groups{1350,1063}

Usage:


3606, 3608, 3612, 3616 Engines

Description of Change: Improved gaskets and covers are used in the cover groups, water lines group and connection group. The improved gaskets can be identified by the pink-tan color. And the gaskets do not have a "bead" on the face. The flatness of the covers have been improved. New clips are used in the water lines group. The clips improve the clamping forces on the gasket under the aftercooler water lines.

Adaptable To: The improved 9Y7082 Gasket (1) and 7W0805 Cover (2) are used in the 1W0884 and 1W0906 Central Structure Cover Groups. Also, the improved 9Y7082 Gasket (1) is used in the 1W0882, 1W0916, 4W0369 and 7W4986 Water Lines Groups on 3612 and 3616 Engines.

NOTE: If leaks reoccur around the former 7W0805 Cover, an improved cover should be installed.



Illustration 1. Location of 9Y7082 Gasket and 7W0805 Cover in central structure cover groups.


Illustration 2. Location of 9Y7082 Gasket in water lines group.

The improved 9Y7084 Gasket (3) and 1W0129 Right Hand Upper Cover (4) are used in the 1W0135 and 1W0836 Central Structure Cover Group. Also, the improved gasket (3) is used in the 7C9402 Water Connection Group on 3606 and 3608 Engines.

The improved 9Y7083 Gasket (5) and 2W8313 Cover (6) are used in the 1W0135 and 1W0836 Central Structure Cover Group on 3606 and 3608 Engines.



Illustration 3. Location of 9Y7084 Gasket, 1W0129 Right Hand Upper Cover, 9Y7083 Gasket and 2W8313 Cover in central structure cover group.

The new 9X2646 Clips (7) and 9X2647 Clips (8) are used in the 1W0811, 1W0847, 4W0373 and 7W3783 Water Lines Group.


Illustration 4. Location of clips.

All the above components are adaptable to earlier 3600 Engines.

Caterpillar Information System:

1989/12/25 New Valve Assembly And Washer Used In Fuel Transfer Pump Group{1256}
1989/12/25 New Fuel Return Valve Prevents Siphoning{1253,1274}
1989/12/25 New Cooling System Cleaner Now Available For All Engines{1350,0680,1352,1353}
1989/12/25 Do Not Use 1U5555 Hydraulic Hose Press Pump Group In 230 Volt Circuits{0616,5057}
1989/12/25 New Assembly Method For Track Links Makes It Easier To Install And Adjust{4169,4170}
1989/12/18 New Seal Group Used In Seawater Pump{1371,1361}
1989/12/18 Paper Liner Available For Centrifugal Oil Filters{1328}
1989/12/11 Cooling System Drain Valves Available{1372}
1989/12/11 Modification Of 2W1054 Screen Assembly For Use During Dynamometer Testing{1307}
1989/12/11 New Spark Plug Used In Ignition Groups{1555}
1989/12/11 New Camshaft And Lifter Kits Available For Slipper Type Cam Followers (Valve Lifters){1209,1210}
1989/12/11 Additional Information For Checking Valve Camshaft Timing{1105,1110,1112,1121}
1989/12/25 Improved Valve And Injector Jam Nut Used In Valve Rocker Arm Group{1123}
1990/01/15 Separate Service Manual Microfiche Library Available For Engines Only {1000,0374,0375}
1990/01/15 Service Element Available For Flexible Coupling Group {3252}
1990/01/15 Unit Injector Tips Now Have An Improved Brazing Technique {1290}
1990/01/15 New Head Gasket Used On 3306B Truck Engines {1124,1100,1101}
1980/11/24 Coolant Conditioner Elements Are Now Available For 3208 Truck Engines
1980/11/24 Kysor Air-Operated Shutdown Actuators For 3406, 3408, 1693 Truck Engines
1980/11/24 Modification Of Puller Bolt Prevents Thread Damage During Removal Of Sleeve From Sleeve Metering Fuel System{0621,1251,1253}
1980/11/24 Inspect All Engine Oil And Fuel Filter Elements Before Installation{1000,1261,1318}
1980/11/24 Check For Correct Spring Retainer On Oil Pump Bypass Valve When Oil Pan Is Removed
1980/11/24 New Decals Permit Easier Identification Of Fuel System Settings On Most Truck Engines
1981/01/23 Improvements Made To 5P9718 And 6V186 Disc Pads Used During Gasket Removal
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