Improved Valve And Injector Jam Nut Used In Valve Rocker Arm Group{1123}
Usage:
3606 ( 8RB ),
3608 ( 6MC ),
3612 ( 9RC ),
3616 ( 1PD ) Engines
Description of Change: A hardened jam nut is now used on the adjusting screw for the injector and valve rocker arms. Repetitive assembly and disassembly of the 1D5120 Nut caused galling of the threads.
Adaptable To: The 6V5019 Jam Nut replaces the former 1D5120 Jam Nut in the 1W2480 Rocker Arm Group.
Location of 6V5019 Jam Nut.
Caterpillar Information System:
1989/12/25 Improved Gaskets And Covers Used In Cover Groups, Connection Group And Water Lines Groups; New Clips Used In Water Lines Groups{1350,1063}
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}
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
1981/01/23 Thicker Layer Of Chrome Now Used On Governor Spring Guide To Extend Its Service Life