New Specification For Adjustment Of Jacobs Engine Brake{1119}
Usage:
All 3406 Truck Engines So Equipped
There has been a change to the specification for the adjustment of the slave piston for the Jacobs Engine Brake, when used on 3406 Truck Engines. The slave piston lash setting of 1.52 mm (.060") is now used on all 3406 Truck Engines equipped with a Jacobs Engine Brake.
Formerly, two settings were used, one for the 360 horsepower PCTA engine, and one for all other engines. The setting of 1.52 mm (.060"), which was used on 360 horsepower PCTA engines, is now used for all engines.
Make a note of this change in your Service Manual.
Caterpillar Information System:
1983/05/09 Change Made To FT1535 Idler Bearing Puller{0621,4167}
1983/05/09 New Service Tools Available{0600}
1983/04/25 Remove Plastic Plug From Fuel Transfer Pump{1256}
1983/04/25 New Gasket And Cover Used On Governors{1264}
1983/04/25 Changes To Valve Clearance Settings{0374,1105,1250}
1983/04/25 Breather Now Made Of Steel Instead Of Plastic{5163,4059,4114,3154,4003}
1983/04/25 Valve Spring Retainers Now Have Thicker Flanges{1108}
1983/04/18 New Reconditioning Specifications For Cylinders Decrease Piston Scuffing And Seizure {0374,1223,1216,1201}
1983/04/18 SIRS Index Contains Product Update Information {7570,0374}
1983/04/18 Cutting Threads For Caterpillar Taperlock Studs {7553}
1983/04/18 Pistons With Thicker Top Rings Must Be Used In Correct Applications {1214,1215}
1983/04/18 Repair Kit For Diesel Fuel Heater Available {1296}
1983/05/09 Change 6V3060 EGR Testers To LES Testers{0651,1080}
1983/05/09 New Turbocharger Has Thicker Mounting Flange To Prevent Breakage{1052}
1983/05/09 New Fuel Nozzle Adapters Used{1106}
1983/05/09 Balancer Shaft And Gear Now Available Separately{1220}
1983/05/09 Installation Of Bearing For Connecting Rod Piston Pin{1219}
1983/05/09 Use 6V7777 Spacer With 9S6030 Front Oil Seal Installer{1160,0622}
1983/05/09 New Lower Radiator Hose{1380,1353}
1983/05/09 New Fuel Setting Information{0374,1257,1286}
1983/05/09 New Piston Ring Group Available For Higher Horsepower Applications{1215,1214,1213,1226}
1983/05/16 New Specification For Clearance Between Fuel Rack Slot And Cross Link{1257}
1983/05/16 Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks{0622,0675,1201,1202}
1983/05/16 Selection Of The Correct Battery For Use With Diagnostic Tools{1401,0650}