Shorter Bolts Now Used In Exhaust Manifold Support{1059}
Usage:
3408 Truck Engines
Description of Change: Two of the bolts used to hold the 9N2585 Exhaust Manifold Support to the flywheel housing are now .25" (6.4 mm) shorter. The location of these bolts is on each side of the oil supply hole for the air compressor. The former bolts were too long and some time hit the bottom of the holes before they were tight. When the bolts hit the bottom of the holes before they tighten, engine oil can leak from between the support bracket and flywheel housing.
Adaptable To: All 3408 Truck Engines.
Location of bolts.
Caterpillar Information System:
1977/05/09 New Rotor Assembly For Engine Oil Pump Has A Drilled Passage For Better Lubrication Of Oil Pump Bearing{1304}
1977/05/09 Special Torque Wrenches Use Noise As Indication Of Correct Torque Application{0614}
1977/05/02 Special Tools For Complete Repair Of Water Pump In Direct Injection Engines{0620,1361}
1977/05/02 Improved Keystone Piston Assembly{1214,1216}
1977/05/02 Improved Cylinder Block With Spacer Plate Used With New Cylinder Heads, Cylinder Head Gaskets, Cylinder Liners And Timing Gear Housing{1101,1162,1201,1216}
1977/04/25 New Socket Assembly To Tighten The Bolts That Fasten The Sleeve Levers To The Sleeve Shaft{0621,1250}
1977/04/25 Revision Of Engine Data Sheet Gives Important Information On Single-Bearing Generators Assembled To Cat Engines{1156,4450,0354}
1977/04/25 Improved 5P3000 Engine And Transmission Shipping Stand Assembly; Modification Available For Stands Already In Use{0640}
1977/04/25 New Oversize Connecting Rod Bearings Have Improved Design And Material{1219}
1977/04/25 New Piston Pin Bearing Used In Connecting Rod Assembly{1218}
1977/04/25 Alternator Groups With Slower Drive RPM Used Again{1205,1405}
1977/04/18 Guide Assembly For Dipstick (Oil Level Gauge) Now Has Thicker Walls{1300}
1977/05/09 Improved Air Cleaner Group{1051}
1977/05/09 New Information On Caterpillar Cooling System Inhibitor{1350}
1977/05/09 New Fuel Nozzle Assembly Available{1254}
1977/05/16 Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures{1209}
1977/05/16 New 5P4185 Fuel Pump Timing Pin To Be Used Only On 3408 And 3412 Engines{0650,1257}
1977/05/16 Stronger Guide Assembly For Oil Level Gauge Used On Caterpillar-Built Engines In Massey-Ferguson Tractors{1300}
1977/05/16 Use Special Instruction Form SEHS6929 For Repair And Maintenance Information On All Roll-Over Protective Structures (ROPS){7323,7325}
1977/05/16 Flare Nut Wrenches Available{0610}
1977/05/23 Parts In 1P3075 Seal Puller Group Available Separately{0621,1160,1161}
1977/05/23 Orifice In Oil Supply Passages Of BrakeSaver Stator Prevent Seal Leakage{1155}
1977/05/23 Install New Plugs To Prevent Oil Leaks At The Oil Filter Base{1306}
1977/05/23 Method Of Piloting Power Generator To Engine Improved{1156,1157,4450}