Gasket For Water Temperature Regulator Now Has Larger Vent Passage{1355,7555}
Usage:
3304 and 3306 Engines
Description of Change: A gasket that is .090" (2.28 mm) thick is now used between the cylinder head and the water outlet elbow. Formerly, a gasket .062" (1.57 mm) thick was used at this location. The thicker gasket gives a larger vent passage to let air get past the temperature regulator and out of the cylinder block and cylinder head in a shorter period of time.
Adaptable As: The new 7N944 Gasket is a direct replacement for the former 2P2715 Gasket which is canceled.
Caterpillar Information System:
1977/04/18 Stronger Material Used In Undersize Connecting Rod Bearings{1219}
1977/04/18 New Crankshaft Front Seal And Wear Sleeve Permit Crankshafts With Seal Wear To Be Used Again{1151,1160}
1977/04/18 Tools To Remove Wear Sleeves From Crankshafts{0621,7558}
1977/04/11 New Diaphragm Used In Brakesaver Control Valve{1159}
1977/04/11 New Shaft Assemblies Used For Forward And Reverse Clutch And Stronger Nipple Used At Oil Pump{3302,3306,3307,3310,3314}
1977/04/11 Improved Mounting For Expansion Tank{1354,1379,1380}
1977/04/11 New Retainer And Improved Housing Keep Water Pump Bearing Tight; Repair For Loosened Bearing{1361}
1977/03/21 New Spring Used In Fuel Ratio Control{1278}
1977/03/07 Cooling System Orifice Changed For Better Flow Control And Air Removal{1380}
1977/03/07 Use Insert To Repair Bearing Seat In Water Pump Housing{1361}
1977/03/07 Drains In New Fuel Injection Pump Housing And Governor Housing Prevent Possible Corrosion And Freezing Damage{1286}
1977/03/07 Improved Shut-Off Solenoids For Engines Equipped With Sleeve Metering Fuel Systems{1259}
1977/04/18 Guide Assembly For Dipstick (Oil Level Gauge) Now Has Thicker Walls{1300}
1977/04/25 Alternator Groups With Slower Drive RPM Used Again{1205,1405}
1977/04/25 New Piston Pin Bearing Used In Connecting Rod Assembly{1218}
1977/04/25 New Oversize Connecting Rod Bearings Have Improved Design And Material{1219}
1977/04/25 Improved 5P3000 Engine And Transmission Shipping Stand Assembly; Modification Available For Stands Already In Use{0640}
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 New Socket Assembly To Tighten The Bolts That Fasten The Sleeve Levers To The Sleeve Shaft{0621,1250}
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}
1977/05/02 Improved Keystone Piston Assembly{1214,1216}
1977/05/02 Special Tools For Complete Repair Of Water Pump In Direct Injection Engines{0620,1361}
1977/05/09 Special Torque Wrenches Use Noise As Indication Of Correct Torque Application{0614}
1977/05/09 New Rotor Assembly For Engine Oil Pump Has A Drilled Passage For Better Lubrication Of Oil Pump Bearing{1304}