1977/04/11 Caterpillar

Improved Mounting For Expansion Tank{1354,1379,1380}

Usage:

3208 Marine Engines

Description of Change: Starting with serial number 75V2470, a new expansion tank group with an improved mounting was installed to decrease stresses in the tank and brackets. This prevents possible cracks in the expansion tank and alignment problems which were more probable with the former mounting. A new water lines group and heat exchanger group were also installed.

NOTE: If this change is made to earlier engines, make sure the tube bundle is changed. The new tube bundle has five baffles and the former four baffles which control the water flow direction. Only the tube bundle from the heat exchanger group is shown in the parts chart because it must be changed for any field conversion.

Adaptable To: All earlier 3208 Marine Engines when all of the parts in the chart that follows are installed.

Location of new parts for expansion tank mounting.

Location of parts needed for water lines group.

View B-B of water lines group.

Side view of water lines group.

Caterpillar Information System:

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}

1977/03/07 Relief Valve Added To Lubrication And Testing Group For Sealed And Lubricated Track{0651,0671,4175}

1977/02/28 Changes To Retainer Nut Torque And Assembly Procedures For Turbocharger Compressor Wheels{0374,1052}

1977/02/28 Improved Exhaust Valve Now Available{1105}

1977/02/28 Lock Now Available For Connecting Rod Bolt Used In TU-FL0501 Air Compressor{1065}

1977/02/28 Clip Now Used To Hold Coolant Line For The Turbocharger{1052,1380}

1977/02/28 Hardened Washers Now Used Between The Bolt Heads And The Engine Front Support To Keep These Bolts Tight{1153}

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 New Diaphragm Used In Brakesaver Control Valve{1159}

1977/04/18 Tools To Remove Wear Sleeves From Crankshafts{0621,7558}

1977/04/18 New Crankshaft Front Seal And Wear Sleeve Permit Crankshafts With Seal Wear To Be Used Again{1151,1160}

1977/04/18 Stronger Material Used In Undersize Connecting Rod Bearings{1219}

1977/04/18 Gasket For Water Temperature Regulator Now Has Larger Vent Passage{1355,7555}

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}