1977/03/07 Caterpillar

Drains In New Fuel Injection Pump Housing And Governor Housing Prevent Possible Corrosion And Freezing Damage{1286}

Usage:

3208 Truck, Industrial and Marine Engines Equipped with Sleeve Metering Fuel Systems;
613B Tractors, 225 Excavators

Description of Change: In the past it was difficult to drain the fuel injection pump housing and governor housing on the above engines. Now a new fuel injection pump housing assembly and a new governor housing assembly have separate drains to make this operation easier. A plug on the governor housing and the lower bolt that holds the governor housing to the fuel injection pump housing permits these housings to be drained separately. Some water in the fuel can get by the fuel filter and water separator, if so equipped, and be held in the fuel injection pump housing and governor housing. Because the housings can be drained easier, possible corrosion and freezing damage can be prevented.

Location of drain plug and bolt.

Caterpillar Information System:

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}

1977/02/28 Modification To Holder To Machine Counterbore On Cylinder Block{0664,1201}

1977/02/14 Diesel Fuel Recommendation Expanded{1280}

1977/02/14 Test Used Fuel Nozzles Before You Install New Nozzles; Tips On Test Procedures{1254,0651,0336}

1977/02/14 New 5P7307 Engine Turning Tool Group Fits All Engines{0611}

1977/02/14 Correct Use Of Plugs In Drain Holes Of Hydraulic Pumps That Have Two Seals On The Shaft-Use A Plug In Drain Hole Except With Water Glycol Systems{5055,5073}

1977/03/07 Use Insert To Repair Bearing Seat In Water Pump Housing{1361}

1977/03/07 Cooling System Orifice Changed For Better Flow Control And Air Removal{1380}

1977/03/21 New Spring Used In Fuel Ratio Control{1278}

1977/04/11 New Retainer And Improved Housing Keep Water Pump Bearing Tight; Repair For Loosened Bearing{1361}

1977/04/11 Improved Mounting For Expansion Tank{1354,1379,1380}

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}