1983/09/12 Caterpillar

New Larger Auxiliary Sea Water Pump Operates At Lower RPM{1371}

Usage:

3208 Marine Engines

Description of Change: A new auxiliary sea water pump is used on 3208 Marine Engines. The new pump has a larger diameter impeller with more vanes which gives the correct amount of coolant flow at the decreased speed of the new pump. The vanes on the new impeller are thinner and more flexible than the vanes on the former impeller. The new impeller and the decreased speed of the new pump group will help give it a longer service life than the former pump group.

Adaptable As: The new auxiliary sea water pump group is a direct replacement for the former pump group when used together with the new lines group and belt guard group shown in the chart.

See Illustration 1 for the location of the parts used in the new pump group and new lines group. See Illustration 2 for the location of the parts used in the new belt guard group.

Illustration 1. Location of parts in new pump and lines group.

NOTE: Use two 7B3235 Bolts, two 1D4719 Nuts and two 2M849 Washers to fasten the 4W3172 Bracket to the engine front support.

A 2W9253 Pump Kit is available when it is necessary to make a replacement of the impeller, gasket or seals in the 1W9046 Pump Group (part of the 2W9142 Pump Group).

Illustration 2. Location of parts in new belt guard group.

Caterpillar Information System:

1983/09/05 Engine Maintenance Information Films Available{1318,1352,0375}

1983/09/05 Vent Hole In Water Temperature Regulator Cover Removed{1355}

1983/09/05 6V3100 Engine Timing Indicator Group May Have 6V9710 Or 6V2192 Transducer{0651}

1983/09/05 New Piston Oil Rings{1215}

1983/09/05 Larger Oil Pump Used To Give Better Clutch Cooling And Bearing Lubrication{3310,3302,3307}

1983/09/05 Replacement Counterweights And Information For Replacement Of Counterweights And Balancing The Crankshaft{1202,0652}

1983/09/05 Service Information Available For Altronic Ignition System{1552}

1983/09/05 New Inspection Report Forms Available{0336,0372,7550}

1983/08/22 New Governor Drive Gears And Weight Assemblies{1264}

1983/08/22 Improved Voltage Regulator Assembly Now Used{4450,4467}

1983/08/15 Replacement Parts And Service For 6V3021 Crimping Tool And 6V3022 Cable Cutter{0610}

1983/08/15 New Water Seals Used In Cylinder Head Groups{1115,1101}

1983/09/12 New Dust Covers Available For Twin Disc IBF318 And IBF321 Rear Power Take-Off Clutches{3055}

1983/09/12 Parts Service Information For Pistons, Connecting Rods, Piston Pins And Rings{1214,1225,1215,1218}

1983/09/26 Oil Shield And Rotocoil Must Be Installed Together For Acceptable Oil Control{1109}

1983/09/26 Service Information For Woodward Governors{0374,1264}

1983/09/26 New Bearing Used On Main Shaft{3303}

1983/09/26 Product Identification Number To Replace Serial Number On Earthmoving Equipment{7557}

1983/10/03 Use 6V6070 Tool Group And New Adjustment Procedure For New Scroll Fuel System{0654,1264,1278}

1983/10/03 New Oil Pump Has Bypass Valve And Oil Return Passage Inside The Pump{1304}

1983/10/10 S.O.S Program Synopsis{1318,5068,3179,0652}

1983/10/10 New Connecting Rod And Main Bearings Used{1203,1219,1226,1227,1230}

1983/10/10 Changes Made To Identification Marks On Connecting Rod Assemblies{1218}

1983/10/10 New Service Centers For 6V3100 Engine Timing Indicator Group{0651}