1982/05/03 Caterpillar

Use The Correct BrakeSaver Seal Group{1155}

Usage:

3406 And 3408 Truck Engines With BrakeSaver

Reference: Service Magazine, September 14, 1981, Pages 14 and 15. In the article "Changes To BrakeSaver Groups Give Longer Service Life," there was an explanation that the 5S9022 Seal was replaced by the 9N6600 Seal Group. The new seal group has the wear sleeve assembled with the seal as a unit.

The 7N1999 Seal Group for the engine crankshaft has the same seal, and looks very much like the 9N6600 Seal Group used in the BrakeSaver. But, the wear sleeve in the crankshaft seal group is 3.8 mm (.15") wider than the one in the BrakeSaver seal group.

Use of the 7N1999 Seal Group in the BrakeSaver has caused the wear ring to be forced against the metal seal ring carrier. This caused rotation of the seal ring carrier and seal ring. The result was damage to the seal ring carrier and the seal ring.

Make sure you use the correct seal in the BrakeSaver. Do not use a crankshaft seal group for this application.

See the illustration for location of the metal seal ring and the correct position of the wear sleeve of the 9N6600 Seal Group.

Location of seal ring and position of seal group wear sleeve.

Caterpillar Information System:

1982/05/03 Use New 6V4910 Clamp-On Ammeter For Easier Electrical Current Measurement{0651}

1982/05/03 Lubricant Recommendations Changed For All Caterpillar Engines To Combat Effects Of Fuel Sulfur{1318,0375,0374,1280}

1982/05/03 New 6V4950 Injection Line Speed Pickup Group Used With 6V2100 Multitach{0651}

1982/05/03 Use New Special Instruction To Install 5P6595 Insert In Cylinder Liner Seats{1216,0621}

1982/05/03 6V4960 AC Current Probe Will Measure Current Easier{0652}

1982/04/26 Expansion Tank Changed To Permit Installation Of Water Level Gauge{1354,7470}

1982/04/26 Improved Relief Valve Guide Decreases Maximum Oil Pressure During Cold Weather Starts{1315,1304}

1982/04/19 New Broken Link Spring Used In Governor{1264}

1982/04/19 Improvements Made To 6V3000 Sure Seal Repair Kit{0611,1408}

1982/04/12 Use Correct Size Bolt To Install 5P9736, 6V2156 Or 6V2157 Link Brackets{0644}

1982/04/12 New Seals Improve Pressure Regulator Group{3185,3012}

1982/04/12 Make Sure Hydraulic Pumps Are Installed Correctly{5055,5070,5073}

1982/05/03 Use 6V6018 Skiving Vise To Hold XT Hose Assemblies{0623,0626,7554}

1982/05/03 Inspection Marks On Bearings{7551,1230,1226,1203,1219,1227}

1982/05/10 Larger Press And Improved Tooling Now Available To Fabricate XT Hose{0623,0624,0664}

1982/05/10 Bolts Now Used Instead Of Studs To Hold Cylinder Heads{1101,1201}

1982/05/10 New Exhaust Tubes And Support Used{1061,1067}

1982/05/10 New Crankshaft Main Bearings Used{1203}

1982/05/10 New Mounting Bracket For Mechanical Shut-Off Cable{7418}

1982/05/10 5P4812 Gauge Group Components Available Separately{0653,1215}

1982/05/10 5P3519 Gauge Group Components Available Separately{0653,1215}

1982/05/10 Be Sure To Use Correct Water Temperature Regulators{1355}

1982/05/10 Fuel Rack Slots Have Improved Wear Resistance{1257}

1982/05/10 Two-Piece Guard For Alternator Fan And Belts{1400}