1983/10/03 Caterpillar


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

Usage:


All Engines Equipped With New Scroll Fuel System

SUPPLEMENT: 11/07/83

SERVICE MAGAZINE, OCTOBER 3, 1983, PAGE 5. Put a mark through the article "Use 6V6070 Tool Group And ..." and make reference to a new article with the same title in this publication. The new article has some changes in the chart.

--------------- END SUPPLEMENT ---------------

The new 6V6070 Governor Adjusting Tool Group has the tools that are needed to check and adjust the rack and the fuel ratio control linkage on all engines with New Scroll Fuel Systems (NSFS). This new tool group is a replacement for the former 6V4095 and 6V4096 Groups which are canceled. All of the tools in the former groups except for the 6V2128 Compressor are still available for parts service. The 6V2128 Compressor is canceled. The former 6V4096 Group had tools to check and adjust the governors on 3204, 3304 and 3306 Engines. The former 6V4095 Group had all the tools that were in the 6V4096 Group plus the special tools which were needed to disassemble and assemble the fuel pumps and governors on 3204, 3304 and 3306 Engines.

Two of the new tools in the 6V6070 Group are the 6V7941 Overfueling Spring Compressor and 6V7942 Hook. The compressor is a replacement for the former 6V2128 Compressor. The new 6V7941 Compressor has enough movement so it can be used on 3204, 3304, 3306, and 3406 Engines with NSFS. The former 6V2128 Compressor did not.

The 6V7942 Hook is used to pull the rack against the rack centering pin on engines with negative rack settings. This is because on some of these engines the overfueling spring may not move the rack against the centering pin.

A new procedure is now used to check and adjust the rack on these engines. Special Instruction, Form SEHS8024, has complete information for the use of the new tools.

The components of the new 6V6070 Tool Group are shown in the chart that follows.

Caterpillar Information System:

1983/09/26 Product Identification Number To Replace Serial Number On Earthmoving Equipment{7557}
1983/09/26 New Bearing Used On Main Shaft{3303}
1983/09/26 Service Information For Woodward Governors{0374,1264}
1983/09/26 Oil Shield And Rotocoil Must Be Installed Together For Acceptable Oil Control{1109}
1983/09/12 Parts Service Information For Pistons, Connecting Rods, Piston Pins And Rings{1214,1225,1215,1218}
1983/09/12 New Dust Covers Available For Twin Disc IBF318 And IBF321 Rear Power Take-Off Clutches{3055}
1983/09/12 New Larger Auxiliary Sea Water Pump Operates At Lower RPM{1371}
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}
1983/10/03 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}
1983/10/10 New Water Pump Oil Seal Prevents Leaks{1361}
1983/10/17 Broken Edge Filter Or Plugged Cylinder Head Adapter Can Cause Rough Engine Operation Or Low Power{1252}
1983/10/17 Changes Made To Air Intake Shut-offs And Contactor Groups{1078}
1983/10/17 New Air Starting Motor Has A Slip-Clutch Type Drive Gear{1451}
1983/10/17 Improved Lower Shaft Bearing Now Used{3307}
1983/10/17 Maintenance Free Battery Available For Use In On-Highway Trucks And Buses{1401}
1983/10/17 Modification Of Control Panel Gives Different Power Source For Overcrank Timer To Prevent Starter Motor Failures{7450}
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