1979/09/10 Caterpillar

Recommendation For Use Of A FLEX-HONE On 1100, 3100 and 3200 Series Engines {1201}

Usage:

A FLEX-HONE can be used to remove the glaze and make the necessary crosshatch pattern in the cylinder bores of 1100, 3100 and 3200 Series Engines.

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NOTICE

To get the correct surface finish use 240 grit hone (engines with cylinder liners need 180 grit hone). The crosshatch pattern MUST be of the angle shown in the illustration to give the correct piston ring wear and oil consumption. Also, when you have finished the FLEX-HONE operation, you MUST use a 1P5574 Nylon Brush together with a strong solution of detergent and water to clean the grit (particles) from the cylinder bores.

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NOTICE

Solvents, diesel fuel, oil and other solutions will not remove this grit. To be sure the bores are clean, check with a white lint-free cloth. If this cloth becomes grey or dark, clean the bore again. See "Procedures and Cautions For Use Of A FLEX-HONE On 3204 And 3208 Engines" Page 8 in the June 14, 1978 issue of Engine News for more information.

Correct angle of crosshatch pattern.

Caterpillar Information System:

1979/09/10 Different Grease Fitting Now Used In Fan Drive Group {1359}

1979/09/10 New Gasket Used In Water Lines Group For Aftercooler {1380,1063}

1979/09/10 Undercarriage Disassembly And Assembly Procedures And Specification Charts Are Available {4150,4159,4154,4171,4180}

1979/09/10 6V2055 High Vacuum Grease Gives Better Oil Seal {1052,1053,1077,0682}

1979/09/10 Stronger Bolt Now Used With Exhaust Manifold {1059,1307}

1979/09/10 Insulation Sleeve For 5P7360 Tach Generator Now Available {7462}

1979/09/03 Different Mounting Hole Locations In Ring Gear Plate Assembly And Rotor Assembly For BrakeSaver{1155}

1979/09/03 Quick Disconnect Coupling On Optional Modification Of 5P4150 Nozzle Tester Permits Faster Exchange Of Adapters{0651,1254}

1979/09/03 Follow Recommendations Given In Special Instructions For Modification Of Rollover Protective Structures (ROPS) At All Times{7323,7325}

1979/09/03 Only One Dowel Pin Is Now Used To Hold The Thrust Bearing In The Correct Position{1053,1052}

1979/08/27 New Design Thrust Plate Used In Crankshaft Group{1201,1202,1203}

1979/08/27 New Rocker Arms And Rocker Arm Shaft Have Improved Lubrication{1102}

1979/09/10 Tee Handle Hexagonal Wrench In Rack Adjusting Tool Is Now Available For Parts Replacement

1979/09/10 Pin Bore Is Now Offset (Not In The Center) .059" (1.5 mm) In The Piston To Stop Vibration Of The Cylinder Liners Which Can Cause Pitting On The Coolant Side Of The Cylinder Liners {1214,1216}

1979/09/10 Engines Can Use Crankshafts With Either Six Or Eight Counterweights {1202}

1979/09/17 New Main And Connecting Rod Bearings Have A Thicker Layer Of Surface Material{1230,1203,1219}

1979/09/17 New BrakeSaver Control Valve Group Has Improved Diaphragm{1159,1155}

1979/09/17 Keystone Piston Groups Can Be Installed In Earlier Engines In Steiger Tractors{1214,1215}

1979/09/17 Raw Water Pump Improved{1371}

1979/09/17 Improved Sea Water Pump Now Used{1361,1371}

1979/09/17 New Bracket Available For Installation Of Jacket Water Heater{1383}

1979/09/17 6V2042 Alignment Yoke And 6V2043 Alignment Bar Available{0653,3305,4450}

1979/09/24 8S9901 Tool Cart Can Be Adapted To Hold Both The 5P3600 Hydraulic Flow Meter Group And The Tools Used With It{0651}

1979/09/24 Cranking Speeds Necessary To Start Diesel Engines{0374,1000,1450}