1993/02/01 Caterpillar

New 9U6101 Lower Pilot Reamer Group Available{0670,1125}

Usage:

Caterpillar Machines Powered By 3114 Or 3116 Engines;
1.1 Liter Family Of Engines

When reconditioning or replacing the injector sleeves in a cylinder head from the 1.1 Liter Family Of Engines, it may be necessary to enlarge the injector tip bores (lower pilots) in the cylinder head. Due to a change in the tip bore diameter tolerance, it may be necessary to ream the bore to a larger diameter to provide adequate clearance for the lower pilot of the sleeve reamer. Because lower tip bores that are too small have been discovered randomly, it is recommended to ream all lower tip bores in the cylinder head before using the injector sleeve reamer.

The 9U6101 Lower Pilot Reamer Group consists of the components identified in the chart and illustration. The 9U6105 Guide Bushing (2) is inserted into the 4C8714 or 4C8715 Guide Bushing (part of the 4C4462 Sleeve Replacement Tool Group) to provide accurate location. The 9U6103 Collar (4) is used to drive the reamer with a 3/4 inch wrench or socket. The 9U6102 Reamer (1) is made from high quality tool steel for a long service life. The reamer group comes in a protective tube. This tube can be used for storage to help prevent damage to the tool group.

Location of components of the 9U6101 Reamer Group.

Caterpillar Information System:

1993/01/25 Check Engine Water Pump Impeller Face Clearance If The Engine Experiences Symptoms Of Overheating {1361}

1993/01/25 Unit Injector Tip Seal Deterioration {1290}

1993/01/25 Drive End Bearing Service For 50/75 Amp Brushless Alternators {1405}

1993/01/25 Special Instruction For Installing VR3 Voltage Regulator On SR4 Generators Now Available {4450}

1993/01/25 New Connecting Rod Bearing Used In Piston And Rod Groups {1219}

1993/01/18 New Cylinder Head Group Used To Help Reduce The Amount Of Oil On The Valve Stems {1102,1109,1104}

1993/01/18 New Exhaust Manifold Group Will Help Reduce Vibration On Bellows {1059}

1993/01/18 New Grommets With Higher Temperature Capacity Used In Clamp Assemblies {1307,1052}

1993/01/18 New And Remanufactured Fuel Injector Reference {1290}

1993/01/18 Cylinder Pack Puller Groups Improved {0705,1239}

1993/01/18 Part Number References For 0R2818, 0R2819, And 0R3231 Remanufactured 3208 Truck Engines {0374}

1993/01/18 New Videotape "Detection of Air and Combustion Gases in the Cooling System" Available {0374,1350}

1993/02/08 Maintenance Tips For 6I0799 Exhaust Restrictor; Additional Spring Improves Performance Of 6I0799 Exhaust Restrictor{1119,1061,1088}

1993/02/15 Procedure To Determine Idler Height {4159}

1993/02/15 Aftercooler Core And Turbocharger Compressor Wheel Cleaning Interval {1317,1052,1054,1060}

1993/02/15 New Breather Group And Fumes Disposal Group Help Reduce Oil In Blow-By Fumes {1317}

1993/02/15 New Tank Assemblies Used In Expansion Tank Groups; New Pressure Cap; New Coolant Recovery System Available {1354,1392}

1993/02/15 Maximum Wiring Harness Extension Length Specification {1408,7451}

1993/02/15 New Oil Pump Groups Do Not Require Key On Drive Shaft {1304}

1993/02/15 Valve Seat Insert Removal Tools {0703,1103}

1993/02/15 New Water Seals Used In Cylinder Head Groups; New Water Seal Assemblies And O-Ring Seals Used In Insert Kit {1115}

1993/02/15 Low Idle Operating Expense

1993/02/22 New Voltage Regulators Provide Improved Reliability{1410,1405}

1993/03/01 Publications Updated For Hydraulic Pump And Motor Service {5050}