1985/08/26 Caterpillar


Improved Front Gear Housing Assembly Used In Engine Front Housing Group{1151}

Usage:


916, 926, 943, 953 Loaders;
IT18, IT28 Toolcarriers;
215 Excavators;
3204 Industrial Engines

Description of Change: An improved front gear housing assembly is used in the engine front housing group of the above machines. The housing assembly has a hole through a large boss on the lower left side. Formerly, a cup plug was used to seal this hole and it was possible for this cup plug to leak.

The improved housing assembly has two tapped holes in the large boss and uses a gasket, cover and two bolts and washers to seal this hole. This will help eliminate leakage in the housing assembly.

Adaptable To: The improved 2W2834 Front Gear Housing Assembly is a direct replacement for the former housing assembly. The part number did not change.

Former housing assemblies (with the cup plug) can be modified if leakage does occur. Order the parts in the chart and use the following procedure to modify earlier housing assemblies.

Modification Procedure For An Earlier 2W2834 Housing Assembly

1. Use the 4N4217 Plate as a template to mark the location of the two holes that need to be drilled in the housing. See the illustration.

2. Drill two 6.8 mm (.266") diameter holes.

3. Tap the holes 15 mm (.6") deep with a 5/16"-18 tap.

4. Install the gasket and plate with the bolts and washers.


Location of new parts.

Caterpillar Information System:

1985/08/19 New Camshaft Installation Tools Available{0600}
1985/08/19 New Address And Phone Number For Ordering Fabricated Tool (FT) Drawings{0600}
1985/08/19 Improvements Made To Spark Ignited Engines{1100,1104,1105,1207}
1985/08/19 New Format For Some Special Instructions{0300}
1985/08/12 Thread Lock Now Used On Timing Advance Bolts{1272}
1985/08/12 The 8T3115 Portable Track Lubricator Can Be Used To Drain And Fill Track Link Joints{0645,4169,4170}
1985/08/12 Halogen Head And Flood Lamps Are Now Available{7309}
1985/08/12 Location Of 6V5135 Setscrews In Fuel Pump Group{1250}
1985/08/12 Eliminating Interference Between Governor Housing And Tachometer Drive{1264,7487}
1985/08/12 Tachometer Drive Is Now An Attachment{1166,1250,7450,7452,7487}
1985/08/05 Correct Operation Of Disconnect Switches{1411}
1985/08/05 Counterweight Improves Stability Of 8S9902 Jib Group (Track) Tool Cart{0632}
1985/08/26 Dual Element Air Cleaner Group Available{1054,1051}
1985/09/02 Repair Kits Available For Air Actuator Used In Governor Control Groups{1250}
1985/09/02 Adjusting Pneumatic Speed Control For Correct Operation{1264}
1985/09/02 New Engine Pressure Group Available{0600,0770,0781}
1985/09/02 New Precombustion Chamber Seal Available{1106,1100}
1985/09/02 Use Correct Valves When Rebuilding Engines{1105,1103}
1985/09/02 Check Fuel Injection Nozzles In Overheated Engines{1254}
1985/09/02 Steel Fuel Pump Lifter Used{1250,1251}
1985/09/02 Fumes Disposal Group Improved{1317}
1985/09/16 Oil Pump Groups Improved {1304}
1985/09/16 New Tools Available To Change BrakeSaver Control Valve Diaphragm {0600,1155}
1985/09/16 Changes To Fuel Systems {1250,1251,1252,1253,1254,1100}
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