1989/09/11 Caterpillar


New Key And Pin Assembly And Axle Shaft Used In Lower Rear Drive Assembly{3259}

Usage:


PS-110 ( 7MD ),
PS-130 ( 7ND ),
PS-180 ( 7PD ) Pneumatic Compactors

Description of Change: A new key and pin assembly and new axle shaft is used in the lower gear drive assemblies on the above pneumatic compactors. In some cases the former key could shift position in the keyway on the former axle shaft. The new key is dowel pined to the new axle shaft to prevent key movement relative to the axle shaft. Refer to the illustration for the location of the new components.


Location on new components in lower drive assembly.

Adaptable To: The new 7X9054 Axle Shaft and 7X9055 Key and Pin Assembly are direct replacements for the former 773509 Axle Shaft and 773447 Key in the lower rear drive assemblies on the above compactors. Two new pin and key assemblies are used on each new axle shaft.

When assembling the lower drive unit, be sure the threads on the 7X9054 Axle Shaft and the 775110 Nuts are clean and dry. Tighten the nuts to a torque of 540 N·m (400 lb ft).

Caterpillar Information System:

1989/09/11 Repair Parts And Troubleshooting Procedures For Grade And Slope Controls{5645,7220}
1989/09/11 New Setscrew For Retainer Collar At Drive Axle Bearing Assembly{3278}
1989/09/11 New Seal Retainer In Differential And Bevel Gear Groups{3280}
1989/09/11 New Seals Available For The Input And Output Shafts On Differential And Bevel Gear Groups{3253}
1989/09/11 Intermediate Cylinders In Telescoping Hoist Cylinder Groups Changed To Cylinder Assemblies{5102}
1989/09/11 Converting A Transmission For A 785 Truck For Use In A 789 Truck{3150,3190}
1989/09/11 New Plate Used In Extension Stick Group{6502}
1989/09/11 New Flywheel Housing Uses No Gasket{1157}
1989/09/11 Rubber Belted Steps Used{7254}
1989/09/11 New Seal Kit Available For Hydraulic System Oil Cooler Gear Pumps{5073}
1989/09/11 Orifice Connector Added To Hydraulic Oil Lines Group{5057}
1989/09/11 Differential Steering Carrier Requires Additional Cover{4130,3284}
1989/09/11 Be Sure To Tighten Fuel Injection Line Clamps To The Correct Torque{1252}
1989/09/11 Plasma Top Piston Rings Replace Chrome Rings{1215,1214}
1989/09/18 Improved Undercarriage Has Increased Wear Life{4155,4154,4175}
1989/09/18 Stronger Bracket Assembly Used In Circle Groups{6150,6154}
1989/09/18 New Retraction Plate Available As Service Replacement On Variable Displacement Piston Pumps{3203,5070}
1989/09/18 Radio Interference With Electronic Control Systems{7338}
1989/09/18 Tightening Procedure For Turbocharger Compressor Nut{1052,1060}
1989/09/18 New Design Alternator Belt Used{1405,1406}
1989/09/25 New Oil Level Sight Gauge Plates Used In Hydraulic And Transmission Oil Tanks{3014,5056}
1989/09/25 New Engine Magnetic Pickup Assembly (Speed Sensor){3175,7450}
1989/09/25 New Cover And Tandem Groups Used{4062,4064,4071}
1989/09/25 Be Sure To Use Correct Seal In Hydraulic System Piston Pump: Correction To Parts Books{0374,5070}
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