1998/04/20 Caterpillar

Propel Motor Displacement Screw Settings{4351}

Usage:

PS-150B (3XR),
PS-200B (5JR) Pneumatic Compactors

Description of Change: Information is now available to adjust the maximum and minimum displacement screws in the propel motors of the listed machines. Use the procedure that follows to adjust the maximum and minimum displacement of the propel motors.

Illustration 1:
Displacement screw locations.

(X) Maximum displacement adjustment screw setting.

(Y) Minimum displacement adjustment screw setting.

(1) Locknut.

1. Remove the plastic protective caps.

2. Loosen locknut (1).

3. Hold the locknut in place and turn the appropriate displacement screw in or out until the required measurement is reached. Refer to the appropriate chart for the correct measurement value.

4. Hold the adjusting screw in place and tighten the locknut.

5. Make sure the measurement did not change after tightening the locknut

6. Repeat the procedure with the opposite displacement screw.

Caterpillar Information System:

1998/04/20 New Decals Striping For Dump Bodies{7559,7581}

1998/04/20 Dash Cover Assembly Has Been Improved{7314}

1998/04/20 Additional Information For VIMS Brake Temperature Indicator{7489,7601,7450}

1998/04/20 Primary Pressure For Transmission Pressure Control Group Has Increased{3030,3074}

1998/04/20 Engine Software Updates{1902}

1998/04/20 Additional Field Assembly Information For Off-Highway Trucks{7960,7961}

1998/04/20 Fan Group Service Replacement Parts Available{1356,1359}

1998/04/20 Weld Repair Procedure For Front Strut Frame Support{7050,7201}

1998/04/20 Thicker Dump Body Pivot Pin Retention Blocks{7424,7248}

1998/04/20 New Lip Seal With Metal Case Used In Front Suspension Group Improves Retention Of Lip Seal In The Housing{7201}

1998/04/20 Truck Body Pad Installation And Maintenance Is Very Important To Chassis Life{7258,7050}

1998/04/20 Correct Length Specified For Bolts In Metering Pumps{4312}

1998/04/20 Improved Rear Fender Kits Are Available{7252}

1998/04/20 New Improved Fuel Fill Cap For Asphalt Pavers{1273}

1998/04/20 1U-5551 Extension Valve Needed To Check Nitrogen Charge Pressure In Belt Tension Accumulators{4197,5077}

1998/04/20 Change Implemented To Reduce Rear Hopper 102-9849 Hinge Pin Failures{6639}

1998/04/27 Flushing Procedure Assures Correct Operation Of Implement Control Valves {5051}

1998/04/27 Orifice In Control Valve Prevents Sudden Stop Of Truck Body When Hoist Control Is Returned From Raise To Hold {5136}

1998/04/27 New Piston Pump For Brake, Steering, And Hoist Systems Has Longer Service Life {5070,4268,4306,5083}

1998/04/27 Effectivity Date For Caterpillar Extended Life Coolant In Machines Shipped From CPPI {1350,1395}

1998/04/27 Improved Material Deflector For Primary Conveyor Is Available {6621}

1998/04/27 New Lubrication And Maintenance Interval Decal, SEEU7039, Now Available {0374,0653,7000}

1998/04/27 Revised Walk-Around Inspection Chart, SELU7039-01, Now Available {0374,7000}

1998/04/27 Gear Box Dipstick Is Now A Plug {4350}