1998/04/27 Caterpillar


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

Usage:


D250E (5TN),
D300E (7FN) Articulated Trucks

Description of Change: A new piston pump is used for the brake, steering, and hoist systems. The new piston pump provides longer service life in several ways.

* Prevents wear of barrel and piston.
* Improved bolt retention in retraction swashplate.
* Retention of adjustment in compensator valve.
* Prevents scoring of port plate.

Adaptable To: The new 140-0295 Piston Pump is a direct replacement for former 123-2985 and 132-7098 Piston Pumps. The new 140-0295 Piston Pump is effective with D250E (5TN771 excluding 779, 780, and 781), and D300E (7FN423) Articulated Trucks.

The new 140-0295 Piston Pump is adaptable to the following machines using the 123-2985 Piston Pump:

D250E (5TN1-625), and D300E (7FN1-346) Articulated Trucks.

The new 140-0295 Piston Pump is adaptable to the following machines using the 132-7098 Piston Pump:

D250E (5TN626-770 Including 779, 780, and 781), and D300E (347-422) Articulated Trucks

Former 123-2985 and 132-7098 Piston Pumps can be upgraded to the new 140-0295 Piston Pump, as follows:

* For the 123-2985 Piston Pump, replace the former 131-6613 Rotating Kit with a new 139-2584 Pump Rotating Group (A), 139-2585 Swashplate Group (1), and 136-7497 Pump Shaft (2).
* For the 132-7098 Piston Pump, replace the former 136-7518 Pump Rotating Group with a new 139-2584 Pump Rotating Group (A), and the former 136-2193 Swashplate Group with a new 139-2585 Swashplate Group (1).


Typical of 123-2985 and 132-7098 Piston Pumps

(A) New 139-2584 Pump Rotating Kit.
(1) New 139-2585 Swashplate Group.
(2) New 136-7497 Pump Shaft.

Caterpillar Information System:

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 Flushing Procedure Assures Correct Operation Of Implement Control Valves {5051}
1998/04/20 Change Implemented To Reduce Rear Hopper 102-9849 Hinge Pin Failures{6639}
1998/04/20 1U-5551 Extension Valve Needed To Check Nitrogen Charge Pressure In Belt Tension Accumulators{4197,5077}
1998/04/20 New Improved Fuel Fill Cap For Asphalt Pavers{1273}
1998/04/20 Improved Rear Fender Kits Are Available{7252}
1998/04/20 Propel Motor Displacement Screw Settings{4351}
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}
1998/04/27 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}
1998/04/27 New Improved Parking Brake Switch Has Heavy Duty Switch And Contacts {7451}
1998/04/27 Grade Controls-New Setup Screens {5645,7220}
1998/04/27 Ladder Clamps Added To Secure Conveyor Pump EDC Wires {5702}
1998/05/04 New Coolant Level Sensor And Harness Assembly Improves Ground Path{1377,7470}
1998/05/04 Procedure To Retrofit 1R-0762 "Radial Seal" Filter Assembly{1260,1262}
1998/05/04 Improved Final Drive Pinion Bearing Setting Procedure Used And New Shim Pack Kit Available{4050,4091}
1998/05/04 Field Installation Of The CD Player{7338}
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