1998/02/23 Caterpillar

Corrections To Shiftpoint Specifications{3168}

Usage:

D250E (5TN),
D300E (7FN),
D350E (9LR),
D400E (2YR) Articulated Trucks

Reference: Service Manual Module, SENR8656; Electronic Programmable Transmission Control (EPTC II) For Articulated Trucks; "Shiftpoint Specifications"; Page 72. This module is found in Service Manuals SENR8635 for D250E & D300E Articulated Trucks and SENR8675 for D350E & D400E Articulated Trucks.

Some of the rpm values in the "Downshifts:" section of the "D350E & D400E NORMAL SHIFTPOINTS" Chart on Page 72 are incorrect. The following values should be changed:

On line 4, the Transmission Shift TOS (rpm) listed as 743 (corresponding to the 3C-2L Downshift) should actually be 608. On line 4, the Calculated EOS (rpm) listed as 608 (corresponding to the 3C-2L Downshift) should actually be 1980. On line 5, the Calculated EOS (rpm) listed as 13000 (corresponding to the 2L-2C Downshift) should actually be 1300.

Caterpillar Information System:

1998/02/23 Supplement For Disassembly And Assembly Of Front, Center, And Rear Differentials{3258}

1998/02/23 Improved Stop/Tail/Turn Lamps Now Available{1432}

1998/02/23 Oil Savers Removed From 793C Rear Axle Housing Will Improve Life Of Differential Group{4001,3260}

1998/02/23 Procedure To Control Body Down Impact Speed On Certain Off-Highway Trucks{5102,7258}

1998/02/23 New Custom Product Support Literature Is Available For 771D Quarry Trucks And 769D Off-Highway Trucks Equipped With 3Z-4939 Conventional Core Radiator Group{0374,1353}

1998/02/23 New Relief Valve Pressure Settings For Main Hydraulic System{5069,5117}

1998/02/23 New Cover And Insert Reduce Wear Between Leveler And Cover For Steering Pump Group{4306}

1998/02/16 Be Sure To Use The Correct Inlet And Exhaust Valves In Engines Equipped With Valve Bridges That Do Not Ride On Dowels {1105,1121}

1998/02/16 Proper Remote Air Bleed Installation Procedure For Machines Equipped With MTS Track Systems {4197}

1998/02/16 Air Bleed Procedure For Track Tensioning Ram Equipped With The Field Update Kit {4197}

1998/02/16 Track Alignment Procedure {4198}

1998/02/16 Cold Cylinder Cutout Strategy Added To The Electronic Control Module (ECM) Software {1902}

1998/02/23 Supplement On Accumulator Precharge And Service Pressure{5081}

1998/02/23 Procedure To Disable Top Transmission Gears{3030,1400}

1998/02/23 New Spring Improves Service Life Of First Speed Clutch{3030,3155}

1998/02/23 New Vane Pump Groups Reduce Leakage Between Adapter And Fan Pump{5055}

1998/02/23 Installation Of Rod Increases Service Life Of Rolling Hoses{6460}

1998/02/23 New Hardened Washer Improves Seat Suspension Service Life{7324}

1998/03/02 Use 137-3483 PTO Shaft Seal Installer To Maintain Correct Seal Depth When Assembling Retainer {0745,1165}

1998/03/02 Supplements List For Motor Graders {0374,0350}

1998/03/02 Use 141-8790 Alignment Tool To Disassemble And Assemble Cast Rear Wheels {4201}

1998/03/02 Flat Floor Body On 793C Off-Highway Trucks May Not Raise If Improperly Loaded {7258,5102}

1998/03/02 Cable Assembly Used To Download TPMS May Cause Incomplete Information {7601,7451}

1998/03/02 Caterpillar Monitoring System Logs Faults That Cannot Be Cleared {7490}