1998/02/23 Caterpillar


New Cover And Insert Reduce Wear Between Leveler And Cover For Steering Pump Group{4306}

Usage:


Challenger 65C (2ZJ1789-Up),
Challenger 70C (2YL130-Up),
Challenger 75C (4KK2037-Up),
Challenger 75D (5AR1-Up),
Challenger 85C (9TK1554-Up),
Challenger 85D (4GR1-Up) Agricultural Tractors

Description of Change: A new cover, with an insert, replaces the former cover for the swashplate leveler on the pump side of the steering pump group. The new cover and insert reduces wear that occurred between the leveler and former cover.

Adaptable To: New 135-0338 Cover (6) and 134-1832 Insert (5), used together, are a direct replacement for former 134-2436 Cover on 127-4589 Piston Pump Group.


Location of new cover and insert for 127-4589 Piston Pump Group

(1) 134-6081 Housing.
(2) 134-1360 Post.
(3) 1G-9179 Leveler.
(4) 9X-7358 Seal-O-ring.
(5) 134-1832 Insert.
(6) 135-0338 Cover.
(7) 132-6697 Bolt.

Caterpillar Information System:

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}
1998/02/16 Improved Bearings Used In Transmission Planetary Groups On Certain Off-Highway Trucks {3160,3186}
1998/02/16 Procedure For Engine Pre-Lubrication System Bypass On Certain Off-Highway Trucks {1469}
1998/02/16 Special Instruction, SEHS9364-02, "Off-Highway Truck Rear Wheel Salvage", Is Now Available {0374,4208}
1998/02/16 24H Motor Grader Windshield Wiper Now Serviced {7305}
1998/02/16 Chrome Tension Cylinder Rods Are More Durable And Improve Seal Life {4197}
1998/02/09 Replacement Available For 7M-7260 Liquid Gasket {0648,0649,0651}
1998/02/09 Proper Reading Of LCD Service Meters {7450,7478,7480}
1998/02/23 New Relief Valve Pressure Settings For Main Hydraulic System{5069,5117}
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 Procedure To Control Body Down Impact Speed On Certain Off-Highway Trucks{5102,7258}
1998/02/23 Oil Savers Removed From 793C Rear Axle Housing Will Improve Life Of Differential Group{4001,3260}
1998/02/23 Improved Stop/Tail/Turn Lamps Now Available{1432}
1998/02/23 Supplement For Disassembly And Assembly Of Front, Center, And Rear Differentials{3258}
1998/02/23 Corrections To Shiftpoint Specifications{3168}
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}
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