1994/07/08 Caterpillar

New Retrofit Kit Available For Brake Pipe Arrangement{4257}


RT50 SA (8DJ),
RT50, RTC60 (5PF, 4XG),
RT60 (5DG) Telescopic Material Handlers

Effective with the machines listed in Chart 1, current production machines have a revised brake pipe arrangement on the front and rear axles. The revised arrangement has fewer fittings and is less prone to leakage.

A new 8Q-6833 Retrofit Kit is available to install the new pipe arrangement on earlier machines currently in service, if desired. Chart 2 lists the parts included in the 8Q-6833 Retrofit Kit. Use the following installation procedure and Illustration 1 for locating and installing the retrofit kit.

Installation Procedure

1. Remove and discard the steel pipes and tee fitting from both axles, and the hose from the front axle. Retain the hose from the rear axle.

2. Install the new pipes, tee fittings and rear axle hose as shown in the illustration.

3. Bleed the brake system as detailed in the service manual.

Illustration 1. Front View and Rear View Of Axles.

Caterpillar Information System:

1994/07/08 Improved Master Cylinder Available{4258,4259,5470}
1994/07/08 Brake System Servicing{4005}
1994/07/08 Avoid Damage to Boom and Attachment Control{5700}
1994/07/08 Alternator Circuit Breaker May Have An Intermittent Fault{1420}
1994/07/08 Improved Mounting Method For Hydraulic Quick Hitch Pins{5133}
1994/07/08 Ensure Brake Hose Is Clear Of Engine Oil Pan{4257}
1992/06/01 Improved Joystick Available For The RT80/RT100 Telescopic Material Handler{5700}
1992/06/01 Rolling Hose Pulley Modification Improves Hose Retention{6460}
1991/12/01 Checking The 838440 Joystick Group{5485}
1991/12/01 Service Parts Available for 838440 Joystick Controller Group. Procedure to Recalibrate the Joystick{5485}
1991/12/01 RT80/RT100 Gearbox Lubrication{3000}
1991/12/01 Test Harness For Calibrating 838141 Electronic Control Box{5485}
1994/07/08 Improved Transmission Oil Filler Tube Mounting{3014}
1994/07/08 Transmission Drive Shaft Group Replacement{3253}
1994/07/08 Extended Shuttle Valve Holder{4289}
1994/07/08 Improved Lubrication Of Attachment Coupler Bushing{5133}
1979/01/10 Check The Adjustment Of The Original Tachometer Before A New Tachometer Is Installed
1979/01/10 New 6V87 Gauge Measures Valve Stem Wear
1979/01/10 Caution: Do Not Change Orifice In Water Outlet Of Auxiliary Pump Group
1979/01/24 A New 6V29 Sleeve Metering Fuel System Pump Roll Pin Tool Is Used To Adjust And Make A Replacement Of Roll Pins In The Fuel Injection Pump Housing
1979/01/24 Ether Starting Aid Groups Are Now Available
1979/01/24 Current Chart For Dynamometer Adapters
1979/01/24 5P9705 Tapered Rod Tool Group Used For Removal And Installation Of Piston Pin Bearings In Tapered Connecting Rods
1979/01/24 Longer Bolts Are Now Used To Fasten The Engine Fan Assembly To The Adapter
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