1992/06/01 Caterpillar


Rolling Hose Pulley Modification Improves Hose Retention{6460}

Usage:


RT60 (5DG);
RTC60 (5PF) Telescopic Material Handlers

Description of Change: The rolling hose may come off the number two boom pulley and be damaged. A washer can be fabricated and installed on the pulley to help retain the rolling hose.

Adaptable To: The washer is adaptable to first production on the above mentioned machines equipped with 897362, 985347, 844209, 985437 and 844206 Boom Section Groups (Number Two). The washer is not available through the parts system but can be fabricated and installed using the following procedure.


Illustration 1
(A) 20 ± 1 mm (.78 ± .04 in). (B) 130 ± 3 mm (5.12 ± .12 in). (C) 4 mm (.16 in).

1. Fabricate washer using a non-metallic material such as nylon or Lexan®. See illustration 1.


Illustration 2
(1) Split pin. (2) Washer. (3) Pulley. (4) Roller pin.

2. Remove 3B4624 Split Pin (1), 8T4123 Washer (2) and 897325 Pulley (3) from 897326 Roller Pin (4). See illustration 2.


Illustration 3
(1) Split pin. (2) Washer. (3) Pulley. (4) Roller pin. (5) Washer. (6) Fabricated washer.

3. Install 8T4123 Washer (2), 897325 Pulley (3), fabricated washer (6), new 8J1899 Washer (5) and new 3B4624 Split Pin (1) onto 897326 Roller Pin (4).

Caterpillar Information System:

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1990/01/15 Information About Front Tire Wear And Drive Train Noise {4203,4231,4233,3000}
1992/06/01 Improved Joystick Available For The RT80/RT100 Telescopic Material Handler{5700}
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1994/07/08 Improved Mounting Method For Hydraulic Quick Hitch Pins{5133}
1994/07/08 Alternator Circuit Breaker May Have An Intermittent Fault{1420}
1994/07/08 Avoid Damage to Boom and Attachment Control{5700}
1994/07/08 Brake System Servicing{4005}
1994/07/08 Improved Master Cylinder Available{4258,4259,5470}
1994/07/08 New Retrofit Kit Available For Brake Pipe Arrangement{4257}
1994/07/08 Improved Transmission Oil Filler Tube Mounting{3014}
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