2003/09/01 Caterpillar


Correction to Testing and Adjusting , "Margin Pressure Adjustment Procedure" {4306, 5070, 5086}

Usage:

844 2KZ
Wheel Loader:
990 (S/N: 7HK1-UP)
990 Series II (S/N: 4FR1-UP)
Wheel Dozer:
844 (S/N: 2KZ1-UP)
Systems Operation, Testing and Adjusting, SENR6649, "990 & 990 Series II Wheel Loader 844 Wheel Tractor Steering System", "Margin Pressure Adjustment Procedure". This module is part of Service Manual, SENR6640, SENR1365, and RENR2131.

A portion for the procedure of testing and adjusting the margin pressure is incorrect. In the table of required tools, the part number for the plug is replaced by 9S-4190 Plug. In the adjustment procedure for the margin pressure, there is a change of the part number for the plug in the following steps. The remainder of the information is correct.

  1. Remove the cylinder crossover relief valve. Install a 9S-4190 Plug and the 2M-9780 O-Ring Seal in the open port.

  1. Remove the 9S-4190 Plug and the 2M-9780 O-Ring Seal. Install the cylinder crossover relief valve.

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