The Hydrostatic System Performance May Be Slow on Certain Compact Wheel Loaders {0721, 4000, 4350, 7000, 7490, 7610, 7620} Caterpillar

Compact Wheel Loader

906K (S/N: L661-UP)

906M (S/N: H661-UP; Z661-UP)

907K (S/N: L771-UP)

907M (S/N: H771-UP; Z771-UP)

908K (S/N: L881-UP)

908M (S/N: H881-UP; Z881-UP)

Introduction

The problem that is identified below does have a known permanent solution. Use the solution that is identified below.

Problem

On certain Compact Wheel Loaders, operators have reported a lack of response from the throttle pedal, inching pedal, and PCOR (motor pressure control). Operators have requested a need for a faster response from the drivetrain.

Solution

New software has been developed to address this issue. Carry out Service Letter , PS45077. If the service letter has already been completed, then only the primary software file requires updating.

Install the new 539-3691 Machine Software Gp. Following installation, the hydrostatic pump and implements will require calibration.

ET2017B should be used to reflash the machine.