Backhoe Loaders Fitted with 2-Way Auxiliary Hydraulic Systems May Have Handle and Gate Mounted Incorrectly{5051} Caterpillar

Backhoe Loader:

416F (S/N: KSF1-UP; LWT1-UP)

420F (S/N: LTG1-UP; LKH1-UP; JWJ1-UP; SKR1-UP)

430F (S/N: RDF1-UP; RGS1-UP; LDY1-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

Certain F-series Backhoe Loaders that are fitted with two-way auxiliary hydraulic circuits may find that the one way / two-way diverter valve handle is mounted incorrectly.

• For two-way flow machines, the handle should be pointing straight down

• For one-way flow machines, the handle should be pointing to machine left (3 O'clock position)

Machines that are at fault will find that for one-way flow, the lever can only be moved to the machine right (9 O'clock position).

Solution

Note: You will not need to remove the valve from the machine. The valve can be fixed by removing the lever and gate washer only.

1. Ensure that the machine is in a safe position and the implements are lowered to the ground. Ensure that the engine turned off before performing this work.

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Illustration 1	g03656596
Incorrect Installation The Gate Washer (A) is installed incorrectly. The Lever (C) will only point straight down, or to the nine o'clock position (A) Gate Washer (B) Bolt (C) Lever (D) Stop

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Illustration 2	g03656632
Correct Installation The Gate Washer (A) is installed correctly. The Lever (C) will only move to the 3 O'clock position (A) Gate Washer (B) Bolt (C) Lever (D) Stop

2. Remove Bolt (B). Remove Lever (C) and Gate Washer (A) from the valve. Turn the gate washer through 180 degrees and reinstall. Reinstall Lever (C) and tighten Bolt (B) .