Magnetic Switch Assembly for the Operator Arrangement May Become an Open Circuit on Certain Mini Hydraulic Excavators {1408} Caterpillar

Mini Hydraulic Excavator

301.5 (S/N: MNH1-UP)

301.6 (S/N: MY61-UP)

301.7CR (S/N: JH71-UP)

301.8 (S/N: H8X1-UP)

302CR (S/N: RHM1-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

Magnetic switch assembly for the operator arrangement may become an open circuit when the arm bar is in the upward position on the machines listed above. Due to the open circuit of the magnetic switch assembly, engine may not start.

Solution

Illustration 1	g06421021
Operator arrangement (1) 378-1007 Magnetic Switch As

In the event of an open circuit, replace the 378-1007 Magnetic Switch As with the same part number.

Note: Jump harness can be used in order to troubleshoot the magnetic switch assembly.