Auxiliary Neutral Switch; Purpose; Location; How It Works - Toro 22317 Service Manual

4-PAW DIESEL/ELECTRICAL

Auxiliary Neutral Switch

Purpose

The normally closed ball type switch is used on the
auxiliary hydraulic valve. This is a safety switch to make
sure the auxiliary hydraulic valve is in the neutral detent
(Fig. 2052).

Location

The neutral switch is threaded into the lower portion of
the auxiliary hydraulic valve, located on the right side of
the upper frame assembly (Fig. 2053).
6/5-6
Fig. 2052 IMG-0547a
Fig. 2053 DSC-3160

How It Works

The switch has a spring loaded ball. When the auxiliary
hydraulic valve is in the neutral position, the ball moves
into a machined notch located in the spool. The normally
closed switch then provides a ground to the start circuit.
When the auxiliary lever is moved out of neutral, the
spool pushes against the ball end of the switch and
opens the ground circuit which prevents the engine from
starting.

Testing

1. Disconnect the switch from the wire harness. The
ball end of the switch should remain installed in the
auxiliary hydraulic valve.
2. With the VOM multimeter (ohms setting) leads
connected to the two wire terminals, move the
auxiliary hydraulic valve handle to either the reverse
flow or forward flow position. There should be NO
continuity. In the neutral position, there SHOULD be
continuity.
Toro Wheeled CUL Service Manual