Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
4
The Solenoid Valve
Select a convenient location, near the Power Take-Off to allow the use of
shorter hoses, but away from moving parts and the hot exhaust pipe. Mark
the mounting hole locations, using the solenoid valve mounting bracket as a
template.
CAUTION: Do not drill into wires or a vital part on the opposite side of the
mounting surface – check before drilling.
Attach the solenoid valve to the mounting bracket using the screws provided
and mount them to the vehicle.
The Pressure Switch
Install the pressure switch, the screen adapter and the three hoses, as
shown in the SK drawing for your Power Take-Off.
The Speed Pick-up
In case the speed pick-up was not installed at the factory, remove and
discard the plug in the Power Take-Off case over the input gear. Install the
speed pick-up and tighten it with a crowsfoot adapter and a torque wrench
to approximately 24-lb. ft. torque. Proceed with the electrical hook-up of the
control system, as shown in the SK drawing for your Power Take-Off.
Routing the Cables
Tilt Cabs: To permit the cab to tilt, the cables must be routed around the
cab pivot point.
Conventional Cabs: Holes in the firewall are usually provided for the
speedometer cable or wiring harnesses and the control cables can usually
be routed through them.
A Through-Hole: If an existing through-hole cannot be used, drill a 1"
diameter hole and install the split rubber grommet provided, after all the
wires have been installed.
CAUTION: Do not drill into wires or a vital part on the opposite side – check
before drilling.
Bulletin HY25-1650-M1/US
Installation Instructions
Owner’s Manual
Electronic Overspeed Control
