Advance acoustic 56514925, Service Manual

Page: 21 / 260

General Information 21 Service Manual – Advance 7765 / Nilfisk CR1500
To open the hydraulic circuit to the wheel drive motor for towing, turn the Tow Valve
Extension Shaft 90° to the bypass position (flats on the Shaft parallel to the front
axle).
After towing, turn Tow Valve Extension Shaft 90° to the normal operating position
(flats on the Shaft parallel to the pump centerline).
Note that if the tow valve is left in the open (free-wheeling) position, the wheel drive
pump can’t efficiently propel the machine in forward or reverse. Attempting to
operate the machine with the tow valve in the bypass (towing) position can cause
overheating of the hydraulic system and/or reduced operating performance.
Tow or push the machine no faster than a normal walking pace (2-3 miles per hour/
3-5 kilometers per hour), and for no farther than 300 feet [100 meters]. Towing or
pushing the machine farther than 300 feet [100 meters] can cause machine damage.
If the machine is to be moved farther than 300 feet [100 meters], raise the rear drive
wheel off the floor and place on a suitable transport dolly.
Tow Valve
Extension Shaft
in normal (operating)
position
Tow Valve
Extension Shaft
in bypass (towing)
position