30SG OPERATOR’S MANUAL 4/23/19 Page 20 of 23
EMERGENCY TOWING
In case of engine failure there is a provision that allows the machine to be towed a short distance.
The drive tracks are driven by a set of tandem pumps. The front pump drives right track, and the other
pump drives left track. The drive pump by-pass valves located on the side of the pump may be opened to
allow the machine to be towed.
•
Set the parking brake if on a slope to prevent rolling. It is located behind the left hand track motor.
Move the handle down to engage the brake.
WARNING
: Navigating on any slope increases the danger of the machine losing traction or rolling
over, especially if the surface is wet. Stay out of the way to avoid personal injury.
•
Loosen
(do not remove)
the by-pass plugs two complete turns counterclockwise, see bottom drawing.
•
Loosen both cartridges in the counter balance valve on each track drive motor, see below.
If loosening cartridges does not work, disconnect hydraulic hoses to motor.
•
Disengage the parking brake by moving the handle up.
•
The machine may be towed short distance (1/8 mile or 1/4km) at slow speed, 2 mph or 200 feet per
minute maximum (3kph or 60m per min).
•
After towing, close both by-pass valves by closing the plugs with 10 foot-pounds torque.
•
Use a trailer or truck for road transport.
If you need to raise the cutter head without power, do the following:
1.
Use straps or chains to support the cutter head.
2.
Loosen the hose at the back port of the lift cylinder and raise the cutter head end with a hoist or forklift
if available.
3.
If it still will not lift, then also loosen the hose at the front port of the lift cylinder.
WARNING
: The cutter head is heavy. Manpower alone is not recommended, but if necessary, use a
team of two strong workers to raise the head, and a third worker to tighten the hose(s) after the head
is up.
4.
Secure the head in the up position with a strap or chain on the cut head housing.
Counter balance valve
cartridges.
