20RTK – 23RTK OPERATOR’S MANUAL 8/31/18 Page 13 of 20
EMERGENCY TOWING
In case of engine failure there is a provision that allows the trencher to be towed a short distance.
The trencher 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 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 trencher 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 diagram for
location of plugs.
• 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 dig chain boom without power, do the following:
1. Loosen the hose at the back port of the boom cylinder and raise the boom end with a hoist or
forklift if available.
2. If it still will not lift, then also loosen the hose at the front port of the boom cylinder.
WARNING: The boom with dig chain is heavy. Manpower alone is not recommended, but if
necessary, use a team of two strong workers to raise the boom, and a third worker to tighten
the hose(s) after the boom is up.
3. Secure the boom in the up position with a strap from the boom end to the handlebars.
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