Mertz Boxer 999-935, Operator'S Manual

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Pre-Start Inspection and Operation
a. Rotate the CRAWL control lever (Item 1, Figure 3–34 ) to adjust the travel speed as
needed.
Figure 3–34 Crawl Speed Adjust Control
b. Rotate the CRAWL control lever fully clockwise to the turtle, or NO TRAVEL position.
Full hydraulic power will be directed to the attachment and the machine will not move.
c. Move both travel control levers to the full reverse travel position.
d. While holding both of the control levers in the reverse position and the attachment
operating, rotate the CRAWL control lever counter-clockwise until you set the proper
travel speed for the attachment being used.
NOTE:
Rotating the crawl control lever counter-clockwise increases the travel speed from
very slow to full operating speed. The faster the machine travels, the less hydraulic power
will be directed to the attachment. The slower the machine travels, more hydraulic power
will be directed to the hydraulic attachment.
e. EXAMPLE – When using a trencher, activate the trencher and lower it to the work
position, hold the main travel control levers in the fully reverse position. Rotate the CRAWL
control lever to adjust the machines travel speed to match the working conditions.
f. When the crawl travel speed has been set properly, steering and direction control can be
adjusted by using either or both of the travel control levers.
4. To return to full operating speed, release both travel control levers and rotate the CRAWL
control lever counter-clockwise past the highest speed setting into the “detent” OFF position.
Full speed range will be returned to the main travel control levers.
5. Turn the crawl control system off by rotating the CRAWL VALVE control lever to the OFF
position.
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