Page 44 December 2007
SJ46AJ SJ51AJ SJ63AJ
FAMILIARIZATION
It is the responsibility of the operator to read, completely understand and follow all
instructions and warnings contained in this operating manual and on the MEWP.
2.5 Winching and Towing Procedure
This section provides the operator with procedure about
winching and towing and on how to manually release
brakes.
WARNING
Ensure boom is in stowed position before
winching or towing. Sudden motion could
cause MEWP to become unstable. Death
or serious injury could result.
WARNING
In emergency situations where MEWP
functions are not available and lowering
is impeded by an obstacle, utmost
care must be taken to move MEWP far
enough to clear obstacle. In such cases,
operation must be extremely smooth
with no sudden movements and must not
exceed a speed of 50 mm/sec (2 in./sec).
WARNING
When pushing, winching or towing, do
not exceed 3.2 km/h (2 mph).
WARNING
Do not winch or tow MEWP on grade
steeper than 45%.
WARNING
Do not winch or tow MEWP onto a slope,
or brake the towing vehicle rapidly. Do
not pull MEWP down an incline towards
a winch.
1. Before winching or towing MEWP, fully retract,
lower and position boom over rear drive wheels
in line with direction of travel.
2. Manually release brakes using the following steps:
NOTE
Brakes must be manually disengaged for
winching or towing.
WARNING
Do not manually disengage brakes if
MEWP is on a slope.
a) Ensure MEWP is on level ground. Chock or
block wheels to keep MEWP from rolling.
b) Turn main power disconnect switch to “ ” off
position.
CAUTION
Do not use hydraulic power with brake
disengaged.
c) Locate the bypass valve on the inboard
side of the drive pump. Bypass the drive
pump by loosening the valve stem (item 1
- marked with yellow paint) two revolutions
counterclockwise for SJ46AJ & SJ51AJ, or 90
degrees counterclockwise for SJ63AJ.
1
Figure 2-7a. Drive Bypass Valve
(Models SJ46AJ & SJ51AJ)
1
Figure 2-7b. Drive Bypass Valve
(Model SJ63AJ)
CAUTION
Do not release brakes before disengaging
drive motor!
Procedures Section 2 - Familiarization
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