6
ASSEMBLY
(cont)
5. Remove the shipping plug [#19] from the pump [#12]
as shown in Figure 7.
6. Check the oil level in the pump. The oil should be 1”
to 1-1/4” from the bottom of the hole. If the oil level is
low, add hydraulic fluid equivalent to Conoco MV22
until the level is 1” to 1-1/4” from the bottom of the
hole.
7. Install the breather vent plug [#20], provided with the
crane, in the pump [#12] in the same hole the ship
-
ping plug [#19] was removed from in Step 5.
Hydraulic Cylinder Installation
Any air in the cylinder [#21] must be removed from the cylinder
for proper functioning of the crane.
1. Remove the protective cap and seal from the quick coupler
[#22] on the cylinder [#21].
2. Connect the hydraulic hose [#23] to the quick coupler [#22] on
the cylinder [#21] by inserting the male end of the hose [#23]
into the quick coupler [#22] and thread the quick coupler’s col
-
lar onto the hose.
3. Support the cylinder [#21] so the end with the quick coupler
[#22] is higher than the rod end. Route the hose [#23] from
the cylinder [#21] back to the pump so the hose [#23] is lower
at the end that connects to the cylinder [#21] than at the end
that connects to the pump.
4. SLOWLY extend the cylinder rod from the cylinder [#21] by
closing the release knob and actuating the pump until the
cylinder rod is fully extended. After the cylinder rod has been
extended, open the release knob and hold the cylinder so that
the quick coupler fitting is on the upper part of the cylinder and
the cylinder rod is pointing down. Carefully push the rod into
the cylinder until it is fully retracted. Repeat this process to
ensure there is as little air as possible left in the cylinder.
WARNING:
Any operation of the cylinder while detached
from the crane must be done carefully. If the cylinder is
extended too quickly or is pressurized to much it poses
the possibility of hitting someone, moving unexpectedly, or
breaking apart and may lead to property damage, serious
personal injury, and/or death.
5. Disconnect the hydraulic hose [#23] from the quick coupler
[#22] once all the air has been purged from the cylinder.
Figure 7
Figure 8
!
