20K 2-Post Lift
Installation, Operation and Maintenance
Page 12
Rev. 11/10/2021
EAZ0080V85A
59) Lubricate the arm pin or carriage arm pin hole with
“anti-seize” and install the arms. Install the Arm
Pin Snap Ring.
60) Install the Arm Restraints with the 1/2”-13 Socket
Head Cap Screws. Ensure that the arm restraint
threads engage and disengage properly. Arm
restraints should disengage when lift is fully
lowered (
Fig 19
).
61) Extend the footpad to both extents and apply
“anti-seize” to the retaining ring.
Fig. 19 – Arm Installation
62) Make sure all the arm stop screws are tight. Slide
all the arms out so they are fully extended making
sure that the intermediate is retained in the female
and the male is retained in the intermediate arm.
63) Locate the two pre-drilled holes on the back of
each column 19” up from the top of the base plate.
Center the adapter rack and attach with 5/16”-
18NC x 1” Lg hex flange cap screw and 5/16” hex
flange nut (
Fig. 20
)
.
Fig. 20 – Adapter Rack Installation
E
LECTRICAL
See Figure 21 for the following steps.
64) Wire tie Limit Switch cord to Overhead hydraulic
Hose and Power Unit Hose.
65) Connect the Overhead Limit Switch Cord to
Power Unit
66) Connect Power Unit to suitable electrical source.
67) Energize the power unit and begin raising the
cylinder casings to reengage the carriage.
Note: The air in the cylinders and hoses must be
compressed before the cylinders will start to
move. Once the cylinders do begin to move, the
motion will be erratic.
68) Continue raising the cylinders until the top of the
Power Side cylinder contacts the top plate of the
carriage.
Do not place fingers inside the
carriage.
69) Use a socket and extension on the bleed screw at
the top of the cylinder to align the cylinder with the
hole in the top of the carriage.
70) Repeat the previous two steps for the Idler Side
cylinder.
71) Continue energizing power unit to fully reengage
the cylinders with the carriages.
72)
IMPORTANT
:
TEST OPERATION OF
O
VERHEAD
L
IMIT
SWITCH
.
W
HILE RAISING LIFT
,
OPERATE
O
VERHEAD
S
HUTOFF
B
AR
.
P
OWER
U
NIT
M
OTOR SHOULD STOP
WHEN
S
HUTOFF
B
AR IS RAISED
.
WARNING
