3. The 4-Post Lift
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Rev.D 2013_03_en
3. The 4-Post Lift
3.1 Overview of parts
Figure 4: Example of a 4-post lift
with rolling jack
1 Standard lift column
2 Lift column with control unit
3 Automatic ramp chock
4 Cross beams
5 Control unit
6 Compressed air unit with lubricator (Option)
7 Hydraulic unit with engine and tank (11 liters)
8 Base plate
9 Fixed runway
10 Drive-on ramp
11 Latch bar locking latch
12 Latch bar
13 Slip plate
14 Rolling jacks (SM40LT only)
15 Filler plate
16 Adjustable runway
17 Adjustable filler plate
T Nameplate
3.2 General workflow
After determining the vehicle data and aligning
the runways, the vehicle is driven onto the main
lift and secured against rolling.
The vehicle is raised to the desired height with
the main lift.
With optional rolling jack:
If a rolling jack is used, the manufacturer-
approved pick-up points on the vehicle are se-
lected and the matching supports are placed un-
derneath. After adjusting the selector on the con-
trol unit and checking that the weight distribution
is correct, the vehicle is lifted by the rolling jack,
and the locking latch then locks. Only then can
work continue in the danger zone.
Main lifts and rolling jacks are fitted with a pneu-
matic locking mechanism.
If the lift lowers even slightly, for safety reasons it
automatically moves into the latch bar (locking
latch).
After completion of the work, the vehicle is low-
ered again to the ground and driven off.
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