ATD4P9DXL_rev_0318
LATCH & CABLE INSPECTION / ADJUSTMENTS
WARNING!! Failure to perform routine inspections can lead to reduced service life, which could result
in property damage and/or personal injury. Check locking latches for proper operation. Inspect for
worn or missing parts. Replace worn or damaged parts and adjust as required.
Latch Mechanism Inspection
Latches and Latch Bar Alignment:
Check for proper latch operation on all four corners.
Observe locking latches during lift operation to ensure that all latches line up with slots in
latch bar located in all four columns. If not, relocate and/or re-shim columns.
Check slack cable devices for proper operation. Inspect for worn or missing parts. Replace
worn or damaged parts as required.
Observe both locking latches and slack cable devices during lift operation to ensure that all
latches line up with slots in latch bar located in all four columns.
Leveling – Cable & Lock Ladder Adjustments
A. Initial Adjustment
Adjust cable with lift fully lowered. Loosen jam nut and tighten nut on cable stud on top of
column until yoke end is raised 1/4” (6.4 mm) and back off nut one turn. Retighten jam nut.
Repeat for all four cables.
B. Final Adjustment
1. Load a typical vehicle on lift.
2. Raise lift as high as it will travel (full height). You should hear the locking latches click
through all latch slots simultaneously.
3. Lower lift onto top latch position.
4. Check clearance, starting with the right front column, use a straight edge to mark the
position of the yoke bottom on the column.
5. Raise lift to full height again. Mark second position. If gap between two marks is less than
2”, adjust locking latch bar to reach clearance of 2”. Repeat for the other three columns.
6. Adjust locking latch bar adjusting nut so that the bottom of the top most latch bar slot is at
least 2” below locking latch. After adjustment, tighten jam nut underneath column top plate,
7. If entire 2” clearance cannot be attained by adjusting the locking latch bar, adjust the cable.
Turn cable adjusting nut to raise the locking latch 2” above bottom of latch bar slot. Tighten
cable jam nut.
8. Lower lift and remove vehicle.
9. Raise the lift to full height. LISTEN and WATCH as the first locking latch clicks into place.
Synchronize the other three columns with this column by adjusting their cables so all four
latches click at same time. Tighten jam nuts.
NOTE: When making changes to adjustment nuts on cable end or latch bar stud, always leave at least
two threads showing between nut and stud end. Latches may not click in at the same time when
vehicle is being raised but should be close. Be sure all four corners have passed the locking latch bar
slot before lowering lift on locking latches.
Summary of Contents for 4P9DXL
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