Quarterly Preventive Maintenance
Waltco recommends that the WDV / WDVBG liftgate be inspected at 6 month or 3000 cycle intervals to help assure
proper function and operation of the liftgate.
Note: Photocopy the following PM Checklist to help keep track of periodic maintenance on the liftgate. Keep
completed form with maintenance records.
For more detailed instructions on the following checklist items, refer to the appropriate sections in this Owner’s
Manual.
Date:
1/9/2009
Inspection/PM
performed
by:
Trailer/Truck
#:
Liftgate
Serial
#:
Liftgate
Model
#:
Check
appropriate
boxes
below
Quarterly Inspection/PM Procedure
Inspect Liftgate columns:
OK
Repair
Needed
Corrected
1
Inspect for any physical damage, twisted, bend, spreading, broken welds,
top and bottom.
OK
Repair
Needed
Corrected
2
Inspect for loose or missing bolts.
OK
Repair
Needed
Corrected
3
Inspect that travel ear properly engages autolatch cam.
Inspect Liftgate dock bumpers:
OK
Repair
Needed
Corrected
4
Check for bent or broken steel bumper plates.
OK
Repair
Needed
Corrected
5
Inspect that dock bumpers are tight against columns and break away welds
are in tact.
OK
Repair
Needed
Corrected
6
Inspect for missing or damaged slide pad.
Inspect Liftgate platform:
OK
Repair
Needed
Corrected
7
Inspect for loose nuts, bolts and roll pins (Main hinge pin bolt, folding hinge
bolt, roll stop and flip ramp bolts.)
OK
Repair
Needed
Corrected
8
ALUMINUM PLATFORM ONLY:
Inspect that aluminum platform side plate
bolts are tightened to 30 ft-lbs.
OK
Repair
Needed
Corrected
9
Inspect for any signs of overload damage, cracked or broken welds.
OK
Repair
Needed
Corrected
10
Inspect platform side chains, side chain hardware, side arm assembly, side
attachment assembly for bent or missing parts.
OK
Repair
Needed
Corrected
11
Inspect that platform is level with the vehicle floor in the fully raised
position.
OK
Repair
Needed
Corrected
12
Inspect folding hinges on platform and ramp for wearing. Platform should
open flat with no dipping at center.
OK
Repair
Needed
Corrected
13
On liftgates with roll stops, inspect that roll stop opens when retainer is
disengaged. Clean out roll stop hinge and lubricate with silicon spray.
Inspect Liftgate runner assembly
OK
Repair
Needed
Corrected
14
Inspect for cracked or broken welds on hinge tube.
OK
Repair
Needed
Corrected
15
Inspect that pins are secure by making sure the pin retainers are in place
and the retainer bolts are not loose or missing.
OK
Repair
Needed
Corrected
16
Inspect wear pads for wear and bracket for missing or broken bolts.
OK
Repair
Needed
Corrected
17
Inspect runner for physical damage.
45
Summary of Contents for WDV
Page 15: ...Electric Hydraulic Flow Schematics Power Up S4 Valve Coil activated for Up function 15...
Page 19: ...Electric Hydraulic Schematics Built from 4 09 thru 10 11 Single pump Motor Single Relay 19...
Page 21: ...Electric Hydraulic Schematics Built from 10 11 Single Pump Motor Dual Relay 21...
Page 23: ...Work Light Electrical Hydraulic Schematic 23...
Page 28: ...28...
Page 29: ...29...
Page 30: ...30...
Page 31: ...31...
Page 48: ...Notes 48...
