Maxon DMD-22, User Maintenance Manual

Page: 10 / 40

1
1921 Slauson
A
ve. Santa Fe Springs, CA. 90670 (800) 227-41
16 F
AX (888) 771-7713
10
TABLE 10-1
PM Interval: 3 Months Date: / /
Equipment: W/O # Location:
Mechanic: Serial # Model #
Check Appropriate Box. “ ”
MAXON 1
st
, 2
nd
and 3
rd
Quarter Liftgate Preventative Maintenance (PM) Procedures
Satisfactory Repair Required Corrected
1
Verify if the Quarterly or Annual PM is due by checking the PM sticker on
the curbside Liftgate column.
Satisfactory Repair Required Corrected 2 Check for oil leaks at: cylinders, valves, and fi ttings.
Satisfactory Repair Required Corrected
3 Check for damage: platform, column, runners and hydraulic tubes.
Satisfactory Repair Required Corrected
4 Check for loose or missing nuts, bolts, covers, roll pins, screws and pins.
Satisfactory Repair Required Corrected 5
Check for cracked welds at: columns, runners, platform, main housing
and vehicle door frame.
Satisfactory Repair Required Corrected
6
Check platform lowering speed: Range is 16 - 30 seconds. Check
cylinder lock valves for proper operation.
Satisfactory Repair Required Corrected
7 Check platform pins and couplers.
Satisfactory Repair Required Corrected
8 Check platform raising speed: Range is 12-13 seconds.
Satisfactory Repair Required Corrected
9
Check that platform unlatches, unfolds & folds smoothly & latches
securely.
Satisfactory Repair Required Corrected
10
Check switches and wiring connections on Liftgate as well as pump
inside main housing. Also check ground straps.
Satisfactory Repair Required Corrected 11
Check the gear pump for unusual noise, i.e. squealing or extreme RPM
output.
Satisfactory Repair Required Corrected
12
Checking Oil Level: gravity down with the platform unfolded and on the
ground. Oil level should be as shown in Installation Manual, “CHECKING
HYDRAULIC FLUID”. Check for contamination, change if needed.
Satisfactory Repair Required Corrected 13 Check batteries: load test, corrosion, cables, hold downs and water level.
Satisfactory Repair Required Corrected
14 Check all charging and ground cable connections.
Satisfactory Repair Required Corrected
15
Complete a new PM sticker and install it on the curbside column of the
Liftgate. The next PM date is 3 months from the completed PM date.
Indicate on the PM sticker if 1
st
, 2
nd
, 3
rd
or 4
th
PM.
Satisfactory Repair Required Corrected 16
Check that platform latch and transit hook mechanisms work correctly
and no parts are missing.
MAXON 4 th Quarter Liftgate Preventative Maintenance (PM). Note: Includes steps 1-16
Satisfactory Repair Required Corrected
17 Change hydraulic fl uid.
Satisfactory Repair Required Corrected
18 Inspect wear on slide pads.
For more detailed information, please refer to the product maintenance manuals. Use only genuine Maxon replacement
parts for all repairs.
PREVENTATIVE MAINTENANCE (PM) CHECKLIST
PERIODIC MAINTENANCE