©2009 4Front Engineered Solutions, Inc.
32 6004754F — HK and HK-S Hydraulic Dock Leveler, 3 Button — SafeTFrame
™
January 2009
MAINTENANCE AND LUBRICATION
Be certain, before climbing into the dock leveler pit or
doing any maintenance or repair under the dock leveler,
that: 1) THE MAINTENANCE STRUT AND LIP LOCK ARE
SECURELY IN PLACE [see Fig. 36 on page 33] and 2) the
power is disconnected and properly tagged or locked
off.
Before servicing the dock leveler, read and follow the
Safety Practices on page 3 and the Operation section of
this manual.
Place barricades on the dock oor around the dock
leveler pit and in the driveway in front of the pit while
installing, maintaining or repairing the dock leveler.
Use only lubricants shown. lmproper lubrication or
adjustments may cause operational problems.
Check all labels every 90 days. See page 31 for location
HYDRAULIC FLUID LEVEL
leveler is resting on the maintenance post with the lip
pendant.
to descend to the maintenance post and the lip to fall
pendant, then push the E Stop button.
MAINTENANCE AND LUBRICATION CHART
Lip hinge
assembly
Cylinder
pivot pins
Hydraulic oil
reservoir
Ramp
hinge pins
Dock level support leg
cam and hinge
Fig. 35
*Acceptable Hydraulic Oils:
Mobil Aero HFA (49011)
Exxon Univis Grade JI3
Texaco Aircraft Oil #1554
U.S. Oil Co.,Inc. #ZFI-5606 (Low Temp.)
Lubrication
Cleaning
Hydraulic
Oil
Reservoir
Lip & Ramp
Hinge Pins
Cylinder
Pivot Pins
Dock Level
Support Leg
Cam & Pivot Pins
Rear
Support
Legs
Dock Leveler
Pit
As Required To
Remove Debris
As Required To
Remove Debris
As Required To
Remove Debris
As Required To
Remove Debris
Every 90 Days
or As Required To
Remove Debris
Not Required Not Required
MAINTENANCE AND LUBRICATION CHART
Remove and clean hyd.
oil pump strainer once
per year. Perform during
hyd. oil change.
Once per year drain,
flush and change oil.
*Use only oils specified
Every 90 Days
SAE 30 On
Pivot Pins &
Grease Cam
Every 90 Days
SAE 30
Every 90 Days
SAE 30
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