MAINTENANCE
ALWAYS read and obey these instructions to prevent
personal injury.
• Post safety warnings and barricade work area,
at dock level and at ground level, to prevent
unauthorized use of the dock position before
maintenance has been completed.
• Make sure to install the maintenance support
strut before proceeding with any repair work.
Planned Maintenance
NOTE:
Follow maintenance procedures below as outlined
Include the specific steps for your leveler model.
NOTE:
Your local Rite‑Hite representative provides a
Planned Maintenance Program (PMP) which can
be fitted to your specific operation. Call your local
representative
Daily
1 Remove debris on and around leveler Be sure the
hinge section of the lip and the platform is clean
2 Check unit for proper operation
30 days
1 Perform all Daily Maintenance
2 Inspect the dock leveler monthly to ensure that there
are no broken or worn parts which could cause injury to
personnel or damage to the equipment
90 Days
1 Perform all Daily Maintenance
2 Clean pit
3 Inspect lip out mechanism (pins, lip crank, links, chains
and shackles) Replace if worn
4 Lubricate the leveler with the proper lubricants See
figure 11.
NOTE:
Items that use Anti‑Seize lubricant only require
lubrication every 360 Days
5 Inspect all weather seals (if installed) and replace if
worn or damaged
6 Inspect dock bumpers Four inches (4”) of bumper
protection is required Worn, torn, loose or missing
bumpers must be replaced
7 Check conditions of concrete, angles and welds
Repair or replace if necessary
8 Inspect structure, hinge pins, clevis pins and cotter
pins for abnormal wear
9 Inspect all conduit boxes, control boxes and electrical
connections for damage Repair or replace if worn or
damaged
NOTE:
If control box has evidence of condensation
a Inspect conduit Conduit should be routed to enter
through the bottom or side of the enclosure A drip
leg may be needed if the conduit is filling with water.
b Inspect the seal on the cover of the enclosure The
seal should be securely adhered to the cover with
no signs of peeling or bubbling Repair or replace if
worn or damaged
c For nonmetallic enclosures, breather vent part
number 122130 may be installed The vent is NEMA
4X and will not change the environmental rating of
the control box
10 With the leveler supported by the maintenance strut,
inspect the air tower for damage Replace if worn or
damaged
11 Check Air Tower Tub placement in leveler frame is
correct. Pit floor must be clear of obstructions where
plastic tub is located Make certain tub hold down
chain is snug – no slack. See figure 12.
360 Days
1 Perform Daily and 90‑Day Maintenance
2 Check and tighten control box mounting hardware
3 Re‑torque all shoulder bolts on units equipped with
Safe‑T‑Lip
®
See Figure 10
FIGURE 10 - SHOULDER BOLT TORQUE
Safe-T-Lip
®
Shoulder Bolt
Torque Specifications
• Torque Range: 290 ‑ 310 Ft‑Lbs
RHA-4000 Dock Leveler
Owner's Manual
Rite-Hite
®
10
Publication:
AMEN00045 2020-02-04
