RITE-HITE RHV Series User manual

RHV
Dock Leveler
Owners Manual
This Manual Covers Dock Levelers Built After Serial Numbers:
07AD930001M and up
PRINTED IN U.S.A.
RITE-HITE PRINT SHOP
PUBLICATION NO. 1218
FEBRUARY 2008
MADE IN U.S.A.
part of the SMOOTH TRANSITION DOK SYSTEMTM

2Pub. No. 1218 - February 2008
RITE-HITE®RHV Dock Leveler Owner’s Manual
TABLE OF CONTENTS
INTRODUCTION AND NOTICE TO USER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OWNER RESPONSIBILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
MAINTENANCE AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
HYDRAULIC ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TROUBLESHOOTING CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
HYDRAULIC SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ELECTRICAL SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BACK COVER
INTRODUCTION
Read and understand this entire manual before installing the RHV Hydraulic Dock Leveler. The RHV Hydraulic Dock
Leveler by RITE-HITE®is designed to provide a safer work place for workers in the shipping and receiving dock
areas. The RHV Hydraulic Dock Leveler is an electromechanical device that when properly installed and operated
provides safe and secure access between the loading dock and truck. The RHV Hydraulic Dock Leveler is operated
at the top of the dock from an operator control station.
PRODUCT SPECIFIC WARRANTY
RITE-HITE®warrants the RHV Hydraulic Dock Leveler for five-years parts and one-year labor from date of shipment in
accordance with Rite-Hite's Standard Warranty Policy.
NOTICE TO USER
Your local RITE-HITE®representative provides a Planned Maintenance Program (P.M.P.) which can be fitted to your
specific operation. Call your local representative or the RITE-HITE®Corporation at 414-355-2600.
The RITE-HITE®products in this manual are covered by one or more of the following U.S. patents: 4,865,507;
4,920,598; 4,995,130; 5,040,258; 5,271,183; 5,323,503; 5,375,965; 5,440,772; 5,442,825; 5,531,557; 5,546,623;
5,553,987; 5,582,498; 5,664,930; 5,702,223; 5,762,459 (RE: 37,570); 5,882,167; 5,964,572; 6,010,297; 6,052,268;
6,065,172; 6,070,283; 6,074,157; 6,085,375; 6,092,970; 6,106,212; 6,116,839; 6,190,109; 6,220,809; 6,627,016;
6,238,163; 6,311,352; 6,318,947; 6,322,310; 6,360,394; 6,368,043; 6,431,819; 6,488,464; 6,497,076; 6,499,169;
6,505,713; 6,524,053; 6,634,049; 6,654,976; 6,676,360; 6,726,432; 6,773,221; 6,832,403; 6,880,301; 7,032,267;
7,062,814; 7,134,159; 7,213,285; 7,216,391 and pending U.S and foreign patent applications.
RITE-HITE®, LEVEL-RITE®, THINMANTM, SAFE-T-LIP®, HYDRACHEK®, WHEEL-LOKTM, DOK-LOK®, DUAL-DOK®,
SAFE-T-STRUTTM, DOK-COMMANDER®, JUMBOTM, HYDRA-RITETM, SAFE-T-GATE®, and SMOOTH TRANSITION
DOK SYSTEMTM, are trademarks of RITE-HITE®Corporation.

Pub. No. 1218 - February 2008 3
RITE-HITE®RHV Dock Leveler Owner’s Manual
SAFETY WARNINGS
LOCKOUT/TAGOUT PROCEDURES
The Occupational Safety and Health Administration (OSHA) requires, in addition to posting safety warnings and
barricading the work area (including, but not limited to, trucking office and loading docks), that the power supply has
been locked in the OFF position or disconnected. It is mandatory that an approved lockout device is utilized. An
example of a lockout device is illustrated. The proper lockout procedure requires that the person responsible for the
repairs is the only person who has the ability to remove the lockout device.
In addition to the lockout device, it is also a requirement to tag the power control in a manner that will clearly note that
repairs are under way and state who is responsible for the lockout condition. Tagout devices have to be constructed
and printed so that exposure to weather conditions, or wet and damp locations, will not cause the tag to deteriorate or
become unreadable.
RITE-HITE®does not recommend any particular lockout device, but recommends the utilization of an OSHA approved
device (refer to OSHA regulation 1910.147). RITE-HITE®also recommends the review and implementation of an entire
safety program for the Control of Hazardous Energy (Lockout/Tagout). These regulations are available through OSHA
publication 3120.
When working with electrical or electronic con-
trols, make sure that the power source has been
locked out and tagged out according to OSHA
regulations and approved local electrical codes.
XXXXXXXXXXXX
XXXXXXXXXXX
OPERATE
DO NOT
FIGURE 1 - LOCKOUT/TAGOUT
This is a statement of serious hazard. Failure to
follow the listed instructions could place the
individual at risk of serious injury or death.
This is the highest level statement. Failure to
follow the listed instructions will most likely
result in severe injury or death.
The statements used with this level of warning
deal with a safe operating procedure. If the
procedure is ignored the possibility of personal
injury may exist.
IMPORTANT is used to draw attention to a
procedure that needs to be followed to prevent
machine damage.

4Pub. No. 1218 - February 2008
RITE-HITE®RHV Dock Leveler Owner’s Manual
OTHER IMPORTANT OPERATIONAL SAFETY WARNINGS
• Keep away from hinge when operating leveler.
• Post safety warnings and barricade work area
at dock level and at ground level to prevent
unauthorized use of the dock leveler during
maintenance/service.
• During installation, anchors must be properly
torqued to obtain the necessary anchoring
strength. DO NOT USE IMPACT DRIVERS.
• DO NOT drive or walk onto truck/trailer until
the truck/trailer is parked against the dock
bumpers and the wheels are chocked or the
DOK-LOK®has been fully engaged and the
lights have changed to GREEN inside and
RED outside.
• NEVER attempt to lift the lip or hold the lip out
by hand. Serious personal injury could occur.
• DO NOT remove lifting equipment until:
a) the main cylinder has been filled.
b) Maintenance Pin has been installed and
engaged.
• ALWAYS check the rigging to make sure that
it is secure before proceeding with lifting the
unit. Never stand under any unit being lifted.
• NEVER remove the wheel chocks until
loading/ unloading is finished and the truck
driver has been given permission to drive
away from the dock or the DOK-LOK®has
been released and the lights have changed to
RED inside and GREEN outside.
CRUSH HAZARD.
• DO NOT operate leveler
with anyone standing in
the path of the leveler.
• DO NOT service leveler
unless Maintenance Pin
is properly engaged. See
page 6.
• Before beginning any service procedures:
– Position the RHV leveler in the vertical/
stored position.
– Disconnect the power and follow all
LOCKOUT/TAGOUT procedures as stated
on the inside front cover of this manual.
• DO NOT operate leveler without following the
procedure below if the leveler has not been in
service for an extended period of time.
• Procedure for filling cylinder:
– Press and hold the RAISE button (Run
Pump) to operate for (35) seconds

Pub. No. 1218 - February 2008 5
RITE-HITE®RHV Dock Leveler Owner’s Manual
OTHER IMPORTANT OPERATIONAL SAFETY WARNINGS
• This equipment should not be operated or
serviced except by trained personnel.
• DO NOT operate leveler until truck/trailer is
parked against the dock bumpers and the
truck/trailer has been secured.
• ALWAYS return the leveler platform to the
proper stored position.
• Failure to conduct routine inspections and
maintenance could cause personal injury or
damage to equipment.
• ALWAYS call your authorized RITE-HITE®
Service Representative or RITE-HITE®
(1-800-456-0600) immediately if a malfunction
occurs.
• DO NOT ground welding equipment to any
hydraulic cylinder or electrical components.
• DO NOT attach welder ground to leveler
platform when welding on base frame
assembly. Attach welder ground to base frame
assembly only. Damage to bearings or
hydraulic equipment will occur.
• When drilling holes in the control box, do not
allow the drill to go too deeply into the box.
Damage to the control systems may occur.
• Use a vacuum to remove debris from control
box. NEVER use air to blow debris from
control box.
• DO NOT connect green ground lead into
control box or junction box until all welding
has been completed.
• Check hydraulic fluid level. Deck mounted
power unit has been filled with fluid but
cylinders, hoses and manifold are shipped
dry.
• NOTE — check motor rotation. Jog the motor
until rotation has been determined. DO NOT
run the motor in reverse because this will
damage the motor and power unit.
• Make sure that the cylinder clevis and the rod
will not contact either the rear header or frame
clevis during operation.
• DO NOT force valve adjustment screws
against internal stops. Damage will occur to
the valve.
• If a procedure is not clearly defined in this
manual, contact your authorized RITE-HITE®
Service Representative or RITE-HITE®at
1-800-456-0600 before proceeding.

6Pub. No. 1218 - February 2008
RITE-HITE®RHV Dock Leveler Owner’s Manual
OTHER IMPORTANT OPERATIONAL SAFETY WARNINGS
Never be in the path of the dock leveler platform
without:
• Raising the platform by pressing and holding
RAISE button. Raise platform to its highest
position until the lip is fully extended. Release
RAISE button.
• Turning off, locking out and tagging out the
power to the control box.
• Barricading the dock leveler from any form of
traffic.
• Engage the Maintenance Pin. See Figure 2.
• If you are unable to engage the Maintenance
Pin, contact your authorized RITE-HITE®
Service Representative or RITE-HITE®at
1-800-456-0600.
Post safety warnings and barricade work area
at dock level and at ground level to prevent
unauthorized use of the dock leveler during
maintenance/service.
Maintenance Pin
In Stored Position
Maintenance Pin In
Engaged Position
TO DISENGAGE:
• Press RAISE Button Until Platform
Stops Moving.
• Remove Linch Pin And Maintenance Pin
From Tilt Back Rod.
• Insert Maintenance Pin Into Storage Plate
And Secure With Linch Pin. Snap Wire
Must Be Engaged On Pin.
TO ENGAGE:
• Press RAISE Button Until Platform
Stops Moving.
• Remove Linch Pin And Maintenance Pin
From Bracket On Platform.
• Insert Maintenance Pin Into Tilt Back Rod
And Secure With Linch Pin. Snap Wire
Must Be Engaged On Pin.
FIGURE 2 - MAINTENANCE PIN

Pub. No. 1218 - February 2008 7
RITE-HITE®RHV Dock Leveler Owner’s Manual
OWNER RESPONSIBILITY
1. The owner should recognize the inherent danger of
the interface between dock and transport vehicle.
The owner should, therefore, train and instruct
operators in the safe use of dock equipment in
accordance with the information provided below.
The manufacturer shall publish, provide to the initial
purchaser, and make the following information
readily available to owners:
•Installation instructions
•Recommended initial and periodic inspections
procedures
•Maintenance procedures
•Operating instructions
•Descriptions or specifications for replaceable or
repairable parts
•Tables identifying the grade (slope) for all
variations of length or configuration of the dock
equipment
•Information identifying the maximum
uncontrolled drop encountered upon sudden
removal of support while within the working
range of the equipment.
It shall be the responsibility of the owner to verify
that the material listed in this section has been
received and that it is made available for the
instruction and training of personnel entrusted with
the use or maintenance of the dock equipment.
2. When a transport vehicle is parked at a loading
dock, it is important that the vehicle is relatively
perpendicular to the dock face and in close contact
with at least one of the dock bumpers.
3. Nameplates, cautions, instructions, and posted
warnings shall not be obscured from the view of
operating or maintenance personnel for whom such
warnings are intended.
4. Manufacturer’s recommended periodic maintenance
and inspection procedures in effect at date of
shipment shall be followed, and written records of
the performance of these procedures should be kept.
5. As with any piece of machinery, dock equipment
requires routine maintenance, lubrication, and
adjustments. Your local RITE-HITE®representative
offers owners the option of a Planned Maintenance
Program (P.M.P.). As part of this service, your local
RITE-HITE®representative will do all routine
maintenance, lubrication, and adjustments.
6. Dock equipment that is structurally damaged shall
be removed from service, inspected by a
manufacturer’s authorized representative, and
repaired as needed before being placed back in
service.
7. The manufacturer shall make available
replacement nameplates, caution/instruction labels,
and operating/maintenance manuals upon request
of the owner. The owner shall see that all
nameplates, caution/instruction markings or labels
are in place and legible, and that the appropriate
operating/maintenance manuals are provided to
users.
8. Modifications or alterations of dock equipment shall
be made only with written permission of the original
manufacturer. These changes shall also satisfy all
safety recommendations of the original equipment
manufacturer for the particular application of the
dock equipment.
9. When industrial trucks are driven on and off
transport vehicles during the loading and
unloading operation, the brakes on the transport
vehicle shall be applied and wheel chocks or a
positive restraining device shall be engaged.
10. In selecting dock equipment, it is important to
consider not only present requirements but also
future plans or adverse environments.

8Pub. No. 1218 - February 2008
OPERATING INSTRUCTIONS — FROM
VERTICAL-STORED POSITION
LOWERING LEVELER
1. Press and hold the PLATFORM LOWER button until
the lip rests on the truck floor. See Figure 3.
RAISING LEVELER
1. When the truck leaves, the lip will drop to the
pendant position. Press and hold the PLATFORM
RAISE button until the dock leveler raises to the fully
upright position and the lip fully extends. See Figure
4.
RITE-HITE®RHV Dock Leveler Owner’s Manual
OPERATING INSTRUCTIONS
• DO NOT operate leveler with anyone standing
in the path of the leveler.
• NEVER attempt to lift the lip or hold the lip out
by hand. Serious personal injury could occur.
• Keep away from hinge when operating
leveler.
• This equipment should not be operated except
by trained personnel.
• DO NOT operate leveler until truck/trailer is
parked against the dock bumpers and the
truck/trailer has been secured.
• ALWAYS return the leveler platform to the
proper stored position.
• NEVER remove the wheel chocks until
loading/unloading is finished and the truck
driver has been given permission to drive
away from the dock or the DOK-LOK®has
been released and the lights have changed to
RED inside and GREEN outside.
• ALWAYS call your authorized RITE-HITE®
Service Representative or RITE-HITE®
(1-800-456-0600) immediately if a malfunction
occurs.
• The hydraulic dock leveler will not fall or
move under normal circumstances until one
of the buttons are activated.
• If the dock leveler is to be left in the
vertical/stored position for a prolonged peroid
of time, it is recommended that the
Maintenance Pin be engaged. See page 6.
• When properly adjusted, the leveler will stop
at any position when all buttons are released.
If the leveler does not stop, see “Hydraulic
Adjustments”.

Pub. No. 1218 - February 2008 9
RITE-HITE®RHV Dock Leveler Owner’s Manual
OPERATING INSTRUCTIONS CONT.
!
Press And Hold
PLATFORM LOWER
Button
MILWAUKEE,WISCONSIN 53224
[phone]
CORPORATION
1.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad
lsdijo 9iols oas asofpfpsp pas.
4.Rlkdf asdlsdf sdf sdfllku ulkk or
foio oilsafjloo oosfmosf ads asd dsf sdf odfmsd
osdf fooi as aso'f/idlodfu ofoap9e
psdoiua.Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9.
5.Rlkdf asdlsdf sdf sdfllku ulkk oriureqi oiewru sertew9tr w
• foio oilsafjloo oosfmosf ads asd dsf sdf odfmsderttrt 8tuer9 8u
osdf fooi as.
• psdoiua. Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9df
osdf asdf a indkhja.
• lsdkjur aoidfiuiaosd asfsf asf fo o ofpspofo.
• akfjjskf aidfi truwioa iaufisofoa asdsfs.
2.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad sdlkjjs
lsdijo 9iols oas asofpfpsp passuf sdo as9ret9 weru qwe9r qw qq
ewrwer 987sfhs as asffdio ads adsf w49r8 qeapsiuasd9.
3.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads assd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Asdfd
lsdij.
PLATFORM RAISE
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED.
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD TO EXTEND LIP
LIP EXTEND
LIP EXTEND
PLATFORM LOWER
1) POSITION PLATFORMAT 45 BY PRESSING
"PLATFORMLOWER" OR "PLATFORM RAISE"
PUSH BUTTON. RELEASE BUTTONAND LIP
WILL FALL.
2). END LOADINGAT DOCK HEIGHT. PRESS &
HOLD "PLATFORMLOWER" BUTTON UNTIL
PLATFORMIS LEVEL WITH THE DOCK FLOOR
ANDTHE LIP IS IN THE SUPPORTS.
3) END LOADING BELOW DOCK HEIGHT
POSITION THE PLATFORMSO THAT THE LIP
ISABOVE THE SUPPORTS BUT NOT ABOVE
THE TRUCK BED. PRESS THE "LIP EXTEND"
PUSH BUTTON MOMENTARILYUNTIL LIP
CLEARS THE SUPPORTS. IMMEDIATELY
PRESS & HOLD "PLATFORMLOWER " UNTIL
PLATFORMSTOPS LOWERING.
FIGURE 3 - LOWERING THE LEVELER TO WORKING POSITION/LIP RESTING ON TRUCK FLOOR
Press And Hold
PLATFORM RAISE
Button
!
MILWAUKEE,WISCONSIN 53224
[phone]
CORPORATION
1.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad
lsdijo 9iols oas asofpfpsp pas.
4.Rlkdf asdlsdf sdf sdfllku ulkk or
foio oilsafjloo oosfmosf ads asd dsf sdf odfmsd
osdf fooi as aso'f/idlodfu ofoap9e
psdoiua.Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9.
5.Rlkdf asdlsdf sdf sdfllku ulkk oriureqi oiewru sertew9tr w
• foio oilsafjloo oosfmosf ads asd dsf sdf odfmsderttrt 8tuer9 8u
osdf fooi as.
• psdoiua. Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9df
osdf asdf a indkhja.
• lsdkjur aoidfiuiaosd asfsf asf fo o ofpspofo.
• akfjjskf aidfi truwioa iaufisofoa asdsfs.
2.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad sdlkjjs
lsdijo 9iols oas asofpfpsp passuf sdo as9ret9 weru qwe9r qw qq
ewrwer 987sfhs as asffdio ads adsf w49r8 qeapsiuasd9.
3.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads assd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Asdfd
lsdij.
PLATFORM RAISE
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED.
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD TO EXTEND LIP
LIP EXTEND
LIP EXTENDPLATFORM LOWER
1) POSITION PLATFORMAT 45 BY PRESSING
"PLATFORMLOWER" OR "PLATFORM RAISE"
PUSH BUTTON. RELEASE BUTTONAND LIP
WILL FALL.
2). END LOADINGAT DOCK HEIGHT. PRESS &
HOLD "PLATFORMLOWER" BUTTON UNTIL
PLATFORMIS LEVEL WITH THE DOCK FLOOR
ANDTHE LIP IS IN THE SUPPORTS.
3) END LOADING BELOW DOCK HEIGHT
POSITION THE PLATFORMSO THAT THE LIP
ISABOVE THE SUPPORTS BUT NOT ABOVE
THE TRUCK BED. PRESS THE "LIP EXTEND"
PUSH BUTTON MOMENTARILYUNTIL LIP
CLEARS THE SUPPORTS. IMMEDIATELY
PRESS & HOLD "PLATFORMLOWER " UNTIL
PLATFORMSTOPS LOWERING.
FIGURE 4 - RAISING THE LEVELER TO VERTICALSTORED POSITION

10 Pub. No. 1218 - February 2008
RITE-HITE®RHV Dock Leveler Owner’s Manual
OPERATIONS INSTRUCTIONS CONT.
END LOADS
1. Press and hold the PLATFORM LOWER button until
the platform is at about 45°. Release the
PLATFORM LOWER button. See Figure 5.
2. Allow the platform to stay in this position until the lip
falls to the pendant position.
3. Press and hold the PLATFORM LOWER button until
the leveler is even with the floor and the lip is
seated in the lip supports.
4. When completed, raise the platform, extend the lip
and lower the lip onto the truck/trailer for normal
loading/unloading operations.
Press And Hold PLATFORM LOWER Button Until
Platform Is At About 45 (Halfway), Then Release.
Allow Lip To Fall To Pendant Position.
Press And Hold PLATFORM LOWER
Button Until The Lip Is Seated
In The Supports.
45
!
MILWAUKEE,WISCONSIN 53224
[phone]
CORPORATION
1.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad
lsdijo 9iols oas asofpfpsp pas.
4.Rlkdf asdlsdf sdf sdfllku ulkk or
foio oilsafjloo oosfmosf ads asd dsf sdf odfmsd
osdf fooi as aso'f/idlodfu ofoap9e
psdoiua.Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9.
5.Rlkdf asdlsdf sdf sdfllku ulkk oriureqi oiewru sertew9tr w
• foio oilsafjloo oosfmosf ads asd dsf sdf odfmsderttrt 8tuer9 8u
osdf fooi as.
• psdoiua. Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9df
osdf asdf a indkhja.
• lsdkjur aoidfiuiaosd asfsf asf fo o ofpspofo.
• akfjjskf aidfi truwioa iaufisofoa asdsfs.
2.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad sdlkjjs
lsdijo 9iols oas asofpfpsp passuf sdo as9ret9 weru qwe9r qw qq
ewrwer 987sfhs as asffdio ads adsf w49r8 qeapsiuasd9.
3.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads assd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Asdfd
lsdij.
PLATFORM RAISE
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED.
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD TO EXTEND LIP
LIP EXTEND
LIP EXTENDPLATFORM LOWER
1) POSITION PLATFORMAT 45 BY PRESSING
"PLATFORMLOWER" OR "PLATFORM RAISE"
PUSH BUTTON. RELEASE BUTTONAND LIP
WILL FALL.
2). END LOADINGAT DOCK HEIGHT. PRESS &
HOLD "PLATFORMLOWER" BUTTON UNTIL
PLATFORMIS LEVEL WITH THE DOCK FLOOR
ANDTHE LIP IS IN THE SUPPORTS.
3) END LOADING BELOW DOCK HEIGHT
POSITION THE PLATFORMSO THAT THE LIP
ISABOVE THE SUPPORTS BUT NOT ABOVE
THE TRUCK BED. PRESS THE "LIP EXTEND"
PUSH BUTTON MOMENTARILYUNTIL LIP
CLEARS THE SUPPORTS. IMMEDIATELY
PRESS & HOLD "PLATFORMLOWER " UNTIL
PLATFORMSTOPS LOWERING.
FIGURE 5 - END LOAD

Pub. No. 1218 - February 2008 11
BELOW DOCK END LOADS — FROM
HORIZONTAL POSITION
1. If the truck/trailer is lower than the level dock, press
and hold the PLATFORM RAISE button to lift the
platform and lip from the lip supports. Release the
PLATFORM RAISE button. See Figure 6.
2. Press and hold the LIP EXTEND button until the lip
extends just beyond the lip supports while still in the
pendant position and release the button.
3. Press and hold the PLATFORM LOWER button until
the platform comes to rest on the pit floor. Release
the button.
4. When completed, raise the platform, extend the lip
and lower the lip onto the truck/trailer for normal
loading/unloading operations.
RITE-HITE®RHV Dock Leveler Owner’s Manual
OPERATING INSTRUCTIONS CONT.
To Perform A Below Dock End Load
When The Truck/Trailer Is Lower
Than The Level Dock, Press
And Hold PLATFORM RAISE Button
To Lift Platform, Then Release.
Press And Hold LIP EXTEND Button
Until The Lip Extends Beyond The
Lip Supports, Then Release.
!
MILWAUKEE,WISCONSIN 53224
[phone]
CORPORATION
1.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad
lsdijo 9iols oas asofpfpsp pas.
4.Rlkdf asdlsdf sdf sdfllku ulkk or
foio oilsafjloo oosfmosf ads asd dsf sdf odfmsd
osdf fooi as aso'f/idlodfu ofoap9e
psdoiua.Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9.
5.Rlkdf asdlsdf sdf sdfllku ulkk oriureqi oiewru sertew9tr w
• foio oilsafjloo oosfmosf ads asd dsf sdf odfmsderttrt 8tuer9 8u
osdf fooi as.
• psdoiua. Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9df
osdf asdf a indkhja.
• lsdkjur aoidfiuiaosd asfsf asf fo o ofpspofo.
• akfjjskf aidfi truwioa iaufisofoa asdsfs.
2.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad sdlkjjs
lsdijo 9iols oas asofpfpsp passuf sdo as9ret9 weru qwe9r qw qq
ewrwer 987sfhs as asffdio ads adsf w49r8 qeapsiuasd9.
3.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads assd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Asdfd
lsdij.
PLATFORM RAISE
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED.
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD TO EXTEND LIP
LIP EXTEND
LIP EXTEND
PLATFORM LOWER
1) POSITION PLATFORMAT 45 BY PRESSING
"PLATFORMLOWER" OR "PLATFORM RAISE"
PUSH BUTTON. RELEASE BUTTONAND LIP
WILL FALL.
2). END LOADINGAT DOCK HEIGHT. PRESS &
HOLD "PLATFORMLOWER" BUTTON UNTIL
PLATFORMIS LEVEL WITH THE DOCK FLOOR
ANDTHE LIP IS IN THE SUPPORTS.
3) END LOADING BELOW DOCK HEIGHT
POSITION THE PLATFORMSO THAT THE LIP
ISABOVE THE SUPPORTS BUT NOT ABOVE
THE TRUCK BED. PRESS THE "LIP EXTEND"
PUSH BUTTON MOMENTARILYUNTIL LIP
CLEARS THE SUPPORTS. IMMEDIATELY
PRESS & HOLD "PLATFORMLOWER " UNTIL
PLATFORMSTOPS LOWERING.
FIGURE 6 - BELOW DOCK END LOAD
To Perform A Below Dock End Load
When The Truck/Trailer Is Lower
Than The Level Dock, Press
And Hold PLATFORM RAISE Button
To Lift Platform, Then Release.
Press And Hold LIP EXTEND Button
Until The Lip Extends Beyond The
Lip Supports, Then Release.
!
MILWAUKEE,WISCONSIN 53224
[phone]
CORPORATION
1.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad
lsdijo 9iols oas asofpfpsp pas.
4.Rlkdf asdlsdf sdf sdfllku ulkk or
foio oilsafjloo oosfmosf ads asd dsf sdf odfmsd
osdf fooi as aso'f/idlodfu ofoap9e
psdoiua.Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9.
5.Rlkdf asdlsdf sdf sdfllku ulkk oriureqi oiewru sertew9tr w
• foio oilsafjloo oosfmosf ads asd dsf sdf odfmsderttrt 8tuer9 8u
osdf fooi as.
• psdoiua. Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9df
osdf asdf a indkhja.
• lsdkjur aoidfiuiaosd asfsf asf fo o ofpspofo.
• akfjjskf aidfi truwioa iaufisofoa asdsfs.
2.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad sdlkjjs
lsdijo 9iols oas asofpfpsp passuf sdo as9ret9 weru qwe9r qw qq
ewrwer 987sfhs as asffdio ads adsf w49r8 qeapsiuasd9.
3.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads assd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Asdfd
lsdij.
PLATFORM RAISE
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED.
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD TO EXTEND LIP
LIP EXTEND
LIP EXTEND
PLATFORM LOWER
1) POSITION PLATFORMAT 45 BY PRESSING
"PLATFORMLOWER" OR "PLATFORM RAISE"
PUSH BUTTON. RELEASE BUTTONAND LIP
WILL FALL.
2). END LOADINGAT DOCK HEIGHT. PRESS &
HOLD "PLATFORMLOWER" BUTTON UNTIL
PLATFORMIS LEVEL WITH THE DOCK FLOOR
ANDTHE LIP IS IN THE SUPPORTS.
3) END LOADING BELOW DOCK HEIGHT
POSITION THE PLATFORMSO THAT THE LIP
ISABOVE THE SUPPORTS BUT NOT ABOVE
THE TRUCK BED. PRESS THE "LIP EXTEND"
PUSH BUTTON MOMENTARILYUNTIL LIP
CLEARS THE SUPPORTS. IMMEDIATELY
PRESS & HOLD "PLATFORMLOWER " UNTIL
PLATFORMSTOPS LOWERING.
FIGURE 7 - BELOW DOCK END LOAD

12 Pub. No. 1218 - February 2008
OPERATING INSTRUCTIONS — FROM
HORIZONTAL POSITION
1. Press and hold the PLATFORM RAISE button until
the platform and pendant lip have fully cleared the
truck floor. Release button. See Figure 8.
2. Press and hold the LIP EXTEND button until the lip
has fully extended. Release button.
3. Press and hold the PLATFORM LOWER button until
the lip rests on the truck floor. See Figure 9.
4. When the truck leaves, the lip will drop to the
pendant position. Press and hold the PLATFORM
RAISE button until the lip clears the lip supports, then
press and hold the PLATFORM LOWER button until
the leveler descends to the horizontal position. The
lip will come to rest in the lip supports.
RITE-HITE®RHV Dock Leveler Owner’s Manual
OPERATIONS INSTRUCTIONS CONT.
To Place Lip On Truckbed With
Lip Stored In Lip Supports, Press
And Hold PLATFORM RAISE
Button To Lift Platform, Then Release.
Press And Hold LIP EXTEND Button
Until The Lip Fully Extends, Then Release.
!
MILWAUKEE,WISCONSIN53224
[phone]
CORPORATION
PLATFORM RAISE
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED.
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD TO EXTEND LIP
LIP EXTEND
LIP EXTEND
PLATFORM LOWER
1) POSITION PLATFORMAT 45 BY PRESSING
"PLATFORMLOWER" OR "PLATFORM RAISE"
PUSH BUTTON. RELEASE BUTTONAND LIP
WILL FALL.
2). END LOADINGAT DOCK HEIGHT. PRESS &
HOLD "PLATFORMLOWER" BUTTON UNTIL
PLATFORMIS LEVEL WITH THE DOCK FLOOR
ANDTHE LIP IS IN THE SUPPORTS.
3) END LOADING BELOW DOCK HEIGHT
POSITION THE PLATFORMSO THAT THE LIP
ISABOVE THE SUPPORTS BUT NOT ABOVE
THE TRUCK BED. PRESS THE "LIP EXTEND"
PUSH BUTTON MOMENTARILYUNTIL LIP
CLEARS THE SUPPORTS. IMMEDIATELY
PRESS & HOLD "PLATFORMLOWER " UNTIL
PLATFORMSTOPS LOWERING.
1.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad
lsdijo 9iols oas asofpfpsp pas.
4.Rlkdf asdlsdf sdf sdfllku ulkk or
foio oilsafjloo oosfmosf ads asd dsf sdf odfmsd
osdf fooi as aso'f/idlodfu ofoap9e
psdoiua.Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9.
5.Rlkdf asdlsdf sdf sdfllku ulkk oriureqi oiewru sertew9tr w
• foio oilsafjloo oosfmosf ads asd dsf sdf odfmsderttrt 8tuer9 8u
osdf fooi as.
• psdoiua. Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9df
osdf asdf a indkhja.
• lsdkjur aoidfiuiaosd asfsf asf fo o ofpspofo.
• akfjjskf aidfi truwioa iaufisofoa asdsfs.
2.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad sdlkjjs
lsdijo 9iols oas asofpfpsp passuf sdo as9ret9 weru qwe9r qw qq
ewrwer 987sfhs as asffdio ads adsf w49r8 qeapsiuasd9.
3.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads assd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Asdfd
lsdij.
FIGURE 8 - RAISE LEVELER AND EXTEND LIP
Press And Hold PLATFORM LOWER
Button Until The Platform Is Even With
The Truck Floor, Then Release.
!
MILWAUKEE,WISCONSIN 53224
[phone]
CORPORATION
1.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad
lsdijo 9iols oas asofpfpsp pas.
4.Rlkdf asdlsdf sdf sdfllku ulkk or
foio oilsafjloo oosfmosf ads asd dsf sdf odfmsd
osdf fooi as aso'f/idlodfu ofoap9e
psdoiua.Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9.
5.Rlkdf asdlsdf sdf sdfllku ulkk oriureqi oiewru sertew9tr w
• foio oilsafjloo oosfmosf ads asd dsf sdf odfmsderttrt 8tuer9 8u
osdf fooi as.
• psdoiua. Adlsdijo 9iols oas asofpfpsp pasjoiuiojiioqe?werijqwo9df
osdf asdf a indkhja.
• lsdkjur aoidfiuiaosd asfsf asf fo o ofpspofo.
• akfjjskf aidfi truwioa iaufisofoa asdsfs.
2.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads asd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Ad sdlkjjs
lsdijo 9iols oas asofpfpsp passuf sdo as9ret9 weru qwe9r qw qq
ewrwer 987sfhs as asffdio ads adsf w49r8 qeapsiuasd9.
3.Rlkdf asdlsdf sdf sdfllku ulkk or foio oilsafjloo oosfmosf ads assd
dsf sdf odfmsd, osdf fooi as aso'f/idlodfu ofoap9e psdoiua.Asdfd
lsdij.
PLATFORM RAISE
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED.
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD UNTIL LIPRESTS ON TRAILER BED
TO STOPLEVELER RAMP MOVEMENT, RELEASE BUTTON
PRESS & HOLD TO EXTEND LIP
LIP EXTEND
LIP EXTENDPLATFORM LOWER
1) POSITION PLATFORMAT 45 BY PRESSING
"PLATFORMLOWER" OR "PLATFORM RAISE"
PUSH BUTTON. RELEASE BUTTONAND LIP
WILL FALL.
2). END LOADINGAT DOCK HEIGHT. PRESS &
HOLD "PLATFORMLOWER" BUTTON UNTIL
PLATFORMIS LEVEL WITH THE DOCK FLOOR
ANDTHE LIP IS IN THE SUPPORTS.
3) END LOADING BELOW DOCK HEIGHT
POSITION THE PLATFORMSO THAT THE LIP
ISABOVE THE SUPPORTS BUT NOT ABOVE
THE TRUCK BED. PRESS THE "LIP EXTEND"
PUSH BUTTON MOMENTARILYUNTIL LIP
CLEARS THE SUPPORTS. IMMEDIATELY
PRESS & HOLD "PLATFORMLOWER " UNTIL
PLATFORMSTOPS LOWERING.
FIGURE 9 - LOWERING THE LEVELER TO WORKING POSITION, LIP RESTING ON TRUCK FLOOR

Pub. No. 1218 - February 2008 13
RITE-HITE®RHV Dock Leveler Owner’s Manual
MAINTENANCE
SUGGESTED LEVELER 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 (P.M.P.)
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.
90 Days
1. Perform all Daily Maintenance.
2. Lubricate the unit with the proper lubricants. See
Figure 10.
3. Inspect structure, hinge pins, clevis pins and cotter
pins for abnormal wear.
4. With the leveler supported by the Safety Pin, check
hydraulic fluid level in tank. Add fluid if necessary.
Use only Rite-Hite approved hydraulic fluids.
NOTE: The correct fluid level is indicated by the
sight glass on the side of the tank.
5. Inspect all conduit, boxes and electrical connections
for damage.
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 non-metalic enclosures, breather vent part
number 122130 may be installed. The vent is
NEMA 4X and will not change the enviromental
rating of the control box.
6. Check condition of Tilt Back Rod.
7. Inspect all weather seals (if installed) and replace if
worn or damaged.
8. Inspect dock bumpers, Replace if torn/worn. 4” of
bumper protection is required.
9. Check conditions of concrete, angles and welds.
180 Days
1. Perform all Daily and 90 Days Maintenance.
2. Check that all concrete anchor bolts are torqued to
100 ft-lbs..
This equipment should not be operated or
serviced except by trained personnel.
CRUSH HAZARD.
• DO NOT operate leveler
with anyone standing in
the path of the leveler.
• DO NOT service leveler
unless Maintenance Pin
is properly engaged. See
page 6.
• Before beginning any service procedures:
– Position the RHV leveler in the vertical/
stored position.
– Disconnect the power and follow all
LOCKOUT/TAGOUT procedures as stated
on the inside front cover of this manual.
• DO NOT operate leveler without following the
procedures below if the leveler has not been
in service for an extended period of time.
• Procedure for filling cylinder:
– Press and hold the RAISE button (Run
Pump) to operate for (35) seconds

14 Pub. No. 1218 - February 2008
RITE-HITE®RHV Dock Leveler Owner’s Manual
MAINTENANCE CONT.
FIGURE 10 - LUBRICATION POINTS
OIL SAE 30 Weight
NOTE:
Check Hydraulic
Fluid Level.
360 Days
1. Perform Daily and 90-Days Maintenance.
2. Check and tighten control box mounting hardware.
3. Check for proper Tilt Back. See page 17.

COUNTERBALANCE VALVE ADJUSTMENT
1. Initial adjustment.
NOTE: This adjustment must be completed before
fine adjustment.
a. From the fully raised position, lower the platform to
45° above dock height. See figure 11. The platform
should completely stop moving and the lip should
retract.
b. If the platform continues to move downward, raise the
platform and engage the Maintenance Pin. See page
6. Loosen the lock nut on counterbalance valve while
holding adjusting screw with a hex key wrench. See
figure 12. Rotate the adjustment screw 1/8 of a turn
clockwise. Tighten locknut while holding adjustment
screw. Disengage Maintenance Pin and verify step
#1A performance. If ok, proceed to step 2. If not,
repeat step #1B.
2. Fine adjustment.
NOTE: This adjustment must be completed after
initial adjustment.
a. Return the platform to the fully raised position then
lower the platform to dock height. See figure 13. The
platform should hold that position until someone
stands on the platform near the lip.
b. If the empty platform does not hold at dock height
position, rotate the adjustment screw another 1/8 of a
turn clockwise as described in step #1B.
c. If the platform does not easily break and lower to
below dock level, raise platform and engage the
Maintenance Pin. See page 6. Loosen the lock nut on
the counterbalance valve while holding the adjusting
screw with a hex key wrench. See figure 12. Rotate
the adjustment screw 1/16 of a turn counterclockwise.
Tighten locknut while holding the adjusting screw.
Disengage Maintenance Pin and verify that both
steps #1 and #2 have been met. Repeat if necessary.
Pub. No. 1218 - February 2008 15
RITE-HITE®RHV Dock Leveler Owner’s Manual
HYDRAULIC ADJUSTMENTS
DO NOT force valve adjustment screws against
internal stops. Damage will occur to the valve.
This equipment should not be operated or
serviced except by trained personnel.
45°
FIGURE 11 - LEVELER AT 45 DEGREES
LIP
CB
FC
Counterbalance
Valve
FIGURE 12 - COUNTERBALANCE VALVE
FIGURE 13 - LEVELER AT DOCK HEIGHT

16 Pub. No. 1218 - February 2008
RITE-HITE®RHV Dock Leveler Owner’s Manual
TILT BACK ADJUSTMENT
LEVELER TILT BACK ADJUSTMENT
NOTE: This adjustment must be completed for all
units. However, when multiple levelers are being
installed, it is recommended that the tilt back
adjustment be the same on each unit so that the
units are uniform in function and appearance.
1. Press the RAISE button so that the leveler is in the
“full back, over center” position.
2. Check that the leveler is tilted back the proper
distance using a 4' level or plumb line held plumb.
Place the level against the platform and flush with
dock floor. See figure 14.
3. Adjust the tilt back, if necessary, by adjusting the
nut on the leveler tilt back rod. See figure 14.
4. Repeat Steps 1 through 3 until tilt back adjustment
is correct.
48.00”
3 - 3/16”
±1/4”
Turn adjustment nut to adjust
leveler tilt back
4’ Level or plumb line
Do not use a level or plumb line longer than 4'.
FIGURE 14 - TILT BACK ADJUSTMENT
CRUSH HAZARD.
• DO NOT operate leveler
with anyone standing in
the path of the leveler.
• DO NOT service leveler
unless Maintenance Pin
is properly engaged. See
page 6.
• Before beginning any service procedures:
– Position the RHV leveler in the vertical/
stored position.
– Disconnect the power and follow all
LOCKOUT/TAGOUT procedures as stated
on the inside front cover of this manual.

Pub. No. 1218 - February 2008 17
RITE-HITE®RHV Dock Leveler Owner’s Manual
TROUBLESHOOTING CHART
Problem Cause Solution
1. Unit will not operate. a. No power. a. Check the main power supply. Check fuses in the
control box and disconnect.
b. Overload relay tripped. b. Single phase unit should reset automatically. Three
phase unit should be reset manually in the control
box.
c. Loose connection. c. Verify that all connections are tight and no wires
are broken. Verify that pushbutton contacts are
functional.
d. Is the voltage/motor phase d. Check power requirements. correct?
e. Is motor wired correctly? e. Check wiring.
2. Unit functions slowly. a. Low oil. a. Check oil level and refill if necessary.
b. Improper voltage. b. Verify that the power unit is proper for the
incoming voltage.
c. Improper maintenance. c. Perform all required maintenance, see
“Maintenance Procedures”.
d. Hose leak. d. Check hoses, valves and fittings for leaks, and
replace if necessary.
e. Debris in hydraulic system. e. Verify that there is not debris stuck in the system.
f. Spool valves are not f. Verify that the spools are magnetized. If not, verify
opening fully. wiring and/or replace solenoid coil. Check power
requirements for motor.
g. Faulty pump or motor. g. Replace power unit assembly.
3. Functions stop during a. No power. a. Check main power supply. Check fuses in the
control box cycle. and disconnect.
b. Overload relay tripped. b. Single phase unit should reset automatically. Three
phase unit should be reset manually in the control
box.
c. Loose connection. c. Verify that all connections are tight and no wires
are broken. Verify that pushbutton contacts are
functional.
d. Improper maintenance. d. Perform all required maintenance, see
“Maintenance Procedures”.
e. “CB” valve is not adjusted e. Verify “CB” valve setting. See page 15.
properly (velocity fuse lockup).
f. Hydraulic system. f. Check to make sure that the hydraulic pump has
power. Check hoses, valves, and fittings for leaks.
Replace power unit assembly.
4. Lip falls too slowly or a. Improper maintenance. a. Check for debris, lubricate lip spools. not at all.
b. Lip cylinder binding. b. Check for debris, replace lip cylinder.
c. Faulty or incorrect P.O. c. Check for debris in system, replace flow control.
flow control.
d. Faulty or incorrect check d. Make sure check valve is correct for lip size,
valve. check for debris, replace.
f. Lip bent. f. Call your authorized RITE-HITE® Service
Representative or RITE-HITE®at 1-800-456-0600.
5. Lip falls too fast. a. Faulty or incorrect P.O. a. Check for debris in system, replace flow control.
flow control.
b. Three-way valve is not b. Check solenoid coil for magnetism/operation.
Check valve for debris by removing from valve
block and plunging valve. Replace valve assembly.

18 Pub. No. 1218 - February 2008
RITE-HITE®RHV Dock Leveler Owner’s Manual
TROUBLESHOOTING CHART CONT.
Problem Cause Solution
6. Platform falls too slowly. a. Improper maintenance. a. Perform all required maintenance, see
“Maintenance Procedures”. Verify that the
solenoids are properly adjusted.
b. “CB” valve not adjusted b. Verify “CB” valve setting. See page 15.
properly.
7. Platform falls too quickly a. Improper maintenance. a. Perform all required maintenance, see
Does not stop at any position “Maintenance Procedures”.
(too much float). b. “CB” valve not adjusted b. Verify “CB” valve setting. See page 15.
properly.
8. Platform drops a. Jammed velocity fuse. a. Check the velocity fuse for a jammed poppet.
suddenly and then will Contact your authorized RITE-HITE®Service
not operate. Representative or RITE-HITE®.
9. Unit raises when either a. Four-way valve is not a. Check solenoid coil for magnetism/operation.
the PLATFORM LOWER shifting. Check valve for debris by removing from valve
or PLATFORM RAISE block and plunging valve. Replace valve assembly.
button is pressed. b. Button not making contact b. Replace contact block on button. Check motor for
with contact block, is not motor operation.
energizing.
10. Unit raises when LIP a. Lip Extend 3-way valve is a. Verify wiring of solenoids.
EXTEND button is not energizing.
pressed.
b. Leakage past valves. b. Check solenoid coil. Replace assembly.
c. Button not making contact c. Replace contact block on button.
with block, motor is not Check motor for contact operation.
energizing.
11. When pressing the a. Lip Extend 3-way valve is a. Check wiring of #2 and #3 solenoid wires in
PLATFORM LOWER energizing when the control and junction boxes.
button, the lip extends LOWER button is pressed.
only, and when pressing The 4-way valve is
LIP EXTENDbutton, the unit energizing when the the
lowers. LIP EXTEND button is
pressed.
12. Solenoids have power a. Overload relay tripped. a. Single phase unit should reset automatically. Three
and operate, but motor phase unit should be reset manually in the control
doesn’t run. box.
b. Improper electrical hookup. b. Verify motor wiring.
13. Lip falls while lowering a. Faulty orifice disk. a. Verify that the orifice disk under the 3-way, 2-
the platform onto the position valve is not damaged or missing.
truckbed.

Pub. No. 1218 - February 2008 19
RITE-HITE®RHV Dock Leveler Owner’s Manual
HYDRAULIC SCHEMATIC
POWER UNIT ASSEMBLY
VALVE MANIFOLD ASSEMBLY
Velocity Fuse
7 GPM
Ramp Cylinde
r
Lip Cylinder
“T” Port
“LIP” Port
“RV”
Relief Valve
Lip Out
1000 P.S.I.
“RAM”
Port
“BASE”
Port
Ramp
“CB”
Counterbalance
Valve 1:1
“RAMP”
Solenoid Valve
4 Way 2 Pos.
“LIP”
Solenoid Valve
3 Way 2 Pos.
“P” Port
Orifice Disk
Ø.067
“C1”
Check Valve
“FC”
P.C. Flow Control
1.75 G.P.M.
MMotor 1 H.P.
3450 R.P.M.
Pump
1.45 G.P.M.
@ 1400 PSI
Shuttle Valve
30 P.S.I.
System Relief Valve
1400 P.S.I.
“TANK”
Port
“RAMP”
Port
XX
X
x
xx
X
FIGURE 15 - HYDRAULIC SCHEMATIC

20 Pub. No. 1218 - February 2008
RITE-HITE®RHV Dock Leveler Owner’s Manual
ELECTRICAL SCHEMATICS
Control Box
1X1
1
2
"PLATFORM LOWER"
3
1
1
A1
MCR
A2
95
O/L 96
Set @12.0
T3
2
3
2
3
T3
2
3
T3
4 Way Valve
Solenoid
Pit
Junction
Box
T2
T1 T1 T1
Motor
Junction
Box
M
L1
NN
1L1
Fuse, 0.5A,
250V
1X1
Optional Overhead Door ITL
Remove Jumper
If Overhead Door
ITL Is Present
2 O/L
1 O/L
3 O/L
GG
Lip Extend
Solenoid
1X1
1X1
1X1
1X1
"PLATFORM RAISE"
"LIP EXTEND"
1X1
2X1
2X1
GG
T8
T3
T5
T4
Motor Connections
P1 P2
T1
T2
T3
Motor - 1 HP
@3450 R.P.M.
120V, 1 Phase,
50/60 Hz.
(Thrm.
Protected)
Thrm.
O/L
Power Requirement: 120V, 1 Ph. 50/60 Hz.
Branch Circuit Disconnect Fusing Requirement:
30 Amp Dual Element Time Delay Or Low Peak
Fuse (Supplied By Others).
Use One Leveler Per Overload Protection Device.
[Ref. N.E.C. 1999 Para. 430-110 (C)] Consult Local Code.
A Branch Circuit Disconnect Shall Be Located Within A
50 Ft. Radius And Be Visible From The Control Box Location.
[Ref. N.E.C. 1999 Para. 430-102 (A) And Article 100].
2
3
2
3
T3 T3
T1 T1
G
Branch Circuit
Disconnect
Wire Termination,
Wire Nut Or
Equal Device
Terminal Block
Termination Points
FIGURE 16 - 120V 1 PHASE SCHEMATIC