Wabtec Ricon FoldOver FR2SS Series User manual

Service Manual
04/29/21 32DFR108.C ©2021 RICON CORPORATION
All Rights Reserved
U.S and Foreign Patents Pending
Printed in the United States of America
FoldOver ®
FR2SS Series
Low-Floor Vehicle Access Ramp
for
Transit Buses

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TABLE OF CONTENTS
APRIL 2021
32DFR108.C
FR2SS-SERIES SERVICE MANUAL
This Ricon service manual is for use by qualified service techni-
cians, and is not intended for use by non-professionals (do-it-
yourselfers). The manual provides essential instructions and ref-
erence information, which supports qualified technicians in the
correct installation and maintenance of Ricon products.
Qualified service technicians have the training and knowledge to
perform maintenance work properly and safely. For the location of
a Ricon authorized dealer or qualified service technician in your
area, call Ricon Product Support at 1-800-322-2884 or visit our
website at www.riconcorp.com.
Customer Name:
Installing Dealer:
Date Installed:
Serial Number:

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TABLE OF CONTENTS
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REVISION RECORD
REV
PAGES
DESCRIPTION OF CHANGE
ECO
32DFR108.
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Update to company logo.
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Update to company address.
1-3
Update to company logo.
5-10
Update to Figure 5-2.1.
32DFR108.
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Removed “FLUID LEVEL SENSOR INSTALLATION”.
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Added Point 7 “FLUID SENSOR”under “RAMP COMPONENT INFORMATION”
section.
4-5
Added “Wrong fluid sensor output”in “TROUBLESHOOTING GUIDE”table.
5-19
Updated Item 2A callout P/N from 35051 to 35051-02 in “HYDRAULIC
COMPONENTS AND FITTINGS”parts list table.
5-20
Added Item #16 view in the “ELECTRICAL HARNESSES AND COMPONENTS”
illustration.
5-22
Included Item #16 in “ELECTRICAL HARNESSES AND COMPONENTS”parts
list table.

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TABLE OF CONTENTS
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Chapter Page
I. FOLDOVER RAMP INTRODUCTION....................................................................................1-1
A. RAMP FEATURES....................................................................................................................... 1-1
1. INTERLOCK SUPPORT ............................................................................................................................1-1
2. AUDIBLE ALERT .......................................................................................................................................1-1
3. RAMP CONTROL PANEL .........................................................................................................................1-1
B. RICON PRODUCT SUPPORT...................................................................................................... 1-2
C. RICON TWO-YEAR LIMITED WARRANTY ................................................................................. 1-3
D. SHIPPING INFORMATION........................................................................................................... 1-4
E. CUSTOMER ORIENTATION........................................................................................................ 1-5
F. MAJOR RAMP COMPONENTS................................................................................................... 1-5
G. RAMP PART NUMBERS.............................................................................................................. 1-7
II. FOLDOVER RAMP INSTALLATION..................................................................................... 2-1
A. INSTALLATION GUIDELINE ....................................................................................................... 2-1
1. LOCATING MOUNTING BRACKETS ON BUS FRAME...........................................................................2-1
2. INSTALLING RAMP IN FLOOR.................................................................................................................2-1
3. INSTALLING VEHICLE WIRING HARNESS.............................................................................................2-1
B. FOLDOVER RAMP ADJUSTMENTS........................................................................................... 2-1
1. FLOW CONTROL VAVLE PRESSURE SETTING ADJUSTMENT...........................................................2-1
2. ADJUSTING SENSOR TARGET FOR POSITION AND GAP...................................................................2-2
3. FINAL INPSECTION..................................................................................................................................2-3
III. FOLDOVER RAMP MAINTENANCE.....................................................................................3-1
A. GENERAL SAFETY PRECAUTIONS........................................................................................... 3-1
B. DAILY INSPECTION .................................................................................................................... 3-2
C. MAINTENANCE SCHEDULE....................................................................................................... 3-2
D. RAMP COMPONENT INFORMATION ......................................................................................... 3-3
1. HYDRAULIC PUMP...................................................................................................................................3-3
2. FLOW CONTROL VALVES .......................................................................................................................3-3
3. ELECTRONIC CONTROLLER ..................................................................................................................3-4
4. SENSOR LIGHT ACTIVITY DURING RAMP MOVEMENT.......................................................................3-6
5. CIRCUIT BREAKERS AND FUSES ..........................................................................................................3-7
6. RAMP ARM ASSEMBLY ...........................................................................................................................3-7
7. FLUID SENSOR ........................................................................................................................................3-8
E. ELECTRICAL AND HYDRAULIC DIAGRAMS............................................................................. 3-9
IV. FOLDOVER RAMP TROUBLESHOOTING........................................................................... 4-1
A. TROUBLESHOOTING TABLE..................................................................................................... 4-1
B. TROUBLESHOOTING FLOW CHART......................................................................................... 4-6
1. NO RESPONSE FROM RAMP..................................................................................................................4-6
2. ELECTRICAL COMPONENTS GOOD; HYDRAULIC SYSTEM DOES NOT FUNCTION......................4-19
V. FOLDOVER RAMP PARTS DIAGRAMS AND LISTS........................................................... 5-1
Appendix 1:Ramp Specifications................................................................................................... 5-26

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INTRODUCTION
APRIL 2021
32DFR108.C
FR2SS-SERIES SERVICE MANUAL
I. FOLDOVER RAMP INTRODUCTION
his manual applies to the Ricon FoldOver®Stainless Steel Low-Floor Vehicle Access Ramp when installed in
transit vehicles. The chapters in this service manual contain a product description, maintenance instructions, and
a spare parts list. The descriptions in this chapter apply to the Ricon FoldOver Stainless Steel Low-Floor Vehicle
Access Ramp when installed in transit vehicles. The FoldOver ramp is installed in transit vehicles to accommo-
date handicapped passengers who cannot easily climb steps or are using mobility-aid equipment. The hydraulically
powered ramp folds into the vehicle vestibule flooring when not in use.
All FR2SS-series ramps have a 660-lb (300kg) load limit. Passengers must use the ramp one at a time; do not over-
load ramp. Be certain that passenger mobility-aid equipment fits between the left- and right-side ramp barriers without
any interference before allowing use of ramp.
FIGURE 1-1: RICON FOLDOVER RAMP
A. RAMP FEATURES
1. INTERLOCK SUPPORT
The ramp electronics can interface with the vehicle interlock circuitry to prevent vehicle departure when ramp
is deployed. The ramp interlock circuitry senses the position of the ramp (stowed or deployed) and makes
this information available at the J1 bus harness connector. A vehicle interlock circuit typically requires that
the following conditions be met before operating power is supplied to ramp:
•Park vehicle and set parking brake.
•Place transmission in neutral.
•Open vehicle door adjacent to ramp.
2. AUDIBLE ALERT
NOTE: This feature is optional and may not have been connected
during ramp installation.
The ramp supports an audible alert device that sounds while the ramp
is in motion.
3. RAMP CONTROL PANEL
Refer to Figure 2-2. Ricon typically does not provide a control panel.
However, the ramp can be operated with one similar to that shown (the
actual panel appearance will vary between transit authorities and vehi-
cles). The control panel is normally installed in the driver area. It should
have a power ON/OFF switch, a power on indicator light, and a spring-
loaded, three-position ramp control switch (center-off). The ramp re-
ceives power from the vehicle when the interlock conditions are met and
the power on/off switch is ON. The control panel can then be used to
transmit deploy or stow signals to the ramp hydraulic system.
T
FIGURE 2-2: TYPICAL
CONTROL PANEL

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B. RICON PRODUCT SUPPORT
If you have questions about this manual, or you need additional copies, please contact Ricon Product Support at
the locations listed. Also, refer to the Ricon website at: http://ricondealer.wabtec.com
Ricon Corporation
1135 Aviation Place
San Fernando, CA 91340.......................................................................................................... [phone]
Outside (818) Area Code .......................................................................................................... [phone]
Website ............................................................................................................http://ricondealer.wabtec.com
Vapor Ricon Europe Ltd.
Meadow Lane
Loughborough, Leicestershire ....................................................................................0044 (9) 1509 635 920
LE 1HS United Kingdom
Website .................................................................................................................................www.wabtec.com
C. RICON TWO-YEAR LIMITED WARRANTY
The following warranty provides two years of limited coverage for the Ricon FoldOver Stainless Steel
Low-Floor Vehicle Access Ramp.

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INTRODUCTION
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FR2SS-SERIES SERVICE MANUAL
RICON FOLDOVER RAMP
TWO-YEAR LIMITED WARRANTY
Ricon Corporation (Ricon) warrants to the original purchaser of this product that Ricon will repair or replace,
at its option, any parts that fail because of defective material or workmanship as follows:
•Repair or replace parts for a period of two years starting from the date ramp is put into service. Obtain a
complete list of parts covered by this warranty from Ricon Product Support.
•Labor costs for specified parts replaced under this warranty for a period of two years from the date put into
service. A Ricon rate schedule determines parts covered and labor allowed.
This Warranty Does Not Cover:
•Malfunction or damage of product parts caused by accident, misuse, lack of proper maintenance, neglect,
improper adjustment, modification, alteration, mechanical condition of vehicle, road hazards, overloading,
failure to follow operating instructions, or acts of nature (i.e., weather, lightning, flood).
NOTE: Ricon recommends this product be inspected by a Ricon dealer or trained and qualified service
technician at least once every six months, or sooner if necessary. Perform required maintenance at
this time.
WARNING!
THIS PRODUCT HAS BEEN DESIGNED AND MANUFACTURED TO EXACT
SPECIFICATIONS. ANY MODIFICATION OF THIS PRODUCT CAN BE
HAZARDOUS.
This Warranty is Void If:
•The product is not installed and maintained by a Ricon dealer or trained and qualified service technician.
•The product is modified, in any respect from its original design, without written authorization from Ricon.
Ricon disclaims liability for any personal injury or property damage that results from opera-
tion or use of a Ricon product that is modified from the original Ricon design. No person or
company is authorized to change the design of this Ricon product without written authori-
zation from Ricon.
Ricon obligation under this warranty is exclusively limited to the repair or exchange of parts
that fail within the applicable warranty period.
Ricon assumes no responsibility for expenses or damages, including incidental or conse-
quential damages. Some states do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation or exclusion may not apply.
Important: The warranty registration card must be completed and returned to Ricon within
20 days after product installation to validate this warranty. The warranty is not transfera-
ble.
The warranty gives specific legal rights. There may be other rights that vary in each state.

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D. SHIPPING INFORMATION
•When the product is received, unpack the product and check for freight damage. Claims for any damage should be
made to the carrier immediately.
•Be sure the ramp assembly contains all items listed on the included bill of material. Please report any missing items
immediately to Ricon Product Support. Save bill of material for later reference. Return the completed warranty and
owner registration cards to Ricon within 20 days to validate warranty.
NOTE: The Sales or Service personnel must review the Warranty and this Operator Manual with the user to be certain
that they understand how to safely operate the product. Instruct the user to follow the operating instructions
without exception.

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E. CUSTOMER ORIENTATION
1. Figure 2-3 shows major components of the foldover ramp. A description of each component is provided in
Table 2-3.Refer to Chapter V “Parts Diagrams and Lists” for more details.
RSM0008000
REAR
FRONT
LEFT
RIGHT
HEATER PAD WIRING ACCESS
COVER (OPTIONAL)
COMPONEN T
ACCESS COVER
FLOOR PL ATE
FLOW CONTRO L VALVES
ELECTRONIC CONTROLLER
SENSOR TARGETS
(STOW & DEPLOY)
PROXIMIT Y SENSORS
(STOW & DEPLOY)
DRIVE ARM
DRIVEN ARM
ARMHARDWARE
RAMP
HEATER PAD (OPTIONAL)
(LOCATED UNDER NON-SLI P
SURFACE)
NON-SLIP SURFACE
HYDRAULIC PUM P ASSEMBLY
DRIVESHAF T
HYDRAULIC ACTUATOR
HINGE
SIDERAI L
NON-SLIP SURFACE
MANUAL DEPLO Y TOOL SLOT
MANUAL DEPLO Y TOOL
(OPTIONAL)
LIFTING
STRAP
FIGURE 2-3: FR2SS-SERIES MAJOR RAMP COMPONENTS

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TABLE 2-3: MAJOR FR2SS FOLDOVER RAMP COMPONENTS
NAME
DESCRIPTION
Component access cover
Provides access to ramp hydraulic and electrical components.
Electronic controller
Translates electrical commands from bus control panel into signals that control ramp
hydraulic components. Monitors ramp position and drives counter.
Driveshafts
(left & right)
Transmits actuator torque to drive arms.
Drive arms
(left &right)
Ramp linkage arms attach to outboard end of driveshafts.
Driven arms
(left & right)
Ramp linkage arms attach to ramp.
Flow control valves
Manually adjusted valves control rate of ramp motion.
Arm hardware
(screws, bushings, thrust
washers)
Pivoting, load-bearing parts at both ends of driven arms. Bushings and washers are
oilite material.
Heater mat (optional)
Helps keep ramp floor clear of ice and snow.
Heater mat wiring
access cover (optional)
Provides access to wiring for optional heater mat.
Hinge
Pivoting connection between ramp and ramp frame.
Hydraulic actuator
Hydraulic powered component provides torque used to deploy and stow ramp.
Hydraulic pump assembly
Provides hydraulic pressure for use by ramp hydraulic components. The hydraulic
pump contains a motor, directional valve, pump assembly, and reservoir.
Lifting strap
Use to manually deploy or stow ramp.
Non-slip surfaces
Bonded to ramp to reduce user slippage.
Pillow blocks
(left & right)
Provide support for outer ends of driveshafts.
Proximity sensors
Located near left driveshaft. Detect position of ramp, either stowed or deployed.
Ramp
Unfolds (deploys) to provide access for handicapped passenger use. Folds into ves-
tibule floor (stows) when not used.
Side rails
(left & right)
Vertical curbs help restrict passenger to ramp area.
END OF TABLE

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F. RAMP PART NUMBERS
Refer to Table 2-1 for an explanation of FR2SS series ramp part numbers.
TABLE 2-1: FR2SS-SERIES RAMP PART NUMBER EXPLANATION
FR2SS 
Location of
Electrical
Connectors
0 –Rear
1 –Left
Side Flooring Trim
0 –Welded
1 –Shipped loose
Side barrier trim color
0 –Yellow
1 –None (1 ½” flange)
2 –Black
3 –White
Heater
0 –None
1 –Heater (24VDC only)
Control Panel
0 –No control panel (internal counter)
1 –Dash panel (w/internal counter)
Floor material
0 –Supplied by others
1 –RCA TR-852
Manual Deployment Method
0 –Pull strap
1 –Hook
2 –¼-turn key
3 –Hatch handle
Operating Voltage
0 –12VDC
1 –24VDC
Ramp Size,W x L
00 –30” x 48”
01 –32” x 48”
02 –32” x 44”
03 –32” x 43”
04 –32” x 41”
05 –30” x 49” (discontinued)
06 –32” x 50”
07 –32” x 41” (w/notched rails)
08 –32” x 32”
09 –32” x 39”
11–32” x 44”
12 –30” x 44”
13 –32” x 41”
14 –32” x 50”
15 –30” x 45”
16 –32” x 52”
17 –30” x 48”
18 –32” x 48”

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Refer to Table 2-2 for an explanation of FR2G series ramp part numbers.
TABLE 2-2: FR2G -SERIES RAMP PART NUMBER EXPLANATION
FR2G 
Location of
Electrical
Connectors
0 –Rear
1 –Left
Side Flooring Trim
0 –Welded
1 –Shipped loose
Side barrier trim color
0 –Yellow
1 –None (1 ½” flange)
2 –Black
3 –White
Heater
0 –None
1 –Heater (24VDC only)
Control Panel
0 –No control panel (internal counter)
1 –Dash panel (w/internal counter)
Floor material
0 –Supplied by others
1 –RCA TR-852
Manual Deployment Method
0 –Pull strap
1 –Hook
2 –¼-turn key
3 –Hatch handle
Operating Voltage
0 –12VDC
1 –24VDC
Ramp Size,W x L
00 –30” X 48”
01 –32” x 48”
02 –32” x 44”
03 –32” x 43”
04 –32” x 41”
05 –30” x 48” (GILLIG)
06 –32” x 50”
07 –32” x 41” (w/notched rails)

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Refer to Table 2-3 for an explanation of FR2N series ramp part numbers.
TABLE 2-2: FR2N -SERIES RAMP PART NUMBER EXPLANATION
FR2N 
Location of
Electrical
Connectors
0 –Open
Fluid Levor Sensor
0 –No
1 –Yes
Side barrier trim color
0 –Black
1 –Yellow
Heater
0 –None
1 –Heater (24VDC only)
Control Panel
0 –No control panel
1 –Dash panel
Floor material
0 –Supplied by others
1 –RCA, Ribbed, TR-452
2 –Altro Chroma 2731/SCR Yel Nose
3 –Altro Chroma CE27MTS/SCR Yel Nose
4 –Tarabus, w/Welcome Logo
5 –Altro, TFCR 2761/SCR Yel Nose
6 –Altro, TFCR 2772/SCR Yel Nose
7 –Tarabus,NT Helios 8805
8 –Altro, Meta, Midnite Yel Nose
9 –Altro Chroma 2702/SCR Yel Nose
Manual Deployment Method
0 –Pull strap
1 –Hook
2 –Hatch handle
Operating Voltage
0 –12VDC
1 –24VDC
Ramp Size,W x L
01–30” X 48”

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INSTALLATION
APRIL 2021
32DFR108.C
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II. FOLDOVER RAMP INSTALLATION
A. INSTALLATION GUIDELINES
Careful installation of the Ricon FoldOver ramp contributes to proper and safe operation. Use the electrical wir-
ing diagrams in Figures 3-12, 3-13, 3-15 and the hydraulic diagrams in Figures 3-10 and 3-11 of Chapter III to
supplement this section.
1. LOCATING MOUNTING BRACKETS ON BUS FRAME
Use a rigid fixture that substitutes for the ramp assembly when positioning ramp mounting brackets on bus
frame. If the ramp assembly is used to position mounting brackets, verify that it is correctly located relative
to the vehicle floor, etc. Accurate positioning of brackets prevents twisting or warping of ramp frame when
installing and tightening mounting hardware. A warped frame may cause the ramp motion to be erratic.
Set height of ramp flooring surface flush to surrounding floor structure to prevent a tripping hazard.
2. INSTALLING RAMP IN FLOOR
Trim away floor material to allow ramp assembly to drop into floor opening. The ramp perimeter trim over-
laps the floor surface, and is sealed to it with a bead of sealer or a gasket. The typical gap between the
side mounting faces and the bus structure is 1/8 inch; use shims to fill gap. Mount ramp with six grade-5
screws (included in supplied hardware installation kit). Use flat washers and locking-type nuts.
3. INSTALLING VEHICLE WIRING HARNESS
Route wiring harness from vehicle ramp controls to rear of ramp. Use the supplied electrical installation kit
(Ricon p/n 22985) to connect vehicle control wiring to the ramp interface connector. See Table 2-1 for pin
layout and signal descriptions.
Table 2-1: J6 PIN LAYOUT AND DESCRIPTION
Pin
Wire color
Description
Volts/amps
A
White
Interlock common
Ground for interlock circuits
B
Red
STOW request from ramp
control switch
12/24 volts, 5mA max draw
C
Orange
Output signal to interlock,
ramp not stowed
12/24 volts, 5A max
D
Black
DEPLOY request from ramp
control switch
12/24 volts, 5mA max draw
E
Brown
Power for optional heater mat
24 volts, 9A max draw
B. FOLDOVER RAMP ADJUSTMENTS
1. FLOW CONTROL VALVE PRESSURE SETTING ADJUSTMENT
NOTE: It is important to adjust both flow control valves identically during this procedure.
a. Refer to Figure 2-5. Loosen lock nut screws that secure the flow control valve knobs.
FIGURE 2-5: FLOW CONTROL PRESSURE SETTING VALVES

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b. Turn both valves fully clockwise (CW). This completely closes the valves, stopping ramp operation.
c. Open both valves 1/2 turn counterclockwise (CCW) from fully closed. Verify that each valve is adjust-
ed identically. Rotating valves counterclockwise (CCW) increases flow to the ramp actuator and in-
creases speed/torque; rotating the valves clockwise (CW) decreases flow to the actuator and decreas-
es speed/torque. The flow controls can be adjusted to meet customer speed requirements.
NOTE: The flow controls should not be adjusted so that proper operation is hampered.
d. Tighten lock nut screws.
2. SENSOR TARGET ADJUSTMENT FOR POSITION AND GAP
a. Refer to Figure 2-6. Verify that the ramp is completely stowed. This establishes a reference position
for ramp during target adjustment.
FIGURE 2-6: REFERENCE POSITION FOR RAMP
b. Refer to Figure 2-7 to verify that target is correctly installed on actuator driveshaft; the small stow seg-
ment points at the actuator and the larger deploy segment is adjacent to the pillow block. The target
must be laterally positioned on driveshaft so that its STOW and DEPLOY segments are aligned with
sensors; each target segment must be directly in front of a sensor. Adjust as necessary.
RSM0008400
DEPLO Y
SEGMEN T
STOW
SEGMEN T DEPLO Y
SENSOR
SENSOR
LIGHTS
STOW
SENSOR
SENSOR
TARGET
FIGURE 2-7: ORIENTATION OF SENSOR TARGET
c. Refer to Figure 2-8. Loosen jam nuts on sensor body. Adjust position of both nuts to achieve a gap
between nose of sensor and outside diameter of target that is .060" .030" (gap can be set anywhere
on outside diameter of target). Do not allow sensor to contact target. Tighten jam nuts and recheck
gap. Repeat for other sensor.
d. When front edge of ramp is approximately 3-6 inches above vehicle floor, the STOW sensor will be
aligned with the stow segment on the target and the LED on the sensor body will illuminate. Figure 2-8
shows the position of the STOW segment when the ramp has been fully stowed.

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INSTALLATION
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RSM0008900
SENSORLED
STOW SEGMEN T
(FARSIDE)
GAP 0.060” ± 0.030”
FIGURE 2-8: SENSOR GAP ADJUSTMENT
(LEFT SIDE VIEW)
3. FINAL INSPECTION
a. Visually inspect ramp for loose or missing hardware and fittings, and confirm that pockets are free of
debris.
b. Verify that bottom cover is installed on ramp.
c. Verify that non-skid flooring is clean, functional, and securely fastened.
d. Verify that manual operation strap is undamaged.

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MAINTENANCE
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III. FOLDOVER RAMP MAINTENANCE
he maintenance information in this chapter applies to the Ricon FoldOver Stainless Steel Low-Floor Vehicle Ac-
cess ramp when installed in transit vehicles. The information consists of safety precautions, a maintenance
schedule, component information, and diagrams for the hydraulic and electrical systems. This chapter is intend-
ed to supplement related sections of the vehicle manufacturer Owner and Service Manuals.
A. GENERAL SAFETY PRECAUTIONS
WARNING!
THIS RAMP IS DRIVEN WITH HYDRAULIC PRESSURE GENERATED BY A
HYDRAULIC PUMP SYSTEM. THE FLUID IS HIGHLY PRESSURIZED AND POSSIBLY
VERY HOT. USE EXTREME CAUTION WHEN DOING MAINTENANCE AND REPAIRS.
DO NOT DISCONNECT HOSES OR FITTINGS WHEN RAMP IS IN MOTION.
Follow these safety precautions during service of the Ricon FoldOver ramp:
•Under no circumstances is maintenance, repair, or adjustment of the FoldOver ramp to be performed
without the presence of an individual capable of giving aid.
•Give immediate attention to all injuries, and administer first-aid or seek medical attention as necessary.
•Protective eye shields and clothing should be worn during maintenance, repair, and adjustment of the
FoldOver ramp.
•The user must be cautious when operating the ramp. Be certain that hands, feet, legs, and clothing are
not in the path of ramp movement.
•Batteries contain acid that can burn. Wear protective clothing and eye protection at all times. If acid
comes in contact with skin, immediately flush affected area with water and wash with soap. Do not place
anything electrically conductive on top of battery. Do not smoke or use an open flame near battery.
•Work in a properly ventilated area.
•Read and understand all instructions before attempting to operate the FoldOver ramp.
•Inspect the ramp before use for unsafe conditions, unusual noises, or erratic movements. Do not use
ramp if any of these are present, and arrange to have a Ricon dealer or trained and qualified service
technician inspect ramp.
•Keep others clear of the ramp while it is operating.
•Ricon strongly recommends that the vehicle be parked on level ground when using ramp. Using the
ramp when vehicle is sloped may result in a ramp angle that is too steep for safe use. In addition, the
sloped vehicle may not allow the ramp to make complete contact with the ground.
•The FoldOver ramp and other system components require periodic maintenance. Ricon recommends a
thorough vehicle inspection by a Ricon dealer or trained and qualified service technician at least once
every six months. To maximize safety, the ramp and related components should be maintained at their
highest level of performance.
•Read and comply with warning labels attached to ramp.
T

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MAINTENANCE
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B. DAILY INSPECTION
Check ramp daily, following the Daily Inspection outlined in Table 3-1. Meet all inspection criteria before allowing pas-
sengers on ramp.
TABLE 3-1: DAILY INSPECTION
INSPECTION POINT
CHECK
Ramp controller
•Power ON/OFF switch operates correctly.
•Power On indicator illuminates when Power ON/OFF switch is ON.
•DEPLOY and STOW switches operate correctly.
•No unusual noises or erratic movements when ramp is deploying or stowing.
Ramp and
surrounding area
Vestibule area is free of loose objects, actuator drive arms and trim pockets are
free of debris.
Ramp non-slip
surfaces
•Surface is clean and free of slippery or sticky substances that could compro-
mise user safety.
•Surface is intact and secure, and loose edges, if present, cannot create a
stumbling hazard.
END OF TABLE
C. MAINTENANCE SCHEDULE
Regular maintenance and inspection of the Ricon FoldOver ramp provides optimum performance and reduces the need
for repairs. Maintain the ramp as directed in Table 3-2. Perform ramp maintenance more frequently during heavy use
(more than 20 cycles per day).
CAUTION!
~ This Ricon Product Is Complex ~
Required warranty period maintenance and repairs must be done at a Ricon dealer or
trained and qualified service technician. Improper maintenance, use of non-Ricon
replacement parts, or product modification will void warranty and can result in unsafe
operating conditions. We recommend that a Ricon dealer or trained and qualified service
technician continue maintenance inspections when warranty ends.
TABLE 3-2: MAINTENANCE SCHEDULE
INSPECTION POINT
ACTION
–6,000 MILE INSPECTION –
Hydraulic fluid leaks
Check all hoses and fittings; check fluid level. Tighten, fill, or replace as necessary with
Texaco 01554 Aircraft Hydraulic Oil or equivalent U.S. mil spec H5606G fluid.
Setscrews
Check for loose or missing setscrews at these locations:
•Driveshaft couplers (2 x 4 ea)
•Sensor target (1 ea)
•Pillow blocks (2 x 2 ea)
Tighten, or replace, as necessary.
Drive arm
T-nuts
Check for looseness; tighten as necessary; apply thread locker (Loc-titeblue), as neces-
sary. Refer to Figure 3-4 for drive arm hardware configuration.
Ramp interior
(for debris)
Check area below floor plate, and remove any accumulated dirt or debris.