Braun RA300 service manual Ramp Components, Ramp Actions and Functions

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RAMP TERMINOLOGY

Ramp Components

Refer to the Terminology Illustra- tions on pages 2 and 3.

Pan Weldment (Housing): The pan is the stainless steel (casing) mounted in the vehicle ÁRRUV\VWHPZKLFKFRQWDLQVWKH hydraulic pump and electrical components that power the ramp electric/hydraulic systems. The À[HGVXEÁRRUFRYHUSURWHFWVWKH

components from above. The cover is easily removed for ac- cess to drive components. The

VXEÁRRUSURYLGHVDQDQWLVNLG surface for entry and exit when the ramp is deployed. The RA300 stows (folds) onto the sub

ÁRRUSURYLGLQJDQXQREVWUXFWHG antiskid surface for entry and exit when the ramp is not in use.

Ramp Assembly: The ramp assembly is made of an inboard ramp section (stage one) and an outboard ramp section (stage two). Each aluminum ramp sec- tion features vertical side plates and full antiskid surface.

Drive Arm Assembly:

The cylinder driven three stage drive arm assembly deploys and stows the ramp assembly.

Ramp Actions and Functions

Deploy: Deploy is the action of the ramp assembly extending and unfolding to ground level when the DEPLOY (OUT) switch* is activated (*installer supplied).

Stow: Stow is the action of the ramp assembly raising and fold- ing inward to stow position when the STOW (IN) switch* is acti- vated (*installer supplied).

Stow Position: Stow position is achieved when the two stage ramp assembly is fully retracted and folded (resting fully on the pan weldment).

Manual Override: Manual operation is achieved without the use of any mechanical release or complicated procedures. Simply use the Hand Holds provided on

the ramp assembly to manually deploy or stow the ramp. Mini- mal physical effort is required to

URXWHWKHK\GUDXOLFÁXLGWKURXJK the system. Slow steady motion results in the least resistance and easy operation. The faster you attempt to manually operate the ramp, the greater the resistance. See Ramp Manual Operation on page 11 for further details.

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Contents Braun Congratulations Contents Ramp Terminology Illustration Ramp TerminologyLeftin Outright Ramp Components Terminology IllustrationIntroduction Ramp Actions and Functions Ramp ComponentsRamp Operation Safety Precautions Safety Symbols Safety FIRST! Know ThatRamp Operation Ramp Operation Pre-Operation Notes and Details Ramp Access Doors and InterlocksPreventive Maintenance Operation Procedure ReviewKeep clear of area in which ramp operates Ramp also. Read and become familiar with All ramp safety precautionsRamp Passenger Safety Ramp Manual OperationBodily injury and/or property damage Installation / Service Safety Precautions Ramp InstallationInstallation Requirements Installation/Service Safety PrecautionsChassis Requirements Structure Minimum 1-1/2 x 2 steel tub- ing or equivalent Floor Pocket Clear Opening DimensionsOutboard Support Tube Recom ÝFigure E Clear Door Opening Width DimensionInstalled Ramp Deployed Installed Ramp StowedElectrical Connections Figure JElectrical Connections Illustration Electrical ConnectionsLG Light Grease Lubrication DiagramLO Light Oil DE Door-EaseCycles Maintenance and Lubrication IntroductionYear 1250 Cycles Ramp deployed fully. Fill to within YearElectrical Systems DescriptionsFigure L Hydraulics Relief Valve Adjustment ProcedureDeploy and Stow Pressure Relief Valves Drift in Speed Cam Drift OUT Speed CamTroubleshooting Diagnosis Chart TroubleshootingFaulty or Stow Blank for Layout Power Connections / Control Signals Provided by Installer Electrical Schematic BF3248Y & BF3748YWiring Diagram BF3248Y & BF3748Y Description Symbol Electrical Schematic BF3248YPRelay #2 Wire Code Wiring Diagram BF3248YPHydraulics Hydraulic Schematic BF3248Y & BF3748YQty Description BF3248Y BF3748Y Hydraulic Diagram and Parts List BF3248Y and BF3748YHydraulic Schematic BF3248YP Qty Description BF3248YP Hydraulic Diagram and Parts List BF3248YPItem Qty Description BF3248Y BF3748Y BF3248YP Repair PartsExploded View Specification and Dimensions Pre-Trip Inspection Daily Preventive Maintenance SchedProviding Access to the World Braun Commercial RA300 Transit Ramp