DAEDALUS TECHNOLOGIES, INC.
MAKING TECHNOLOGY MORE ACCESSIBLE
DAESSY Mounting System
Maintenance of DAESSY Mounting Assemblies mainly involves checking the tightness of bolts particularly those securing the Cap. Under rough use and on power wheelchairs the bolts securing the Tube Mounts may become loose and need re-tightening. Also under these conditions the large dome-shaped bolt underneath the RTHTM may need re-tightening occasionally.
DAESSY Mounting Assemblies are supplied with Vaseline™ used as a lubricant inside the Folding Mechanisms, on the Locking Pins of the Quick Release Base and Locking Swing-Away Index Clamp, and on all Pinch Clamps. The Locking Pins may need occasional re-lubrication with Vaseline™ or a ‘dry’ lubricant such as is sold for door locks. Re-lubrication of a Folding Mechanisms is normally not required unless it is exposed to severe outdoor conditions. If a Folding Mechanism does require lubrication the Tube Mount should be removed to expose a dome shaped bolt retaining a large washer. Machine oil can be squirted around the edges of the large washer.
Lubrication at the hole for the stainless steel tube on the Frame Clamp Outer Piece and Locking Swing Away Outer Piece is optional. These are not lubricated when supplied but after some use the tube may slide easier if the hole is lubricated with a ‘dry’ lock lubricant.
The tension in the Folding Mechanism of the DAESSY Folding Mount (DFM2), the DAESSY Rear Folding Mount (DRFM6), and the DAESSY Lockable Rear Folding Mount (DLRFM8) is not adjustable. These parts are supplied preset to a tension that has been found a normally acceptable compromise between easy movement and resistance to a catastrophic drop if the mounted device is release part way through the folding sequence. With prolonged use the tension in the Folding Mechanism may decrease. Contact Daedalus Technologies, Inc. for more information about program for exchanging re-tensioned Folding Mechanisms at a nominal charge. DO NOT RETURN ANY PARTS WITHOUT RECEIVING AUTHORIZATION AND ADDRESSING INSTRUCTIONS, parts returned without authorization will be refused and returned at the sender’s expense.
DO NOT DISASSEMBLE THE COMPONENTS BEYOND THE STEPS DESCRIBED IN THE INSTALLATION PROCEDURES. ALL THE TOOLS NECESSARY TO INSTALL AND ADJUST DAESSY COMPONENTS ARE PROVIDED WITH THE COMPONENTS (with the exception of screwdrivers necessary to install holders and adapters). IF ADDITIONAL TOOLS BEYOND THOSE SUPPLIED BY DAESSY ARE NEEDED TO DISASSEMBLE A COMPONENT THIS IS AN INDICATION THAT FURTHER DISASSEMBLY IS UNNECESSARY.
The pinholes in the Locking Swing-Away Outer Piece are fitted with plastic sleeves to allow the Locking Pin to retract easily. With prolonged use these sleeves may become worn, allowing the excessive movement of the Horizontal Tube and mounted device. New plastic sleeves are available and can be easily installed. The part code for replacements plastic pin sleeves and the tools require for installation is KITLSAOP.
The DAESSY Mounting System is designed to allow very good positioning for a mounted device but is not intended for frequent adjustment and all the locking and clamping systems use bolts and Allen keys. Some adjustment may occasionally be required when the mount has been accidentally pushed out of position and movement has taken place at the connections between parts and the tube that are held by Pinch Clamps.
The Pinch Clamp does not normally damage the stainless steel tube unless severely over-tightened and will slip on the tube when overloaded. However, loosening the Pinch Clamp for re-adjustment is sometimes difficult as they can jam when strongly tightened.
Pinch Clamp Description
A Pinch Clamp consists of three pieces. A threaded nut and an unthreaded head connected by an Allen bolt 1/4 inch diameter and 3/4 inch long. The nut and head each have a radiused cutout so that when the Pinch Clamp is assembled it looks like a cylinder with a ‘bite’ out of the side. The cutout radius matches the 7/8 inch stainless steel tube used in mounting assemblies. In a DAESSY component the Pinch Clamp fits in a hole that intersects perpendicular to the tube hole but offset from the centre. When the Pinch Clamp is aligned properly the radiused cutouts match the curve of the inside wall of the tube hole.
Pinch Clamp and Stainless Steel Tube Installation
DAESSY components are normally supplied with the Pinch Clamp installed and a small plastic plug holding the Pinch Clamp in place during shipping. The Pinch Clamp is a close but not tight fit in its hole and Vaseline™ is used to lubricate it in the fitting. When the tube is not inserted the Pinch Clamp can easily fall out and get misplaced.
The pieces of the Pinch Clamp can turn in the hole such that the radiused cutouts are not aligned with the hole wall and the path for the tube through the fitting is obstructed. The Pinch Clamp is easily re-aligned by very carefully inserting a finger into the tube hole before the tube is installed; the edges where the holes intersect are sometimes sharp so caution is required. Alternatively the Pinch Clamp can be removed and disassembled, then reassembled around the tube in the hole. For fittings with the hole for the Pinch Clamp accessible at both ends the tube is inserted, then the Pinch Clamp head and nut fitted around it from either end of the Pinch Clamp hole; the bolt is inserted and tightened. For other fittings when the hole is only accessible at one end the threaded Pinch Clamp nut is dropped in and lined up before the tube is inserted; then the head and bolt are installed and tightened.
Tightening Pinch Clamps
Do not attempt to clamp the tube so tight that it will not move – this is simply not possible. Over-tightening the Pinch Clamps will damage and deform the tube (as shown), possibly lodging it in the tube hole. If a damaged tube is stuck in the fitting it will be necessary to dismantle the Pinch Clamp from around it and applying a lubricant such as WD40™ before trying to pull the tube out.
Removing Jammed Pinch Clamps
Pinch Clamps may jam when they have been strongly tightened. This often happens at the Index Clamp (IC1 or ICLSA) and at the Tube Mounts of the folding mechanisms on the Folding Mount (DFM2), Rear Folding Mount (DRFM6) and Lockable Rear Folding Mount (DLRFM8).
To remove a jammed Pinch Clamp from a Tube Mount, first remove the Tube Mount to make both ends of the Pinch Clamp accessible.
- Loosen the Pinch Clamp bolt about two turns.
- Tap on the bolt head until the threaded end of the Pinch Clamp is loose.
- Remove the Pinch Clamp bolt completely and take the threaded end of the Pinch Clamp out of the hole.
- Now tap the other end of the Pinch Clamp out or rotate the stainless steel tube strongly.