BendPak RJ-45 Rolling Bridge Jack

A BendPak RJ-45 Rolling Bridge jack (serial number 11126-002-002) was purchased from Autobodytoolmart in Elgin, Illinois ( http://www.autobodytoolmart.com/  ,  800-382-1200 ).  Like the 4 post lift, shipping was free and the jack was shipped direct from BendPak in Santa Paula, California.  The shipping weight was 455 pounds.

This jack will allow for the elevation of either end of the EV for brake or suspension work.

DSC05659 showing the Bridge Jack on a dolly prior to installation on the four post lift.  When the bridge lift is placed directly on the ground the rollers do not contact.  When no silver cylindrical spacers are used between the lifting arms and the rubber pads, the top of the rubber pads is about 20.5 cm above the ground.  This picture above shows the use of the pair of 2.75" spacers.

DSC05743 of the two pairs of factory provided spacers.  When stacked, the 2.75" and 5.5" spacers can provide an additional 8.25" of lift.

DSC05661 of one of the pair of utility rail channels that are located on the inner side of  both runways.

DSC05664 showing one of the rollers (located at each corner of the bridge jack) that allows for movement of the jack front to back on the lift.

Installation of the safety brackets required more thought than was expected.  If the supplied M10 x 25 bolts are inserted from the mid line outward toward the rails, then they are too long (DSC05726).

DSC05726  showing the excess length of the bolts when installed from the mid line.  For the purpose of the photo, the bracket has been reversed for better visibility.  When the bracket is properly placed the pair of large access holes (for tightening) are toward the viewer, and to the left.

Alternatively, if instead M10 x 20 bolts were used, the process of holding the corresponding nuts on the rail side through the access holes would be difficult.   The solution was to place a table below the bridge jack and lower the lift until the bridge separated from the rails and the rollers were elevated above the rails (DSC05730). 

 

DSC05730 showing the rollers elevated above the rails.

It was then possible to insert the supplied M10 x 25 bolts from the outside toward the mid line (DSC05732).  An ideal solution since it provided maximum separation between the bolt heads and the rails, and the bolts can not be displaced once installed.

DSC05732  of the M10 x 25 bolts after being inserted.  Note the space between the bolt heads and the blue rail.

When attaching the bracket and tightening the bolts, a spacer (thin flat file) was placed between the bottom of the rail (blue) and the bracket (black) to maintain a uniform distance.  It was also necessary to slightly elongate the factory drilled hole on one of the brackets to provide enough clearance so that the bracket would not scrape the rail when the lift is moved.

DSC05736  of the installed safety bracket on the underside of the utility rail.  The bracket prevents the jack from "jumping" off the rail when being moved.  The photo also shows the placement of a backing wrench for use when tightening the bolts.

The operator manual suggests using a hydraulic fluid equivalent to Mobil DTE 13M.  An oil from McMaster Carr was selected that is described as Mobil DTE 24 Mineral Base Oil with ISO 32 and SAE 10W  (cat 2158K11, 1 gallon $25.43).

DSC05744 of the BendPak RJ-45 on the BendPak HD-9 four post lift.

Youtube videos include:

https://www.youtube.com/watch?v=R8i2eZMDQho