Posted by Keith in Washington on Monday, January 29, 2001 at 12:04PM :
In Reply to: SHOULDER BELT ANCHORS IN WM-300 posted by Paul on Sunday, January 28, 2001 at 11:20PM :
I have installed shoulder belts in 2 different trucks. A 52 PW and a 42 WC53 Carryall.
52 PW
On the 52 PW which is most like your truck I mounted to the existing rear door post. It is quite simple. Remove the top part of the head liner so that you have access to the top of the rear door post. The rear door post is a box that has been bent then welded. Here is what I did The top of the box is open and provides access for bolting. I drilled a hole in the face of the box that faces toward the interior of the cab. This hole will be large and will match your mounting bolt. Placement of this hole is a low as you can reach into to top of the box to hold washers and a nut. Buy a bolt of the correct diameter that has about 3/4inch of untreaded shank and about 1 1/2 inches of threads. Place the bolt through to hole on the seatbelt shoulder support slider. Place a 1/2 thickness nut and tighten all the way to the end of the threads. Place a large washer on next. Put the assembly through the hole that you just drilled and place a second large washer followed by an lock washer and nut. Tighten. The two large washers one on each side of the sheetmetal box door door post increase the surface area so that the nut does not rip throught the sheet metal. The only thing that I do not like about this arrangement is that that top of the shoulder belt seems to be a little too high and maybe a little too far forward. Placing it lower on the door post is possible but getting the washers and nut on from the inside of the post becomes more difficult.
42 Carryall.
I took a slightly different approach on this one. I mounted (welded) an assembly to the back of the door post and mounted the belt to it. Here is more detail. I took some heavy sheet metal (can't remamber the gage but make it thick) I bent it at 90 degrees so that I had one side about 2 or 2 1/2 inches wide and the other side is the exact width of the inside of the back of the door box post. (Looking at the back of the door post it looks a little like an "H" the piece I just described fits inside this "H" snugly against the back surface of the door post and touches both the inside and out side lips of the "H" door post) The piece is about 4" long. I then welded triangles of metal at each end to provide strength to the piece I made(90 degree bend). I then clamped the piece in position on the door post to check fit and determine where the hole for the belt should be drilled. Once the hole position was determined I welded a nut to the inside face of the piece so that it would be easier to mount the belt. I then test mounted the belt to the piece and clamped it to the back of the door post moving it up and down until I found the most comfortable spot. I then unbolted the seat belt from the piece. I then welded the piece to the door post. I welded along the back edge door post along the whole length along the top and bottom ends of the piece I built to the flat back side of the door post and along the entire length where it meets the outer lip of the door post You will need to grind this last weld down some to get a smooth fit of the cab liner. Cut a hole in the liner to match the hole for the shoulder belt. Then take a bolt of the correct diameter with about 3/4" of unthreaded shank and plce it through the hole in the shoulder belt slider. Then place a 1/2 thickness nut and tighten it all the to the end of the treads. PLace a large washer on next and put a little thread lock on the threads and mount it. (The large washer is top stop the out side nut from ripping up the cab liner.
Both of these systems seem to work just fine. The difficut part of the job was finding a good floor mount that was in a position that gace a straight shot to the shoulder mount. In the PW i bolted it to the floor and used large washers. On the Carryall I buit a 90 degree bracket and mounted it to the body mount bolt on the floor.
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