There are 2 different pin sizes for the spanner wrench pins that fit into the crank pulley this is regarding the 11.8mm size, the other size is 7.5mm. For dimensions on the 7.5mm, post 11 by guylr
. There is not much to it and posting it on here was an after thought so there are only pics of the finished product, however I don't think step by step pics, directions are really needed as I hope if you are doing a job that requires this, you are able to fill in the blanks on your own, I have made sure to give the dimensions that are needed. There are 100+ ways you could do this. So here is a simple, over built home brew spanner wrench, total time working on it about 1 hour.
-Metal plate, roughly 4" x 8"
, 3/8" aluminum plate in this case(what I had). I would say as thin as 3/16" aluminum would do fine and 3/16" - 1/4" steel plate would do. Mine was 5" x 8" and trimmed corners as you can see in the pics, really the only reason to trim it down is aesthetics. A rectangle would be just as effective.
, as long as you want your handle, Mine happens to be 1.5" diameter 1/16" wall I had laying around. For other stuff like this I have used 3/4"-1" black iron pipe as it is cheap or 1" square tubing.
-1/2" x 2" bolts with nuts(QTY 4)
, to become the pins. I ground off the exposed threads of the bolts I used to allow some more wiggle room, however they do fit with our removing the threads. You could also use smaller diameter bolts and of coarse reduce the size of the hole you drill for them.
-3/8" bolts with matching nuts & washers(QTY 2 bolts/nuts, 4 washer)
, to bolt handle to the plate. Add the thickness of the materials you are using and get appropriate length bolts.
Tools, just the basics(get as fancy as you want, this was done at home. If I did it at work it would have been on a CNC mill):
, hacksaw, bandsaw, jigsaw.... to cut the plate with if needed, desired.
, I think this one is self explanatory. Again I hope you can fill in some blanks.
-9/16" drill bit
, to drill the holes for the 1/2" bolts. One of those stepped drill bits
works great for this for people who don't have a drill that can fit a 9/16" drill. Yes 9/16" holes for 1/2" bolts, it allows for error when drilling and will give you some wiggle room to work with to align the bolts.
-3/8" drill bit
, to drill the holes to attach the handle.
-1.5" hole saw
, to cut the center access hole for the pulley bolt.
-basic hand tools to assemble
, here is that fill in the blank thing again
The center hole
, must be big enough to pass a 22MM socket through(roughly 1 1/4" OD), a 1 1/2" will allow you to pass the pulley bolt through it, though you really don't need to.
The holes for the pins
, are on a 2.5" circle or 1.25" from the center in a evenly spaced square pattern, the holes are 1.78" from center to center.
Bolts for the handle
, place as you see fit.
Total cost, $12 in hardware. The plate and pipe were on hand.
Thought this may help a few of the automatic owners in the future. The manuals owners can just put the transmission in 5th/6th gear.