I know most of you just whack the 36mm wrench (or adjustable wrench) with a hammer to remove the fan clutch but since I have the factory wrench (bought it when I worked for the dealer) and it does make the job somewhat easier I made a drawing of the dimensions so if someone wanted to make one (I've read a few posts with requests about the dimensions) here is a guide. The actual tool has a wrench on the other end for diesels, I left that part out of the drawing. The wrench is made out of 1/4" material with a thin piece welded on the end to build up the thickness, I'm not sure of the purpose but I have a couple of thoughts 1. since it was designed as a shop tool, maybe it's for more durability or 2. it helps span the gap between the pulley and the hub nut making for easier use. I personally think it would work fine with just the 1/4" thickness since it doesn't take a lot of stress. Anyway now a drawing is available if anyone has some free time (or a laser cutter) and want to make one.

 

OK, when I made the original drawing of the wrench I left the diesel part off, when I did that I thought. "Now someone is going to ask for the diesel dimensions" That happened earlier today so here are 2 new drawings, the 093 is an update of the earlier one with the diesel end added, the 094 is the double open ended wrench which I wouldn't have bought at the time since I have both of those wrenches in the tool box but I had to buy it as a set. I don't think anyone would go to the trouble of making it but I don't want to assume that again.

 

In your drawings I cannot find a measurement for the distance between bolt holes. Am I missing it, or is it missing? Also what does R48 and R50 mean? On the other end of the tool is open end at 47mm. What is this for?

Dave.

 

If you zoom in you will see from the writing on the wrench(I just tried to zoom in and can't read the writing, I must have done something to screw up the PDF), the left side is for diesels and the right side is for petrol (gas). R48 means 48mm radius, the centers of the holes are on a 76mm bolt circle (or a 38mm radius from the center of the pattern) But I thought you had a TD5, that should use a 32mm wrench and the 47mm left hand side of the wrench. I could be wrong though, I'm just going by what is engraved on the wrench since I've never even seen a diesel in a Discovery. How many bolts are holding the pulley to the water pump?, the V8 has 6 bolts. Judging by the configuration of the diesel end of the wrench, I'm assuming that it would have a 4 bolt pattern and the square opening would fit over the bolts to hold the pulley in place while loosening the hub nut.

 

Ok. I can see the 76mm circle. I assume that to get the hole spacing I would have to divide the spacing by six.(Looking at the diagram, if it was a full circle there would be six holes).

My dilemma is this. It is about 40 years since I went to school, and when I did maths was not my strong point. How do I get six equal points on a circle?

Dave.

 

Put one point aligned with the handle (on the 76mm bolt circle), divide 360 by 6 (degrees in a circle by number of holes) which equals 60 degrees, use a protractor to measure down from the first point on each side and mark two points, then do that again for the remaining holes. It would be easier to do this on a piece of paper then cut out the pattern and transfer it to steel.

Only reason I know how to do this is that I worked with machines most of my professional life, I graduated in '69 so that puts us close to the same age (it does get harder to figure things out every year though, doesn't it)

Gale

 

Can you post up the actual Solidworks or acad file?
I'm trying to get one of these laser cut.

Thanks.

 

Since I'm not familiar with these tools, are there bolts to install through the holes of the LRT-12-093 spanner, or do I install bolts on it which then lock in holes on the viscous coupling?

 

it fits over the bolt heads that are already there, then the open end wrench slides in next to it and off you go.

 

Rather than post it, I can email the file to you, let me know in a PM what kind of file you prefer.