Speedo not working

tuggersbmx · Senior Member

Speedo not working

KJB · Guru

Try running a new temporary "dedicated earth" to the cluster....

blaze · Guru

It would still have a cable drive speedo wouldn't it, check the cable if it has one.
cheers
blaze

tuggersbmx · Senior Member

Yeah I believe it has a cable run speedo. Temp Earth I will try if possible. Il pull apart dash tomorrow. See how I go. If I can't solve il let ya know. Cheers

blaze · Guru

mostly the square drive on the cable get rouunded corners and wont drive, Gearbox may have a right angle drive that the cable srcews onto, check the gears, often plastic/nylon and they strip.
cheers
blaze

Whenarewethere · Guru

Both my previous cars, a Peugeot 504 & Seat Ibiza, did over 250,000 km. Both their speedos died. With the Seat I knew the speed of the car from the tacho in each gear & had a little chart just in case I forgot.

Jaahn · Guru

tuggersbmx wrote:
Yeah I believe it has a cable run speedo. Temp Earth I will try if possible. Il pull apart dash tomorrow. See how I go. If I can't solve il let ya know. Cheers

Hi Mick smile

If it has a cable drive which I also think it will have, just swap the cable from the other bus for start. There is no electricity in the speedo meter that makes it work just the cable going around (or not !!)

Jaahn

Whenarewethere · Guru

On my cars the cable had worn to some degree but something in the back of the speedo had worn out, as the cars were so old it was not worth replacing.

tuggersbmx · Senior Member

First thing il be doing is swapping over cable from parts bus to road ready bus. The rego inspectors / engineer (who I need to get a certificate off before I get rego) won't give the bus a pass without the speedo working. Pricks. Unless if I can't fix it I might be able to get some sort of digital one and calibrate with GPS. Mick

outlaw40 · Guru

Engineer isnt a P#*ck as you put it he has to put his name to the work you have done , i would want it right if my name was going on the paperwork too .

KJB · Guru

There are plenty of Digital / GPS style units on eBay for under about $50 . Cheap, easy to install and clear display. They may be the answer you are looking for.

I have seen these used in Hot Rod conversions and motorcycles. Personally I cannot see why they would not be legal , they are current modern technology. Worth checking out.

Aus-Kiwi · Guru

As said check inner cable ? I have fixed with hammering cable square again and re oiling / greasing . If elect ? Change the transponder .

tuggersbmx · Senior Member

Will hopefully have a chance tomorrow morning to inspect a bit. I've got a spare cable so that will be first option to repair. If no go then will look at electronic replacement. See how I go tomorrow. Cheers

Jaahn · Guru

tuggersbmx wrote:
First thing il be doing is swapping over cable from parts bus to road ready bus. The rego inspectors / engineer (who I need to get a certificate off before I get rego) won't give the bus a pass without the speedo working. Pricks. Unless if I can't fix it I might be able to get some sort of digital one and calibrate with GPS. Mick

Mick smile

That's a bad attitude saying that. The rego inspector is just doing his job as he is required to do to certify the bus is roadworthy. I am disappointed to hear you call him a prick. That sort of attitude is what has caused the virus explosion IMHO. disbelief

Jaahn

tuggersbmx · Senior Member

He's not really a prick. I know he's doing his job and I'd actually prefer to know my build us safe ECT.

Just made everything more expensive and delayed my build for quite some time. It's more that rego requirements have changed in Canberra now and other state mod plates are not recognized. The bus was already engineered to be a motorhome in new but I've had to do the whole process again. So it's just been a pain in the butt.
Engineer is just doing his job. So are the rego inspectors but they can be wayyyyy over picky in Canberra.

tuggersbmx · Senior Member

I got around to pulling out the speedo cables at gear box end. They seem different first. Pictures attached. One with the gears on it is the one I need to get working. As you can see from the pics the gear is pretty worn out which would most likely be my issue of no speedo working.

Unless the other one which just had the one slot at the end of the cable need to pulled apart further in the gearbox to access the same type of gear ending? But I cannot find a way to pull anything more off.

Also I need to jump back under the bus with the gear ending to see how to remove the actual gear ending itself. Hopefully just a c clip or something. The gear would not just simple pull out.

Would a replacement gear shaft from a patrol possibly work?

Cheers for any help guys.

Once again you are right about the engineer not being a prick.

STRETCH ARMSTRONG · Senior Member

I think that gear is matched to the diff gearing so the speedo reads correctly.

tuggersbmx · Senior Member

Hi stretch. Yeah I've just researched and that is correct. So in my eyes the one from my other bus with different ratio diff won't work anyway.....but I still couldn't get the metal sleeve that plugs into the end of the gearbox on the FD33T removed. I could get the cable out but not the sleeve that holds the gear pinion. Il order a new gear pinion for the ED33 and buy a digital speedo as well. Cover both sides of things.

blaze · Guru

electronic is ok but I believe gps based speedo dont meet ADR. It would pay to check before buying
cheers
blaze

Aus-Kiwi · Guru

Mark your rev counter to speed on
GPS . May not be engineered acceptable? Can calibrate Speedo by redoing speeds on
Gauge also ! If changing speedo gear is an issue ?!
Theres always equal & opposite reactions !

tuggersbmx · Senior Member

I cannot find a 22t speedo pinion to swap over ANYWHERE! Japan is 6 weeks wait plus with covid probably longer. Most likely 3 months before I get it. I found a purple 21t pinion in Australia which I could swap over and I believe it would put my speedo out a tiny percentage? Maybe 2 or 3. Engineer stated my speedo needs to be within 5%. I'm thinking purple pinion swap over plus gps speedo as back up and he should pass me on that. Fingers crossed.

Aus-Kiwi · Guru

Thats where you can change the speedo numbers to suit !

Possum3 · Guru

If you use the 21t pinion you will be out by 4.55% either over or under reading depending if pinion is on driven side or driving side of speedo mechanism - If there is no GPS to compare it to the engineer doing blue slip would most probably be unaware of discrepancy (unless he is told).

tuggersbmx · Senior Member

Aus-kiwi.

Change gearing at speedo end?

So if I go down one tooth at gearbox end and engineer complains that it's not right should I go up or down a gear / or two at cluster end?

I won't install gps unit and hopefully it goes un noticed.

One more question.

On the speedo cable where I can replace the gear pinion. ( Too one gear smaller) it looks like there's a pin that holds it in place. I would assume it just knocks out? But don't want to go knocking it if it's supposed to screw out?

STRETCH ARMSTRONG · Senior Member

If that is a slot up the side and hollow through centre of the pin then its a spring pin. Don't know their real name. Just use pair of pliers on protuding end to close gap and it should just slide out. Bit different to the holdens and tojo l'm use too.

Possum3 · Guru

STRETCH ARMSTRONG wrote:
If that is a slot up the side and hollow through centre of the pin then its a spring pin. Don't know their real name. Just use pair of pliers on protuding end to close gap and it should just slide out. Bit different to the holdens and tojo l'm use too.

They are called Roll Pins and should be pushed out with a mandrel.