spacer specs for Minitruck / 60 series disc conversion (3 Viewers)

[edwjmcgrath]

It looks like you've got everything correct. I guess I don't understand exactly what the problem is.
It seems like the only thing that could make the stub shaft stick out too long is if the shaft is too long (it doesn't seem to be) or if the bushing is missing (or worn out). It looks like there is a bushing there, but I would start by looking there. It should have a shoulder on it. I sent you a link to the picture.

 

[Leaping Deer]

Will try the mini-truck birf again with the hub end fitted (the guys at the shop did this without me being there so I didn't actually see what was the problem).

Not sure what you mean with the hub end fitted, the pipe doesn't go on the birf itself. All you need to do is take the birt with inner axle attached. Find a pipe long enough and with the correct diameter to fit the inner axle shaft inside. Slide the pipe over the inner axle shaft and slam the side opposite the birf on concrete. Sometimes it takes a couple tries. I use an old piece of Sch40 about 2.5-3ft long.

 

[chocolatelustboy]

Not sure what you mean with the hub end fitted, the pipe doesn't go on the birf itself. All you need to do is take the birt with inner axle attached. Find a pipe long enough and with the correct diameter to fit the inner axle shaft inside. Slide the pipe over the inner axle shaft and slam the side opposite the birf on concrete. Sometimes it takes a couple tries. I use an old piece of Sch40 about 2.5-3ft long.

Sorry - typed that last one late at night - a bit sleepy!

What I meant was that I'll check the length of the birf shaft with the hub.

I've mentioned to the ADL guys a few times now about 'the pipe trick' - they know what I mean and assure me that axles and drive-shafts are all that they specialise in and that these axles are well and truly stuck.

They've explained that they can press the axles out but apparently this tends to damage the splines on the inner axle. So they're suggesting cutting the FJ40 outer axle off the in order to preserve the inner axle for use with the MiniTruck birf.


Does that make sense? Or are these guys just World Famous In New Zealand?

 

[Fast Eddy]

Your shop is just not slamming hard enough or not hitting on concrete. It will come out.

I agree about the brass. You can see it there with the swirled machine marks in it that grab grease and lube the junction there.

The FJ60 and the minitruck outers are the same length. In your pictures it looks like two different lengths. Something is not right. The short one (fj60 and minitruck) is about 7" shaft length. The longer one is about 7-3/8".

and I think I def have the short hub

That is really short. (?) And it's a different casting than the Aisin hubs.

The long body hub is 2nd from the right, the short one is on the right. Is it possible you're showing IFS hubs there? What's the dial look like?

 

[chocolatelustboy]

Fast Eddy - that would make sense about the birfs being the wrong ones: if I need a 7 inch shaft then that equates to 177 millimetres. The ones the ADL guys are using are 188 millimetres which is in line with the long hub you mentioned.

Will mention it to the guys on Monday ;o)

 

[edwjmcgrath]

You said that both birfs are the same length and one is from a mini truck and the other is from a 60.
The only way that you can have long birfs is if both are from 76-78 40'a. That doesn't make sense.

 

[chocolatelustboy]

ok - quick summary of the birfs:

- the "first direct replacement" was visibly longer than the ones from the MiniTruck so they ditched that and apparently found the "2nd direct replacement" which they assure me is a direct replacement for an FJ60
- the photos above show 3 birfs: the original shorter FJ40 birf, the MiniTruck birf and the "2nd direct replacement" birf
- the MiniTruck birf and the "2nd direct replacement" birf both measure 188 mm shafts (7.4 inches which is the same as 7 3/8 inches)

Does that make sense? Or does it sound like the scrapyard didn't actually give me '85 MiniTruck axles?

 

[chocolatelustboy]

ok - quick summary of the birfs:

- the "1st direct replacement" was visibly longer than the ones from the MiniTruck so they ditched that and apparently found the "2nd direct replacement" which they assure me is a direct replacement for an FJ60
- the photos above show 3 birfs: the original shorter FJ40 birf, the MiniTruck birf and the "2nd direct replacement" birf
- the MiniTruck birf and the "2nd direct replacement" birf both measure 188 mm shafts (7.4 inches which is the same as 7 3/8 inches)

Does that make sense? Or does it sound like the wreckers didn't actually give me '85 MiniTruck axles?

 

[edwjmcgrath]

I should have a pair of correct mini truck birfs in my hands later today.
I can do some measurements.

 

[chocolatelustboy]

awesome - thanks Ed - you're a scholar and a gentleman ;o)

 

[edwjmcgrath]

I measure my minitruck shafts at 7".

 

[chocolatelustboy]

thanks fella. looks like a trip back to the wrecker's yard to introduce them to my Universal Fixing Tool ...

 

[chocolatelustboy]

Managed to get some time off work today - popped in to the ADL guys and spoke with a different chap.

I noticed that one of the MiniTruck outer axle shafts is 7 inches. But when put into the hub assembly it doesn't come out far enough for the circlip to go on. In fact, the end of the shaft is flush with the edge of the hub.

However, the other MiniTruck outer axle is slightly longer and measures 180mm from CV to circlip inner. I've attached a photo of it in the hub. Basically it protrudes by about 2mm so the ADL guys are suggesting to fabricate a 2mm washer at the hub end.

Does this look right?

 

[edwjmcgrath]

Did you ever get this solved?

 

[chocolatelustboy]

Hi Ed - Merry Christmas - hope you and yours all had a healthy and happy one ;o)

The ADL guys are going to machine a 2mm spacer to go between the hub and the outer-axle circlip.

Hopefully have that ready for collection in the New Year - then I can get the darned things fitted to the wagon ;o)

Have a great New Year ;o)

 

[edwjmcgrath]

Very odd, but should work as long as the locking hub cover fits on with the long shaft.
Did they consider cutting a new circlip groove in the shaft? Could do that in 10 minutes with a dremel.

Oh yeah, and happy new year to you too. Hope to see your rig out and running soon.

 

[chocolatelustboy]

bugger me - never thought of cutting a new circlip groove! Gotta call them tomorrow to give them a prod so will mention it then.

Looking forward to a better New Year than the past one - for all ;o)

 

[edwjmcgrath]

I'm pretty sure those splines are hardened, but it still should be doable.