What's in the workshop this week?

[MikkiJayne]

This is the other side of the F125. It does make sense that these contacts are the range selection for the TCU, and the others are just switches for extra stuff. The base contacts look fine, but the moving contacts do look pretty dirty. I cleaned all this up with scotchbrite, greased it up and bolted it back together.





I learned a new way of refilling 5HP gearboxes the other day - pump it in through the oil cooler return I got 6 litres in to it this way, compared to the usual 3 from underneath. This should mean it is very close to normal level on first start and just needs a little bit topping up once its up to temperature, or possibly a little letting out.





Taking the gearbox off the engine stand and putting it back on the engine and gearbox machine:





The refurbished torque converter should be back from JP Automatics tomorrow so I can put the engine and gearbox back together, and a replacement exhaust manifold will hopefully be here on Tuesday.

In case you've never seen where the main scuttle drains are, here's a pic:



[img]

[HPsauce]

Originally Posted by MikkiJayne

This is the other side of the F125.

Looking at that there's a definite "dodgy" section on the #2 ring (innermost being #1) roughly where I'd expect R to be (give or take a bit) AND the corresponding contacts look pretty ropey too....
(Number 4 looks a bit marginal too in the same area)
I reckon that #2 is probably supposed to go open circuit when in R but was actually shorting across to the "bypass" section of the track, thus confusing the TCU.

While you had it apart, I don't suppose you had time to test it with a multimeter and confirm which track connects to which pin?
I started trying to work it out logically and did reckon the inner one was pin 1 then pin 2 but the next going out might be 5.....
(Maybe I'll just open up my cleaned up old one and check?)

[HPsauce]

Originally Posted by HPsauce

While you had it apart, I don't suppose you had time to test it with a multimeter and confirm which track connects to which pin?
I started trying to work it out logically and did reckon the inner one was pin 1 then pin 2 but the next going out might be 5.....
(Maybe I'll just open up my cleaned up old one and check?)

OK, I've done that one mine, I'll put the details in the other F125 thread, but the relevant bits are:
The 5 sectors from the inside outwards are pins 1, 2, 5, 3 and 4. And the 5 corresponding wires are not in that order....
So the segments with discolorations are pins 2 and 3 which are largely to do with identifying PRN.

[MikkiJayne]

The refurbished converter from JPAT arrived:



Filled with oil and installed in the gearbox:



And back on the engine courtesy of the machine:



I've made a lot of tools in my time, either to solve problems or to make life easier. The engine and gearbox machine makes life so much easier when doing this one very specific job that it has to be the best of the bunch. When the two are lined up well, they can be joined with a push from one finger

[Regulus]

I have no doubt you perfected the tools and procedures, MJ
As I am working on my own car atm, I look at your past projects to get a better grasp of what I am trying to do.
Removing the engine from the car like you are able to do, must make every small detail so much easier. Even if I understand that is quite an undertaking.
And thanks again, for every workshop post you make

[spannerrash]

"I learned a new way of refilling 5HP gearboxes the other day - pump it in through the oil cooler return I got 6 litres in to it this way, compared to the usual 3 from underneath. This should mean it is very close to normal level on first start and just needs a little bit topping up once its up to temperature, or possibly a little letting out".

That's the way I'm gonna try doing mine the next time I do it. I'll be trying it at the oil cooler end of the pipe though.

[MikkiJayne]

Engine back in:



Hopefully I'll get it all buttoned up and running tomorrow and see if all this effort paid off...

[The_Laird]

Originally Posted by spannerrash

"I learned a new way of refilling 5HP gearboxes the other day - pump it in through the oil cooler return I got 6 litres in to it this way, compared to the usual 3 from underneath. This should mean it is very close to normal level on first start and just needs a little bit topping up once its up to temperature, or possibly a little letting out".

That's the way I'm gonna try doing mine the next time I do it. I'll be trying it at the oil cooler end of the pipe though.

I think that’s how Mackies do it. They flush the warm oil through the oil cooler via their pumpy-squirty machine which has a very fine filter.