Showing posts with label mg. Show all posts
Showing posts with label mg. Show all posts

Monday, 7 June 2021

Front Brakes Rebuild and Fitting


Having degreased and painted the callipers it was time to rebuild them. You can buy a rebuild set that includes the outer metal housing for the outer seal and the seals. I also needed to replace the pistons as well. I thought it they should fit but I did have a few issues trying to fit the outer metal housing. 

MG Midget Front Brake Callipers rebuild

First job was to fit the outer metal housing and it was this part that caused me the most issues. What I found was that whilst one of the housing's fitted really well the other didn't. I ended up buying another set from another supplier and that fitted just fine, so I assumed it was a bad batch.

In order to fit the housing without bending it, which is very easy to do as it is very thin metal, you need to press it against a very flat surface. I used a piece of chipboard and my bench vice.

MG Midget Front Brake Callipers rebuild

MG Midget Front Brake Callipers rebuild

MG Midget Front Brake Callipers rebuild

This worked really well for me but you have to make sure that it goes in square. Any damage and you'll need to buy a new one and try again.

With the housing in place the outer seal slots in nicely.

MG Midget Front Brake Callipers rebuild

Then you can insert the inner seal.

MG Midget Front Brake Callipers rebuild

Once you have completed this four times you are ready to fit the pistons.

MG Midget Front Brake Callipers rebuild

I followed a recommendation to use this type of red rubber grease when fitting the pistons.




You smear it on all the surfaces and then you should find that the pistons slide in with some resistance.

MG Midget Front Brake Callipers rebuild


MG Midget Front Brake Callipers rebuild


I replaced the seal between the two halves as well to help stop any leaks.

MG Midget Front Brake Callipers rebuild

Once all done you can now fit them to the stub axle. These are secured with the two bolts



Checking that the brake disc is central in the groove you can fit the pads. The new pads I bought have a anti vibration pad at the back of the pad that is pressed by the piston. You can buy anti-squeal shims which need to be lubricated with copper grease.


Once in place you can fit the spring clip and split pins.


Then you can fit the bleed nipple and blanking plug. Make sure the bleed nipple goes on the top so that air comes out easily when bleeding the brakes.


Then you are all set to connect this up to the braking system.

MG Midget Front Brake Callipers rebuild

Saturday, 3 April 2021

Steering Column rebuild and fitting

Whilst I'm waiting for the front stub axle bushes to be fitted and reamed and the wheels sand blasted and powder coated with silver paint, I thought It would be good to sort out the steering column so that it was ready to turn the wheels when the front suspension was finished.

I will be getting a nice new steering wheel as this one has seen better days and certainly isn't the one that came with the Midget in 1965!


Plan of attack was to take it apart and wire brush all the old paint off and then apply some nice new paint. Most of it was just dirty.
 


The steering column is basically two parts. The inner column and the outer sleeve. To separate them you have to remove the fabric bushes. One at the top of the sleeve and one at the bottom.

First remove the brass clip that holds the bottom fabric bush by sliding out of the eye slit.


The bush is looking quite thin and worn. So will be replacing that.


Next up you have to remove the steering wheel. 


Remove the horn push by unscrewing it and undo the main nut. 


The steering wheel will come off once you have also removed the electric contact point for the horn and indicator. 


Then you can slide the inner column out of the outer sleeve. After cleaning off the old paint I sprayed some primer and black chassis paint on the column and started to rebuild it with some of the new parts, like the fabric bushes and the seating rubber.


I started with the lower bush, but before you can fit the bushes you need to soak them in what the Haynes manual calls heavy oil. 

I did some research and found that graphite oil is what's needed and then found this stuff online for a few pounds.


Gave them a really good covering in the graphite oil. 



An then started to fit them. I only found out about this oil after I had test fitted everything, which is why the pictures show them still nice and clean. But now the fitting is complete and the column is just right and doesn't squeak when you turn the wheel.






Then the upper bush, which was a bit more fiddly to get it square.


But managed it in the end.


The old seating rubber wasn't that bad but made sense to get a new one.



Another part bolted on to the chassis


Next up is the dust excluder. Which I found really tricky to fit.


It needs to go in this hole.



Like so.


But then I found trying to slide the column through it without it coming away really difficult and I tried about three times, but it kept coming off. 

In the end I realised I could just about fit the dust excluder with the column in place by using a very small flat head screwdriver to get the lip of the rubber over the metal edge and then slowly turning the dust excluder round the hole whilst using the screwdriver to make sure the lip of the rubber was in place. Once I had worked that out, it only took 4 minuets! 


Then I could grease up the teeth on the pinion. and fit the column. Make sure you have removed the bolt from the column before fitting.


It is at this point that you should check the alignment of the column and the pinion. They should be perfectly inline. If not you might need to add a shim behind the steering column mounting bracket. They don't make them up any more so you'll have to work out what thickness of shim will give you the perfect alignment, as that will help to make your steering nice and light.



Then time to fit the rubber packing and the cap of the bracket.


Once I was happy it was all in place I fitted the bolt.


Now I am not sure if this part is standard or someone manufactured it but it did come off the Midget so I thought I should clean it up and put it back. It is designed to keep dirt off the end of the steering column and pinion.

I can't see any example of it on any diagrams but I like the idea of it. 


One half is held in place by the steering rack mount and the other attaches to a bolt that has been put through the suspension bracket. Just need to find the bolt to hold it in place. It's got to be around here somewhere!



But it is all fitted and ready to start turning the wheels when they are ready to go back on! Good thing is that the whole mechanism seems really tight.

Even though the steering wheel is a quite shabby just having it in place is a good feeling! Might have to get a seat in place to see how it feels all together!