Amazon: New (to me) 1963 Volvo 122

[Othen]

Originally Posted by Volvo_133

Hi Alan,
Apart from the cylinder leak, I can see 3 other issues in your pictures to address when you rebuild the brakes.
The front and rear shoe are in the incorrect location in the drum and need swapping front to back.
The bottom spring is better the other way round (the straight bit without coils) to the rear. This prevents the H brake arm fouling on the spring when operating the H brake.
The long woodruff key on the halfshaft should be fitted with the tapered end facing down and also facing inwards towards the diff.
Have a look at various videos showing the correct assembly.
You are going to notice a vast difference in braking power with dry shoes fitted the correct way round.
Chris

I remembered something the PO told me when I bought the motor car (2 weeks ago) Chris. He had the rear wheel bearings changed by a garage in 2009 (when he bought the motor car)and had suspected something was not quite right since.

As you have pointed out (and thank you for that, I may not have noticed if you had not mentioned it), the shoes are back to front so the leading edges are where the trailing edges should be. I noticed from the MoT history that the motor car had issues with the rear brakes being imbalanced going back to 2012, which supports my theory. This is what the brakes are supposed to look like:



... so much for paying garage services to do jobs wrong. The woodruff key was also inserted incorrectly.

The rear brakes will be assembled correctly for the first time in 13 years by the end of this week. Thank you for your help, this forum really is invaluable.

Alan

[Burdekin]

Originally Posted by Othen

Excellent Chris - I had rather suspected the brakes had not been put together properly - particularly the woodruff key (the drum came off a bit too easily I thought). I have the Volvo green book for the 120 and was going to put the brakes back exactly as per the photo on pp 5-11.

Many thanks Chris - that was really helpful.

Alan

The pics might be gone now but the late 940turbo did a write up regarding the rear brakes. Worth a read.

[Ron Kwas]

Alan;

In that picture of the rear brake assembly, Item No 1 is shown as the Front Brake Shoe, which (only indirectly) gives us the clue (as does the E-Brake Cable departing the assembly to the left, and the E-Brake Lever on the right) that the side shown is the LEFT side...and this also means that the Brake Shoe with the cropped leading edge MUST also be installed on that side (because of the Leading Shoe/Trailing Shoe thing!):

There are several ways to get the assembly wrong, all which I expect can result in the "rear brakes being imbalanced".

See also: https://www.sw-em.com/brake_notes.ht...shoe_rear_shoe

Good Hunting!

[Othen]

Originally Posted by Ron Kwas

Alan;

In that picture of the rear brake assembly, Item No 1 is shown as the Front Brake Shoe, which (only indirectly) gives us the clue (as does the E-Brake Cable departing the assembly to the left, and the E-Brake Lever on the right) that the side shown is the LEFT side...and this also means that the Brake Shoe with the cropped leading edge MUST also be installed on that side (because of the Leading Shoe/Trailing Shoe thing!):

There are several ways to get the assembly wrong, all which I expect can result in the "rear brakes being imbalanced".

See also: https://www.sw-em.com/brake_notes.ht...shoe_rear_shoe

Good Hunting!

Yes, exactly, the photo in my post above (from the green book) is of the left side (NSR here in the UK) brake, so it would rotate anti-clockwise (oposite to your very clear diagram above) as pictured. You are right, the leading edge must be installed the other way round from the photo of the brake I took apart (also NSR) a few posts ago - repeater here for clarity:



The shoes were installed so that what should be the front shoe is at the rear and vice-versa, I think this happened when the garage reassembled them after replacing the rear wheel bearings in 2009.

I'll make sure everything is put together the right way round this week.

Many thanks,

Alan

[dgbalfour]

Yes, this’ll be the first time the rear brakes have been correctly assembled since I wrote this in 2009:
https://www.volvoforums.org.uk/showthread.php?t=81763

[Burdekin]

940_turbo's thread. https://www.volvoforums.org.uk/showt...ht=drum+brakes

[Othen]

Originally Posted by dgbalfour

Yes, this’ll be the first time the rear brakes have been correctly assembled since I wrote this in 2009:
https://www.volvoforums.org.uk/showthread.php?t=81763

Thank you for that David - very candid.

I'm pleased that I know what is wrong (so I think!) and will have it fixed for about £100 this week. The Brookhouse Volvo package should be here today, so I'll probably fit the parts tomorrow and the brakes will be all new.

:-)

Alan

[Othen]

Originally Posted by Burdekin

940_turbo's thread. https://www.volvoforums.org.uk/showt...ht=drum+brakes

Many thanks.

Alan

PS. See below, I have backed off both adjusters fully - fortunately neither was seized.

[Othen]

I'm waiting for the brake parts to arrive, so was just doing some tidying up jobs on GAM today.

The paint on the NSR wheel arch had mostly fallen off allowing a bit of surface rust to develop, I treated it with some Kurust last night and this morn gave it two coats of smooth red Hamerite - protection is more important than looks for this old girl :-). Then I wound the two brake adjusters out completely, I was delighted that neither had seized (in fact that both moved very easily - surprisingly) so I put some copper grease on the exposed threads ready for brake fitting.

So far so good, I was just packing up my tools when I noticed the very nice newish chrome trim strip on the NSR quarter was hardly attached to the motor car. An investigation revealed that only two of the five metal clips that are supposed to hold it on where in place, these chaps here:



There was no sign of the others, maybe they had vibrated loose, perhaps they were not fitted when the trim was replaced, I don't know. Anyway, I needed a solution to an unexpected issue and a few minutes looking through my assorted fasteners box turned up 4 of these:



... which fitted both into the rail and the hole just about perfectly and secure rather better than the original idea. I have no idea what those fasteners were designed to fit, but they have fixed the trim piece very well indeed:



One pace forward... one step back :-)

Alan

[Derek UK]

Problem is that they don't allow the strip to fit flush, as you can see. You could cut the inner flanges right back to allow that. The original clips often rust away. They should also have a dob of dum dum type mastic on the inside to stop the water getting in. The original clips are available.