Restoration of Canadian Scout Car Ford Lynx I, Mk.III No.1726

[lynx42]

The accelerator pump slave cylinder was in a pretty bad way but as I said earlier, I had purchased a new old stock one at a Corowa Swim-In auction.

There is a thick rubber hose connecting the slave cylinder to the supply pipe. This is to allow for engine vibrations which if it was solid, could work harden and fracture the supply pipe. The slave cylinder bracket bolts onto two of the manifold studs. I had two different types of brackets so I think the now unused one is from either a later or an earlier Lynx.

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What a beauty. It still had the hydraulic oil inside 70 years later as I found out the hard way when it sprayed all down my front.

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An interesting brass notice still attached after all these saying to use Brake Fluid only.

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The thick rubber pipe was still attached to the new pump and in brand new condition.

Rick

[lynx42]

I've been in Melbourne for a few days so now home and back to the story.

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I started to strip down the rear diff. I said before that the rear diff was the Lynx Achilles heal. I located another diff assembly at Childers, a town in Central Gippsland, which had been used under a farm trailer. It was pretty complete but had had the spring hanger bases moved about 1" inwards. Still it was better than nothing. More about that diff shortly.

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I went and saw Andy Seymour, 'The Brake Place Berwick' who fitted new brake linings to all 8 brake shoes, and turned out the brake drums to suit.

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Both front and rear were done. Andy also pressed into place the bearing cups for the new bearings. All the bearings were purchased over the counter at the local bearing shop where they were all in stock.

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He also supplied the flexible brake hoses from the rough samples I had. You might notice that I marked everything so that I knew what went where on re-assembly.

The complete rebuild of the brakes cost me a few bob but at least I know that I will be able to stop OK.

Regards Rick.

[lynx42]

This is how things came apart during the strip down of the rear brakes.

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As you can see they were pretty grubby but the brake linings were not to bad.

[lynx42]

As mentioned earlier, the rear spring perch bracket had been moved inwards for the farm trailer so I had to grind them off and reposition them. I had to wait until the chassis came back from the sandblasters to ensure that I got things lined up correctly.

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Regards Rick.

[lynx42]

I thought the rear diff was OK as everything turned. I took out the drain plug and nothing came out. There were plenty of metal scraps in the drain plug.

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I stuck my finger inside and it came out with a silver sheen and accompanying bits of ground up metal. BUGGAR!.

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So the rear diff was pulled apart and what a mess I found. The pinion inner roller bearing was next to non-existent. It had ground itself to smithereens between the pinion and crown wheel.There were no rollers left. The crown wheel and pinion were beyond re-use. Both had many many divots and dents ground into all of the teeth.

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The pinion nut was seized onto the shaft and the cotter pin broken off so there was no alternative except to used a lot of heat and a fine 1mm. cutoff disc. Fortunately I was able to use the universal flange again.

I was fortunate that I had located a complete Lynx front axle around about 2001 and that gave me a good crown wheel and pinion to use. Both these rear and front diffs had come from the same vehicle originally. The rear diff went to Childers and the front to Newry. Only about 100km apart. The cut down Lynx had been used as a loader for a sand pit up at Swifts Creek, Vic. It was cut up and sold about 40 years ago, the rest went to scrap. I swapped a White Scout Car gearbox for the front diff.

Regards Rick.

[lynx42]

New seals and bearings were the order of the day. As said before, the local bearing shop had them in stock. Lucky for me I run a trade account there.

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The rear diff housing was then split in two, cleaned up and with new bearings and seals was readied for fitting to the springs when the chassis came back. There is a small wear plated inside the diff housing and that also was renewed to help keep things in line for the future.

Rick.

[lynx42]

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All of the bearing cups had quite a lot of pitting and marks from standing in one place for so long.

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The diff oil was a funny colour and was quite metallic with plenty of silver flakes in it.

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The only parts useable from this diff were the two halves of the housing and the brakes. All the rest were replaced.

Rick