Ferocious brakes on our M8 Greyhound

[Malcolm Towrie]

Marco, I'll need to look at the layout on our M8 more closely, but I don't think that schematic is what we have so you may be onto something.
Your schematic is in TM 9-1743 but I noticed in that manual the brake drum has one of the wheel bearings incorporated in it, while our M8 does not. After pulling a wheel, you remove three slot head screws and the drum just pulls off the axle flange. So was a major brake redesign done sometime? Anyway, I'll look more closely at ours to confirm what we have.

Malcolm

[Big D]

Hi all,

I think there were three variants of the hydrovac on the M8/M20. Mine is the long one that looks like the one used on the halftrack. There is a shorter stouter version (I think the latest?) that looks a little like the one on the White Scout Car. I’ll see if I can track down the article that describes the development/variations on these.

[Malcolm Towrie]

Marco, I was wrong. What we have is exactly as per your schematic, with two lines coming back from the master cylinder to the Hydrovac. So we have the stock master cylinder and Hydrovac. As I said, I'll drive it some more and if it doesn't settle down, I'll check braking pressure.

Malcolm