After I changed the Trav's rear axle hub bearing and oil seal back in May , I've been intending to take the wheel off and check that everything was OK. I finally got round to it, and found that everything was pretty good, but there was a bit of float on the hub- that is to say, it could slide inward and outward rather a lot. The Workshop Manual says that the bearing should protrude beyond the face of the hub; in fact, it was about 1mm below the face, which felt like quite a lot when I rocked it to and fro.
So I dismantled it again.
I got some heavy cartridge paper and measured the combined thickness of ten sheets. This gave me 3.5mm. So I reckoned that three thicknesses would be about right. I drew around the bearing and cut out three paper shims, like this
...and then reassembled the hub.
According to my calculations, the bearing face is about 0.5 mm proud of the hub face, and the book says it should be 0.025 to 0.102 mm. I'm hoping that the fudge factor will take the discrepancy on board. And I'll check it again next week or so, to make sure that it isn't leaking.
The designers had a sense of humour.
ReplyDeleteHave you ever tried to work on the master brake cylinder? I gave up as impossible since buried in a sharp angle of the floor and taught my then partner to pump the pedal a few times to build pressure but also how to anticipate and not use the brakes. How the heart would race if you forgot and nothing happened when you hit the pedal!!
O happy days.
Caroline.
I had to replace the return spring for the clutch pedal, which involved some Very Serious Jiggering About around the master cylinder, as everything was rusted into place. It took the blowtorch and chisels and Mole grips and lots and lots of time....
ReplyDeleteAnd you can do that with a bit of cartridge paper?
ReplyDeleteIndeed you can. At sea we used to forage the redundant nautical charts from the bridge, and cut them up for gaskets. And I used to rescue bits of them for myself, as they are such nice things.
ReplyDeleteSomeone gave me some charts once of the sea divided into shipping areas, they were facinating. A bit like looking at the negative of a photograph, if you see what I mean. I wonder where they got too....
ReplyDelete