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Posted By : Steve Cureton, 02-Aug-2003, 09:42pm
I'm trying to replace the timing cover oil seal on my Herald but can't get the pulley wheel nut to undo even with a drift and 2lb hammer. I presume it's a
standard right-hand thread and there doesn't appear to be a tab washer or anything else stopping it. I've tried reasing oil and even applied some heat
(although I've been careful so I don't melt the existing seal) Any suggestions would be appreciated.
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Posted By : Ben Ferguson, 03-Aug-2003,
00:50am
I took mine off yesterday (engine out of the car) to take the crankshaft out. I managed it by clamping a smallish vice that happened to be attatched to
a 3 ft lenght of 2x4. I then found the worlds biggest adjustable spanner and put it over the nut. I then gave it several hard hits with a hammer and it
came free. I think the short sharp shock helps, otherwise you just end up turning the engine over. I know it may unfortunately be that simple however,
as with the flange on my gearbox that really would not come off!
Hope you get it sorted,
Ben
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Posted By : Steve Cureton, 03-Aug-2003,
12:38pm
Ben
The engine is still in the car, so with it in gear and handbrake on I still can't budge it even with the short sharp shock treatment. Presumably
there was nothing else such a left-hand thread or something else that might stop it?
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Posted By : William Davies, 03-Aug-2003,
10:00pm
I know plenty of people who've done this using a cold chisel and lump hammer to undo the nut, but it's a bit barbaric for my tastes. Some time ago I
invested in an approximately 2ft long breaker bar with 3/4" square drive, plus sockets for both of the usual Triumph crankshaft nuts. Using it with an
engine out of the car can be tricky as the whole lot wants to tip over, but it's never failed to undo the nut. If the gearbox is attached, take the
shifter housing off and manually lock the gearbox in 2nd and 3rd (or is it 1st and third? - it will only go one way) so the crank won't turn. If the
gearbox is off then you need to jam a vertical lever down the back of the block so it wedges between the ring gear teeth and the location dowel - you
will need an assistant to hold the lever while you turn the bar.
Of course if the engine is still in the car the process is very simple. Take off the LT lead so that the engine won't fire and locate the socket on the
pulley, with the bar wedged againt the chassis in the direction of rotation. Hit the starter - the torque of the starter motor will be plenty (in my
experience) to loosen the nut. I did it once on a Dolomite without dixconnecting the LT lead - there was a clang as the pulley came off and dropped to
the ground with the socket and bar. No harm done, but not recommended.
All of the above will be pointless if you've not knocked back the tab washer,
Cheers,
Bill.