according to my newly purchased haynes manual (bought off ebay auction
for $36), you can replace the camshaft with engine in place. you must:
*remove radiator and fan belt (drain coolant)
*inlet exhaust manifolds, rocker gear, pushrods and tappets must also go
*timing cover, gear, and chain removed
*distributor drive gear is last.
with that out of the way, measure the camshaft end float with a
feeler gauge placed between the keeper plate and the flange. if end
float exceeds 0.008in, it will be necessary to fit a new plate. then
remove the 2 bolts and spring washers which hold the camshaft locating
plate to the block. the bolts are normally covered by the camshaft
gearwheel.
remove the plate. the camshaft can now be withdrawn. take care to
remove the camshaft gently, and in particular ensure that the cam peaks
do not damage the camshaft bearing as the shaft is pulled forward.
email me directly for any questions, it's great to be able to share
some info as i've taken quite a bit from this mailing list!
the above was taken directly from triumph tr250 & 6 owners workshop
manual.
Tom Di Iulio
76 TR6 (in pieces)
Denver, Co.
Theodore R. Stevens wrote:
>
> I decided to replace the thrust washers in my TR6 since it was a nice day,
> and the crankshaft seemed was a little loose. Also, I didn't know if they'd
> ever been replaced, and the car has 83,000 miles on it. When I pulled the
> oil pan off I was greeted by a layer about 1/8" thick of metal powder/oil
> sludge at the bottom of the pan. I expected (what I thought was) the worst
> - totally shot main bearings. Surprisingly, the bearings all looked pretty
> good. The front thrust washer had some of the bearing surface delaminated,
> but otherwise not tremendously bad wear.
>
> I asked my neighbor (a mechanic) to take a look, and he pointed out that
> the camshaft had at least 2 lobes worn out. Ouch! I guess I should have
> paid attention to the recent threads regarding cam sources.
>
> I have 2 questions:
> 1) He (my neighbor) said it looked like I ought to be able to replace the
> cam with the engine _in_situ_, if I remove the radiator. Anybody done this?
>
> 2) What's the consensus on sealant for the sump gasket? I do have a new
> paper gasket, and am leaning toward a silicone sealant, spread thin, and
> letting it get tacky before assembly.
>
> Thanks
>
> Ted Stevens
> stevens@erols.com
> 74 TR6
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