may be that special bolt is supposed to be a banjo bolt? Not that I know
anything about 4's...
Gernot
> ----------
> From: ArthurK101@aol.com[SMTP:ArthurK101@aol.com]
> Reply To: ArthurK101@aol.com
> Sent: Thursday, November 26, 1998 7:16 PM
> To: wdaehler@execpc.com; triumphs@autox.team.net
> Subject: Re: TR4: Oil pressure feed pipe & tatooed stud
>
>
> In a message dated 98-11-25 23:07:09 EST, wdaehler@execpc.com writes:
>
> > I can't believe this is the right stud. It looks like a normal 5/16 th
> > stud with fine thread on one end and course on the other. I threaded
> it
> > into the block. How is the pressure of engine oil supposed to slip out
> > to the ring on the oil feed hose? Osmosis? Telepathy? This stud is
> > way too short anyway. By the time all the hardware is assembled, there
> > is nothing left for the acorn to grab onto.
> >
> > The Moss TR4 catalog is no help. Every piece of hardware is listed and
> > available, except this stud. Balloon #39 is missing. That the part I
> > need. Missing for a good reason I bet.
> >
> > The stud I would expect to see would be a specialized one. Machined in
> > some way. Like hollowed out, or slotted, drilled, turned or milled.
> > Or in some way tatooed.
> >
> > Can anyone help?
> >
>
> According to the Haynes manual:
> "... 2. Fit a new filter head gasket having first inserted the four
> retaining
> bolts. Note that they are of different lengths, the longer one being
> fitted
> to the top right and bottom right hand sides (photo).
>
> 3. The bolt on the bottom left is hollow and also secures the oil pressure
> gauge pressure pipe union. Assemble the union to the bolt with fiber
> washers
> on either side of the union and fit to the filter head.
>
> 4. With the four bolts with spring washers in position tighten the bolts
> in a
> diagonal manner.
>
> 5. On some engines a special stud was fitted instead of the bolt, in which
> case the pressure pipe was connected to the filter head instead." [The
> only
> picture shows the four bolt configuration.]
>
> I just checked my TR4 CT 33118L. It appears to have a bolt fitted. My
> car is
> rather late in the run and my workshop manual (which shows a stud) is an
> early
> edition. Maybe Triumph changed from the stud to a hollow bolt. A
> drawing in
> the factory workshop manual shows a stud, 2 fiber washers and a cap nut.
> It
> also shows that the oil pressure line has a circular end (the "union"
> mentioned above) which fits over the stud. So you have the filter
> mounting
> with the stud protruding, - a washer is fitted over the stud, then the end
> of
> the oil pressure line, then another washer, then the cap nut. No
> explanation
> is given about the stud. But you are right - if the factory workshop is
> correct then the stud would have to let the oil pressure out to the union
> (and
> maybe be sealed by the washers) for the pressure to go to the pipe through
> the
> union. OTOH - Haynes says ("5" above) that the pipe should be fitted to
> the
> filter head if the stud is there. Haynes could means that the washers
> will
> seal oil from leaking and still let the pressure into the union. So it
> says
> fit it to the filter head because that's where the stud is.
>
> HANG ON -- The factory parts catalogue diagram of the oil filter
> arrangement
> shows three bolts (same as Moss and VB catalogues) BUT on another engine
> page (with the same diagram as the Moss catalogue - that's where Moss got
> their "external engine" diagram) it does list the stud (which you refered
> to
> as #39 in Moss and which is unmarked there) as "oil filter (pressure
> attachment) #112170. This is probably the "special stud" which Haynes
> mentions. Since you apparently have the "special stud" why not call TRF
> with
> the part number above (112170), see if they have it and if it is like
> yours.
> If you buy it get all the other parts mentioned above i.e. the washers
> (114033
> &114034) and the cap nut(DN3408). Sorry I can't be of more help.
>
> Any more questions, I'll try my best to help further. Cheers.
>
> Art Kelly
>
|