Installing the Motao sump plate oil filter on a T140E -- a few questions - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 20 (permalink) Old 08-11-2019, 02:48 PM Thread Starter
Minitwins
Main Motorcycle: '79 Bonneville
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Installing the Motao sump plate oil filter on a T140E -- a few questions

We're slowly but surely making progress on getting my wife's 1979 Bonny T140E back together. She's doing 99% of the work, I'm just helping with research.

The current project is installing the Motao sump plate filter. It's assembled and bolted up easily after I slightly enlarged the holes on the drill press. And on the advice of @TR7RVMan we used a gasket from BritishOnly, not Motao.

There are a couple of things I could use some help figuring out next though.

First is the oil tube fitting. If you tighten this fitting, the fat o-ring squirms out, which is obviously not right. You can only go finger-tight plus a tiny bit before the o-ring starts to deform. Is that expected? Should I use blue loc-tite to keep this fitting from working loose? If you tighten it to keep the o-ring looking good it just doesn't feel tight enough to be secure. I could be overthinking it though.



The other issue is how to route the oil hose. We have the oil fitting pointing to the back to the back of the bike since that's said to be required for the center stand to fit the new sump plate. But I could really use some pictures to see how the oil hose should be routed and secured.

Many thanks for any assistance you can offer!
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post #2 of 20 (permalink) Old 08-11-2019, 04:31 PM
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Hi Horseflesh
I cannot understand Motao making a very nicely machined filter unit, then supplying this rubbish with it.

That O-ring will never work.

I would think the best way out of your dilemma would be to throw that away an buy a proper seal.

Look up ‘Dowty Seal’ or ‘Stat-o-seal’ and for a few cents you will get a sealing solution that you can be confident won’t leak or come undone in use.

Regards
Peg.
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post #3 of 20 (permalink) Old 08-11-2019, 09:57 PM
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Or go a copper washer and anneal and fit it. Interesting that the original Triumph fitting was a press fit...don't know why they didn't go with that. FWIW I have a Charlie's filter kit fitted, had it for over 20 years and 50,000km with nil issues.

tridentt150v,
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post #4 of 20 (permalink) Old 08-12-2019, 12:42 AM Thread Starter
Minitwins
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Thanks for confirming my suspicions that this o-ring was hot garbage! I don't know beans about bikes, but some of my other hobbies involve o-rings and so this looked like bad news.

I will check out those other options, thanks!
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post #5 of 20 (permalink) Old 08-12-2019, 12:32 PM
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Quote:
Originally Posted by tridentt150v View Post
Or go a copper washer and anneal and fit it. Interesting that the original Triumph fitting was a press fit...don't know why they didn't go with that. FWIW I have a Charlie's filter kit fitted, had it for over 20 years and 50,000km with nil issues.
+1!
Get a new copper washer, heat it until cherry red and drop it into cold water (not part of the process but means you don't have to wait for it to cool). I always do this with engine sump plugs, gearbox drains, differentials etc. Any working of copper hardens it, anealing it de-stresses the metal, softening it again.
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post #6 of 20 (permalink) Old 08-12-2019, 01:45 PM
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Hi Horseflesh, Discard the o-ring. Do not use it! The kits I've been involved with also came with 2 copper ring. Both 1/2". If not go to auto parts store & get a supply of rings. Drain ring is the same. Use copper for both.

Use blue loctitie 242 or 243 on both the oil line fitting & the filter threaded rod into base plate is a good plan. After the oil line fitting is installed look at hex & make sure the corner of hex is below gasket surface. File it down as needed so hex doesn't foul frame bottom.

Before you commit to rear facing line try the plate facing forward & check for center stand clearance.

I have never placed fitting to rear. I don't know the routing, you'll have to figure that out. Some stands don't hit forward, some do. I modify the housing & place fitting forwards.

After installing drain plug, verify magnet doesn't hit the bottom filter adaptor disc. I've had to grind magnet shorter on some. The lower adaptor disc 0-ring has a tendency to pop out as it's not contained. Most discard this ring as it's not really needed.
PM me if you get stuck. I have lots of photos, but none of rear facing oil line.
Don
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post #7 of 20 (permalink) Old 08-13-2019, 12:11 PM Thread Starter
Minitwins
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Got it, @TR7RVMan . Somewhere in my reading I got the idea that the Motao always fit better pointing backwards, we will just try it the easy way before we commit. Thanks for the other tips, that all makes sense. Much appreciated!
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post #8 of 20 (permalink) Old 08-14-2019, 03:11 AM
rbe
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hey horseflesh
i've fitted one to my 76 T140
like you, i had to file out the holes to line up with the studs on the frame
i can't remember, but it looks like i've used the o ring
i've got mine facing forward, this is the first i've heard of the other way
as you'll see in the pics my centrestand hits on the drain plug rather than sitting in the slot
without trying it, i think putting it on the other way, the stand cross bar still wouldnt sit in the slot
as you see mine is leaking oil, i'll have to try the other gasket
hope this helps
rory
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post #9 of 20 (permalink) Old 08-14-2019, 06:06 AM
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I must have either a different main stand or different filter plate...
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post #10 of 20 (permalink) Old 08-15-2019, 12:15 PM Thread Starter
Minitwins
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Thanks much for the pics @rbe & @tribsa1954 . We'll just have to see what happens on ours... Folks have said there are different versions of this kit. Looks like the center stand cross-brace may not be consistent across these bikes too.

Rory do you have any problems with the center stand being a little out of place like that?
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