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Re: Clean the oil tank screen? [Re: TR6Ray] #567258
10/12/14 5:15 am
10/12/14 5:15 am
Joined: Jan 2011
Posts: 172
Pt Augusta, Australia
M
Mossy Offline
BritBike Forum member
Mossy  Offline
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M
Joined: Jan 2011
Posts: 172
Pt Augusta, Australia
Just my 2 bobs worth for interests sake.
I'm like Desco, always remove and clean the screens, never had any trouble.
That's been on a mixture of pre units, a T150V and 81/82 T140E's.
Though I suppose it must have happened occasionally, since that was the reasoning behind the 4 valve oil pumps on the later T140's.

Cheers Mossy


1960 TR6B
1954 based Thunderbird Salt Lake Racer
1979 T140E
1951 6T Thunderbird Project
1981 T140E
1948 Speed Twin project
1976 Bonneville/Tiger Trail replica
2015 Bonneville T100
1949 Excelsior 197 Roadmaster project
1950 Excelsior 250 Talisman project
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Re: Clean the oil tank screen? [Re: Mossy] #567361
10/12/14 6:19 pm
10/12/14 6:19 pm
Joined: Aug 2011
Posts: 416
OZ
O
Old Cafe Racer Offline
BritBike Forum member
Old Cafe Racer  Offline
BritBike Forum member
O
Joined: Aug 2011
Posts: 416
OZ
You only need to have the problem once to become a convert.

davy

Re: Clean the oil tank screen? [Re: Old Cafe Racer] #567362
10/12/14 6:25 pm
10/12/14 6:25 pm
Joined: Nov 2008
Posts: 2,798
Bishop, Calif.
D
desco Online content

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desco  Online Content

BritBike Forum member
D
Joined: Nov 2008
Posts: 2,798
Bishop, Calif.
The only oil problem I've had is that synthetic clogs the pump on the 72, twice. But that's another thread.


1968 T120R
1972 T120RV
Any advice given is without a warranty expressed or implied.
Re: Clean the oil tank screen? [Re: desco] #567370
10/12/14 8:07 pm
10/12/14 8:07 pm
Joined: Aug 2011
Posts: 416
OZ
O
Old Cafe Racer Offline
BritBike Forum member
Old Cafe Racer  Offline
BritBike Forum member
O
Joined: Aug 2011
Posts: 416
OZ
I've been running 15/50 synthetic for 8000km now with no problems... don't see how it can clog anything if it's clean and not mixed with anything else.

davy

Re: Clean the oil tank screen? [Re: TR6Ray] #567445
10/13/14 1:02 pm
10/13/14 1:02 pm
Joined: Mar 2005
Posts: 10,147
Boston, Massachusetts
J
John Healy Offline

BritBike Forum member
John Healy  Offline

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J
Joined: Mar 2005
Posts: 10,147
Boston, Massachusetts
Ones point of view can often be described as looking through a funnel. Some are looking from the wide end focused on an specific event. Others are looking from the narrow end looking at a many events. From which end of the funnel you are looking you can come up with a much different opinion of something like whether you should specifically remove the crankcase drain plug and screen.

If you are anal enough to make sure you carefully clean the area around the plug, and make sure it is spotless, and you don't fumble around trying to put the plug back in the hole, and lucky enough without picking up a speck of dirt, your view of this would be much different than a dealer who has been exposed to the experience of hundreds of owners over a lifetime. In my experience over some 50 years of doing this when we see a pump that has failed because of something under a check ball the answer to, "Did you recently change the oil and remove the sump plug to drain the few ounces of oil in the crankcase?" the answer was almost always, "Yes!". Is this a double-blind scientific test, no, but it certainly leads me to believe there is more than a casual relationship with the behavior of removing the sump plug... just my opinion from looking up the funnel.


Re: Clean the oil tank screen? [Re: John Healy] #567460
10/13/14 2:40 pm
10/13/14 2:40 pm
Joined: Nov 2008
Posts: 2,798
Bishop, Calif.
D
desco Online content

BritBike Forum member
desco  Online Content

BritBike Forum member
D
Joined: Nov 2008
Posts: 2,798
Bishop, Calif.
Cleanliness is next to Godliness. I'm VERY particular about clean.


1968 T120R
1972 T120RV
Any advice given is without a warranty expressed or implied.
Re: Clean the oil tank screen? [Re: TR6Ray] #567482
10/13/14 5:28 pm
10/13/14 5:28 pm
Joined: Jan 2014
Posts: 1,937
South cone
R
reverb Online content
BritBike Forum member
reverb  Online Content
BritBike Forum member
R
Joined: Jan 2014
Posts: 1,937
South cone
...yes; it s all about cleanliness. It s just that and then change the oil in time.
I have a 48 pre unit so the engine parts does not has a perfect fit, etc but when I rebuilt it I triple checked for some debris, etc. Is the best that I can do; because I cannot rely on the manual technical aspect due that the parts have too much wearing.

I drain the oil then clean with kerosene.
If I need to unscrew the sump plate, I clean it with kerosene then thinner to put silicone.

But mine for some reason, that still is a guess (I put a thread here few months ago about it, but I do not found it anymore...)
leaks gobs of oil; in great % for the external oil passages and the other % for that unknown place near the base of the head; so after a long trip, like I did yesterday (800 kms )I need to refill the tank with about a liter!; so sometimes I do not do the oil change (draining the tank), only refilling...
Im very proud of this motorcycle, no matter that big leak, because without any doubt it s one of the few pre units of the 40s (or may be the one)in the world that really keeps on putting kms and more kms in long trips at a strong cruising speed and still kicking.


--hey John Healy, why you do not answer my PM s?
I tried to buy some parts from you...you know, may be it s good to sell parts to a real rider.

Re: Clean the oil tank screen? [Re: reverb] #567484
10/13/14 5:35 pm
10/13/14 5:35 pm
Joined: Nov 2008
Posts: 2,798
Bishop, Calif.
D
desco Online content

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desco  Online Content

BritBike Forum member
D
Joined: Nov 2008
Posts: 2,798
Bishop, Calif.
John does not sell to individuals, only dealers.
Congratulations on keeping one of these old bikes on the road under VERY adverse conditions. Most people would have given up long ago.


1968 T120R
1972 T120RV
Any advice given is without a warranty expressed or implied.
Re: Clean the oil tank screen? [Re: leon bee] #616502
09/08/15 6:56 am
09/08/15 6:56 am
Joined: May 2010
Posts: 2,584
Illinois, USA
TR6Ray Offline OP

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TR6Ray  Offline OP

BritBike Forum member
Joined: May 2010
Posts: 2,584
Illinois, USA
Originally Posted By leon bee
Ray: After reading a post by Gunner in another thread, I got interested and bought one of these. $37 shipped http://www.liquivac.com/models/

Almost a year on from this post, I picked up a LiquiVac based on leon bee's advice. You can order on-line and get free shipping, but I found that Menard's sells these in their big box stores for the same price.

I couldn't get the thing to develop vacuum at first, but the on/off valve just hadn't been pushed fully into place at assembly. After that, it worked very well. Thanks for the tip, leon bee!

Ray


'64 TR6R Plus some Twins from other countries (U.S., Germany, Japan)
Re: Clean the oil tank screen? [Re: TR6Ray] #616605
09/08/15 8:08 pm
09/08/15 8:08 pm
Joined: Nov 2006
Posts: 247
USA, WA state
R
russrudolph Offline
BritBike Forum member
russrudolph  Offline
BritBike Forum member
R
Joined: Nov 2006
Posts: 247
USA, WA state
I had a gmc 8v71 diesel in my boat and oil was sucked out at marina thru a 1/4 copper pipe thru dip stick hole.
On my 4 cylinder small boat gas engine 4.1 . I just use a small bilge pump with 1/4 copper pipe thru dip stick hole. Have engine warm and pump for a few minutes or until pump signals all oil out.
Same on my triumph.

Re: Clean the oil tank screen? [Re: TR6Ray] #616624
09/08/15 9:58 pm
09/08/15 9:58 pm
Joined: Jun 2007
Posts: 5,900
Maui Hawaii
HawaiianTiger Online content
BritBike Forum member
HawaiianTiger  Online Content
BritBike Forum member
Joined: Jun 2007
Posts: 5,900
Maui Hawaii
From time to time, I clean out the oil tank completely. Screen out, lots of solvent until it's perfectly clean.

I know Doc Healy poo poo's removing the sump screen.(a real pain in the ass on a pre unit, by the way, so it doesn't get done very often)

My question is what kind of a hack removes the sump plug from a dirty motor? The under side of a motor is going to be clean clean clean before I get anywhere near it with tools.

No garbage gets in the motor when I remove a sump plug. Just general good wrenching habits, you know.

Cheers,
Bill


Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Flying Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.
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