Author Topic: Drain tube  (Read 476 times)

Offline Athame57

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Drain tube
« on: September 11, 2018, 03:20:54 AM »
I'm about to fit the oil drain tube I've acquired that goes into breather collector box that goes under the air box.  It came with a sponge in the wide end, I'm not sure this stays in or is just part of the packaging....ding dong ...?
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Online Nurse Julie

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Re: Drain tube
« Reply #1 on: September 11, 2018, 09:04:21 AM »
Its just packaging, when you take it out can you send it to me as mine is missing  ;D ;D ;D ONLY JOKING....leave it in, it's a moisture trap.
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Offline Athame57

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Re: Drain tube
« Reply #2 on: September 11, 2018, 09:48:13 AM »
Thanks Julie...you're a gold mine of info!!
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Offline paul G

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Re: Drain tube
« Reply #3 on: September 11, 2018, 01:00:39 PM »
Its just packaging, when you take it out can you send it to me as mine is missing  ;D ;D ;D ONLY JOKING....leave it in, it's a moisture trap.
;D ;D ;D
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Offline K2-K6

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Re: Drain tube
« Reply #4 on: September 11, 2018, 05:17:36 PM »
 :)

Made me laugh too.

Offline taysidedragon

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Re: Drain tube
« Reply #5 on: September 11, 2018, 08:25:13 PM »
Its just packaging, when you take it out can you send it to me as mine is missing  ;D ;D ;D ONLY JOKING....leave it in, it's a moisture trap.

Which end should it be in? (feeling nervous asking that of a nurse!)
Is it an alternative to the trap at the bottom end?  :o
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Online Nurse Julie

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Re: Drain tube
« Reply #6 on: September 11, 2018, 09:06:48 PM »
Its just packaging, when you take it out can you send it to me as mine is missing  ;D ;D ;D ONLY JOKING....leave it in, it's a moisture trap.

Which end should it be in? (feeling nervous asking that of a nurse!)
Is it an alternative to the trap at the bottom end?  :o
Trust me, I'm a Nurse, I would never advocate sticking something in the wrong end 😀😀 If I remember correctly, originally the tube fitted to the bottom of the air box had an end with a slash cut when the bike was serviced, the end of the tube was squeezed which let out any moisture that had built up. These days, I don't think the slash tube style tube is available any more so as an alternative they supply a pipe that was fitted to the bottom of  the expansion box as an alternative, which has foam inside the wider part at the top. But,you have to take it off to squeeze the foam, so a bit difficult really.
« Last Edit: September 11, 2018, 09:11:27 PM by Nurse Julie »
Im a Nurse, trust me, this won't hurt.....much !!!

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Offline taysidedragon

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Re: Drain tube
« Reply #7 on: September 11, 2018, 11:24:24 PM »
Its just packaging, when you take it out can you send it to me as mine is missing  ;D ;D ;D ONLY JOKING....leave it in, it's a moisture trap.

Which end should it be in? (feeling nervous asking that of a nurse!)
Is it an alternative to the trap at the bottom end?  :o
Trust me, I'm a Nurse, I would never advocate sticking something in the wrong end 😀😀 If I remember correctly, originally the tube fitted to the bottom of the air box had an end with a slash cut when the bike was serviced, the end of the tube was squeezed which let out any moisture that had built up. These days, I don't think the slash tube style tube is available any more so as an alternative they supply a pipe that was fitted to the bottom of  the expansion box as an alternative, which has foam inside the wider part at the top. But,you have to take it off to squeeze the foam, so a bit difficult really.

So a push fit plastic plug which can be removed to let moisture out instead would be ok?
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Online Nurse Julie

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Re: Drain tube
« Reply #8 on: September 11, 2018, 11:37:54 PM »
Its just packaging, when you take it out can you send it to me as mine is missing  ;D ;D ;D ONLY JOKING....leave it in, it's a moisture trap.

Which end should it be in? (feeling nervous asking that of a nurse!)
Is it an alternative to the trap at the bottom end?  :o
Trust me, I'm a Nurse, I would never advocate sticking something in the wrong end 😀😀 If I remember correctly, originally the tube fitted to the bottom of the air box had an end with a slash cut when the bike was serviced, the end of the tube was squeezed which let out any moisture that had built up. These days, I don't think the slash tube style tube is available any more so as an alternative they supply a pipe that was fitted to the bottom of  the expansion box as an alternative, which has foam inside the wider part at the top. But,you have to take it off to squeeze the foam, so a bit difficult really.

So a push fit plastic plug which can be removed to let moisture out instead would be ok?
No reason why not, its not as if by plugging the hole, pressure is going to build up or anything like that. I suppose in reality, it wouldn't matter at all if nothing was fitted, it is only a drain at the end of the day. I suppose the foam originally stopped road dirt going up the tube.
Im a Nurse, trust me, this won't hurt.....much !!!

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Offline taysidedragon

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Re: Drain tube
« Reply #9 on: September 11, 2018, 11:56:00 PM »
I don't want to leave it open in case water spray and road dirt get sucked up inside.  :(
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Offline Laverda120

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Re: Drain tube
« Reply #10 on: September 13, 2018, 05:57:47 PM »
I remember my original 400/4 back in the late, late 70's had a thin piece of foam fitted between the two gauze plates in the base of the air filter housing? Is this an additional piece of foam to do the same job of keeping moisture out?

Offline Athame57

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Re: Drain tube
« Reply #11 on: September 13, 2018, 06:09:38 PM »
Laverda....I tried very hard to get it but it isn't out there anymore. The US forum advised me to plain cut out a a piece of scotch brite and so I did.
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Online Nurse Julie

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Re: Drain tube
« Reply #12 on: September 13, 2018, 06:47:28 PM »
I remember my original 400/4 back in the late, late 70's had a thin piece of foam fitted between the two gauze plates in the base of the air filter housing? Is this an additional piece of foam to do the same job of keeping moisture out?
The peice of gauze in the panching plate, I think that's how you spell it, filters the oil from the engine blow by gases and recycles them through the carbs. I use the foam part of a kitchen sponge, always have done.
« Last Edit: September 13, 2018, 06:52:51 PM by Nurse Julie »
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline K2-K6

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Re: Drain tube
« Reply #13 on: September 13, 2018, 06:48:24 PM »
I don't know if it's the same function,  but some of the bikes a little later used a clear tube with a bung in the end of it.
At service interval you'd inspect for fluid and drain as appropriate,  it looks like it's to stop fluid exiting in front of the rear wheel,  or to stop it dripping and so look like a brit bike had been parked there if stationary  ;D

Offline petermigreen

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Re: Drain tube
« Reply #14 on: September 13, 2018, 06:56:10 PM »

The peice of gauze in the panching plate, I think that's how you spell it, filters the oil from the engine blow by gases and recycles them through the carbs. I use the foam part of a kitchen sponge, always have done.

So do I, cos Julie told me to! :o
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