/5 oil flow issue

Sun Jul 4 06:36:15 EDT 2021

Hello,

This is the last update on my /5 oil flow issue.

Oil pump spinning on camshaft: https://youtu.be/AvWdLQlvCMQ

Woodruff key missing: https://photos.app.goo.gl/3n8tM8BgbXNPiAVTA

Woodruff key replacement with Elmer's glue:
https://photos.app.goo.gl/ZnM9uZQssCahuDWNA

Oil pump prime and test: https://youtu.be/bs2eNaaPEuU

Thank you everyone.

Craig

On Sat, Jun 19, 2021 at 10:10 AM Craig Barnhart <barney12231963 at gmail.com>
wrote:

> Take Two: https://youtu.be/0OiJpaVJyH0
>
> No Joy.
>
> Note: I forgot to remove (and ground) the spark plugs this time but I had
> the green coil wire off. The battery was strong enough for the test anyway.
>
> It's on YouTube this time so feel free to comment there if you like.
>
> On Fri, Jun 18, 2021 at 4:42 PM Tom Cutter <rubberchickenracing at gmail.com>
> wrote:
>
>> oops, I made a typo! SHOULD SAY " If no joy, you know the pump is NOT
>> working"
>>
>> --
>> Tom Cutter
>> Yardley, PA
>> www.RubberChickenRacingGarage.com
>>
>> "Normalize telling your friends that you love them. Tell them a lot. Make
>> it weird." --unk
>>
>>
>>
>>
>>
>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free.
>> www.avast.com
>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link>
>> <#m_-2010962653816028979_m_3493305825176858612_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>>
>> On Fri, Jun 18, 2021 at 4:00 PM Tom Cutter <rubberchickenracing at gmail.com>
>> wrote:
>>
>>> I’d put it on the centerstand with a 1/2” shim under the right hand leg
>>> of the stand. Hold a pan under the filter cavity, because this test gets
>>> messy if everything is working. If no joy, you know the pump is t working,
>>> probably because the tiny key slipped out. I glue the key in with Elmer’s
>>> glue so it doesn’t fall. The glue dissolves in the hot oil and is harmless.
>>>
>>> Tom Cutter
>>> Rubber Chicken Racing Garage
>>> Yardley, PA USA
>>> RubberChickenRacingGarage.com
>>>
>>> On Jun 18, 2021, at 3:19 PM, Craig Barnhart <barney12231963 at gmail.com>
>>> wrote:
>>>
>>> 
>>> I just got some feedback.
>>>
>>> Someone said I leaned the bike over too much for the pickup to get oil
>>> to the pump.
>>>
>>> If so, should I just put the bike on the side stand and do it again?
>>>
>>> On Fri, Jun 18, 2021 at 2:52 PM Craig Barnhart <barney12231963 at gmail.com>
>>> wrote:
>>>
>>>> Looks like I'll be disassembling from the rear to get to the oil pump.
>>>>
>>>> https://photos.app.goo.gl/STcPCtZkrEEWXM9G6
>>>>
>>>> You can ignore my unedited speech bloopers at the end.
>>>>
>>>> Craig
>>>>
>>>> On Wed, Jun 16, 2021 at 12:39 PM Craig Barnhart <
>>>> barney12231963 at gmail.com> wrote:
>>>>
>>>>> Thank you sir!
>>>>>
>>>>> That's exactly what I wanted, a direction to go.
>>>>>
>>>>> Maybe I'll take a video to determine what "A LOT" means.
>>>>>
>>>>> On Wed, Jun 16, 2021 at 11:45 AM Tom Cutter <
>>>>> rubberchickenracing at gmail.com> wrote:
>>>>>
>>>>>> Craig-
>>>>>>
>>>>>> I use a system called Divide and Conquer. In this case this means
>>>>>> look at the system in parts. To do this first remove the oil filter cover
>>>>>> (bike laid partly over to left) and see if it is full of oil. A tap on the
>>>>>> starter (plugs out/grounded) will tell you if the oil pump is working. If
>>>>>> you don't get a LOT of oil coming out of the pump cavity very fast, (this
>>>>>> will be messy) then the pump is the problem. On a /5 that means the
>>>>>> woodruff key slipped, so you know where you have to go to fix that. VERY
>>>>>> common fault with the /5 which uses that tiny key.
>>>>>>
>>>>>> Check that, report back.
>>>>>>
>>>>>> --
>>>>>> Tom Cutter
>>>>>> Yardley, PA
>>>>>> www.RubberChickenRacingGarage.com
>>>>>>
>>>>>> "Normalize telling your friends that you love them. Tell them a lot.
>>>>>> Make it weird." --unk
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Wed, Jun 16, 2021 at 11:35 AM Craig Barnhart <
>>>>>> barney12231963 at gmail.com> wrote:
>>>>>>
>>>>>>> Greetings Airheads,
>>>>>>>
>>>>>>> I have an oil flow issue on my newly assembled 1972 R50/5 project
>>>>>>> bike, and I'm scratching my head trying to determine the next steps.
>>>>>>>
>>>>>>> This is the first time I ever attempted to start the bike, and I am
>>>>>>> not getting oil from the sump to the cylinder heads, and only a residual
>>>>>>> amount to the oil sensor (oil pressure light stays on).
>>>>>>>
>>>>>>> *Background:*
>>>>>>>
>>>>>>> As part of this three-year (part time) project, I replaced all seals
>>>>>>> including the fuel pump's o-ring and cover, the woodruff key, and visually
>>>>>>> inspected (no measurements) the fuel pump. I also replaced the pickup
>>>>>>> gasket.
>>>>>>>
>>>>>>> *What I've done since the issue, not necessarily in this order:*
>>>>>>>
>>>>>>>    1. Read thru this thread:
>>>>>>>    https://advrider.com/f/threads/airhead-oil-priming-problem-ha.746898/.
>>>>>>>    The *Bill Harris, Dec 5, 2011 *entry is the best summary on the
>>>>>>>    page.
>>>>>>>    2. Studied Snowbum's diagram and notes:
>>>>>>>    https://bmwmotorcycletech.info/oilsketch.htm
>>>>>>>    3. Tested the oil sensor switch.
>>>>>>>    4. Filled the oil filter cavity with oil to prime it (laid the
>>>>>>>    bike on its side to fill--learned this trick from Tom Cutter).
>>>>>>>    5. Hand pumped (as best I could) oil into the oil sensor hole to
>>>>>>>    prime it.
>>>>>>>    6. Visually checked the pickup, bolts, and gasket
>>>>>>>    7. Blew air (with an air compressor) into the pickup and felt
>>>>>>>    air coming out of the right cylinder.
>>>>>>>    8. Blew air into the oil sensor hole.
>>>>>>>    9. Blew air into oil filter cavity holes.
>>>>>>>
>>>>>>> *Outcomes after turning over the engine (spark plugs out; green coil
>>>>>>> wire off) for 90 seconds at a time:*
>>>>>>>
>>>>>>>    1. I got a tiny bit of oil into the left head (right side of the
>>>>>>>    left head) at one point of the process.
>>>>>>>    2. Oil is coming into the oil filter cavity.
>>>>>>>    3. There is residual oil in the oil sensor hole (seeps out when
>>>>>>>    sensor is removed), but it doesn't flow out when turning over.
>>>>>>>
>>>>>>> *AFAIK this is what is left to check:*
>>>>>>>
>>>>>>>    1. Oil pump - Visually inspect again and take measurements this
>>>>>>>    time (remove flywheel, etc.)
>>>>>>>    2. Oil pressure relief valve - Make sure it's not stuck open
>>>>>>>    (remove timing cover)
>>>>>>>    3. Ensure front main bearing cap oil passage hole lines up with
>>>>>>>    engine block hole - Not sure if I can do this visually without removing the
>>>>>>>    main bearing or cap  (remove timing cover)
>>>>>>>    4. Something clogged in the system - I don't know how to check
>>>>>>>    this other than blowing air through it.
>>>>>>>
>>>>>>> *Questions:*
>>>>>>>
>>>>>>>    1. Can I narrow it down to one area before disassembling the
>>>>>>>    rear and/or front end?
>>>>>>>    2. Is there any way to test the system after disassembling
>>>>>>>    besides a visual inspection and measurements?
>>>>>>>    3. I can tow the bike to Chris' tech day if anyone thinks it
>>>>>>>    would help to see it in person. Does anyone think it would be helpful to
>>>>>>>    bring it?
>>>>>>>
>>>>>>> Thank you!
>>>>>>> Craig
>>>>>>>
>>>>>>
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