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Author Topic: Oil Galley Bolt Leaking OIL....help?  (Read 2569 times)

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Offline BucNastyflo

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Oil Galley Bolt Leaking OIL....help?
« on: August 02, 2012, 05:08:20 PM »
I've been obtaining a wealth of knowledge from this forum while working on my CB750 K8. Unfortunately my first post is for a problem...

I bought this bike with 3880 original miles on it. Sat in an aviation hangar for most of its life. Torque bolts still have yellow paint and all the original stickers are on it. I have changed out all fluids and have been riding it regularly with no issues. UNTIL...

Today I fired it up and walked over to right side of bike and noticed oil dripping rapidly out of the bolt where people put there oil pressure gauges. I immediately turned the bike off and then slowly unscrewed the bolt which was on tight. Oil came running out so I screwed it back in quickly. I noticed the back of the bolt had a black o-ring on it...

Does anyone have any idea what may be causing it? I'm hoping you guys say its just a new O-ring, but fearful it could be something much worse. Any help would be appreciated.

Thanks
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Offline CycleRanger

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #1 on: August 02, 2012, 05:16:44 PM »
There's probably a lot of o-rings that will need replacing.  :)
Including a few in the oil pump.
Fortunately they're cheap.
Can you post some more pictures off the bike? It looks pretty clean.
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Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline BucNastyflo

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #2 on: August 02, 2012, 05:54:13 PM »
Thanks for the reply!

Do you think this problem is indicative of the oil pump or where you saying they should be replaced anyway? What is that bolt/plug called? I can't seem to find anyone on the net who has had a leak from that bolt...

Yes I will post some pictures later... front end is off right now but I've spent about 5 days detailing, cleaning, polishing, etc...
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Offline Bob Wessner

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #3 on: August 02, 2012, 06:19:56 PM »
It is cap that seals the oil gallery. Many, myself included,  remove and replace it with an oil pressure guage.
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Offline madmtnmotors

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #4 on: August 02, 2012, 06:25:04 PM »
A new o-ring should correct the problem. The fact that oil is being pushed out this oil galley fitting is a pretty good indicator that the pump is pumping well.
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TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline Dimitri13

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #5 on: August 02, 2012, 06:27:28 PM »
I have leaks from 2 of my 4 oil passage bolts/cap.

What size wrench did you use to undo it? I couldn't get a metric or SAE to fit on there snugly, and an adjustable wrench I couldn't get enough bite.
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Offline BucNastyflo

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #6 on: August 02, 2012, 06:29:49 PM »
The oil pressure gauges look cool, but I need to put my money into other places on the bike first..  :-\

Any idea where I would find a place to order the O-Ring? I looked on Bike Bandit but I could not find the gallery cap..  :-[
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Offline madmtnmotors

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #7 on: August 02, 2012, 06:36:04 PM »
You can buy them right from Honda. Try your local dealer, or online many here use Western Hills Honda or Service Honda ( http://www.servicehondapsn.com/fiche_select.asp )
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TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline Duke McDukiedook

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #8 on: August 02, 2012, 06:44:13 PM »
I think you will need to replace 2 or three of those, the one on the side, another on the bottom of the oil pan and probably one other I missed.
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Offline BucNastyflo

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #9 on: August 02, 2012, 07:27:06 PM »
thanks for the link to the parts fiche...

If I'm reading it correctly its part number 24 under the crankcase section...

Can anyone more skilled than myself in reading these confirm I have the correct O-Ring?

I tried posting a direect link but It wouldnt let me...
I used madmtnmotors link to find the fiche..
« Last Edit: August 02, 2012, 07:39:22 PM by BucNastyflo »
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Offline CycleRanger

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Re: Oil Galley Bolt Leaking OIL....help?
« Reply #10 on: August 02, 2012, 07:46:41 PM »

O-RING (19.4X2.8 )
94608-40000
:)
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Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T
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