Author Topic: Generator cover removal  (Read 1016 times)

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Offline 88blkiroc

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Generator cover removal
« on: June 08, 2016, 10:53:12 AM »
I want to swap over the generator cover from my parts bike to my driver. Is there a gasket or anything behind it that I will need?
74 CB750K slowly turning cafeish
74 CB750K parts bike
70 CT70 Trail 70
07 Yamaha PW50 (kids 1st bike)
Former:
01 Shadow Spirit 1100
88 NX125
68 S90 Dream

Offline flybox1

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Re: Generator cover removal
« Reply #1 on: June 08, 2016, 11:36:16 AM »
all the info you seek is on CMSNL.com

'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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"Knowledge without mileage equals bullsh!t" - Henry Rollins

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Offline CycleRanger

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Re: Generator cover removal
« Reply #2 on: June 08, 2016, 11:57:28 AM »
I want to swap over the generator cover from my parts bike to my driver. Is there a gasket or anything behind it that I will need?

There is oil behind it.
You can get the parts list here: http://honda4fun.com/materiale-documentazione-tecnica/parts-list/parts-list-cb750
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 88blkiroc

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Re: Generator cover removal
« Reply #3 on: June 08, 2016, 12:12:15 PM »
Thanks for the info. Im kind of pressed for time and the gasket might not arrive quickly enough if I order it. Have you guys ever used Hondabond or RTV instead of the gasket? I use Permatex Right Stuff often in automotive applications and it works really well.
74 CB750K slowly turning cafeish
74 CB750K parts bike
70 CT70 Trail 70
07 Yamaha PW50 (kids 1st bike)
Former:
01 Shadow Spirit 1100
88 NX125
68 S90 Dream

Offline flybox1

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Re: Generator cover removal
« Reply #4 on: June 08, 2016, 12:18:08 PM »
Call your local Honda dealer, or cut one out of gasket material from the auto store.
Asking for trouble if you goop it up, imo.
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Jonesy

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Re: Generator cover removal
« Reply #5 on: June 08, 2016, 06:02:00 PM »
As long as you clean everything well and use it SPARINGLY a little RTV or HondaBond should be OK (you'll likely need a little dab on the rubber wire seal as it probably isn't as pliable as it used to be).

I say sparingly in caps as the PO of my bike thought it was the best thing since sliced bread- they must have used 2 tubes on my engine. I pulled lots of cured RTV "worms" out of my oil pan.  >:(

There are copper sealing washers behind the 3 field coil mounting bolts, too.
"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen

Offline CycleRanger

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Re: Generator cover removal
« Reply #6 on: June 08, 2016, 06:28:44 PM »
Thanks for the info. I'm kind of pressed for time and the gasket might not arrive quickly enough if I order it. Have you guys ever used Hondabond or RTV instead of the gasket? I use Permatex Right Stuff often in automotive applications and it works really well.
That's not something I would do.
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 Jonesy

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Re: Generator cover removal
« Reply #7 on: June 08, 2016, 06:36:15 PM »
If you decide to cut your own gasket instead, if you have access to a scanner or copier, place the gasket surface of the part on the scanner bed. It will make a pattern for you to copy the gasket from.

(Bob Wessner showed this trick years ago and it is quite handy)
"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen

Offline madmtnmotors

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Re: Generator cover removal
« Reply #8 on: June 09, 2016, 04:20:25 AM »
RTV silicone has a reputation for finding its way up to the oil jets that feed the top end. When these tiny jets get plugged the top end gets roasted. RTV silicone should never be used...

If you don't have time to wait for a gasket, do you have time to rebuild the top end of your motor? This would include replacing the cam and cam cradles, probably the rocker arms too.
« Last Edit: June 09, 2016, 04:22:37 AM by madmtnmotors »
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

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Offline ekpent

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Re: Generator cover removal
« Reply #9 on: June 09, 2016, 05:05:18 AM »
Old gasket may be reusable if your careful. Best to keep the RTV away.

Offline przjohn

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Re: Generator cover removal
« Reply #10 on: June 09, 2016, 02:25:12 PM »
I have used Honda/Yamabond and RTV on many bikes without a problem. Dirt bike riding we used the stuff  all the time, talk about time constraints. When you have 12 hours to get a bike ready it gets gooped up, no screwing around, this bike is moving tomorrow. Never had an engine issue due to a sealant, 2 or 4 stroke. The trick is, as others have stated, to use very little. I like to explain it as string. You only need a little string that could hold a kite, nothing more. If you think you aren't putting enough on, you probably have it right.
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline Jonesy

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Re: Generator cover removal
« Reply #11 on: June 09, 2016, 05:10:36 PM »
I agree it can plug the small oil jets in the valvetrain. However, that's when it's used on the base gasket. If a bit comes off in the crankcase (you don't want it to, but if it does) it will be stopped by the oil pickup strainer or the oil filter.
"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen