Tachometer drive housing?


Information and questions on GL1000 Goldwings (1975-1979)
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offcenter
Posts: 956
Joined: Sat Sep 22, 2012 2:10 pm
Location: Lake Hopatcong, New Jersey
Motorcycle: 99 Gl-1500 SE
76 GL-1000
77 Honda Trail 90

Tachometer drive housing?

Post by offcenter »



Hey Guys, just took the fuel pump off my 76 GL-1000.
There is motor oil inside of the housing where the tachometer cable
attaches, just below the fuel pump.
Should there BE motor oil in there??
I was under the impression that the tachometer worm drive needed to
be greased because it wasn't lubed by the engine oil.
Am I wrong? Is the tach drive worm gear lubed by
engine oil?
Thanks guys.


George in Jersey.
99 Goldwing GL-1500 SE
76 Goldwing Gl-1000
77 Honda CT-90 "Trail 90"
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Fred Camper
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Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: Tachometer drive housing?

Post by Fred Camper »

seem that the seal may be bad. The engine does not lube that cable.
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offcenter
Posts: 956
Joined: Sat Sep 22, 2012 2:10 pm
Location: Lake Hopatcong, New Jersey
Motorcycle: 99 Gl-1500 SE
76 GL-1000
77 Honda Trail 90

Re: Tachometer drive housing?

Post by offcenter »

Nuts!
Ok, can someone tell me where I can buy that seal on the back of the right cylinder head/camshaft,
and give some info on how to replace it?
Thanks guys.
George in Jersey.
99 Goldwing GL-1500 SE
76 Goldwing Gl-1000
77 Honda CT-90 "Trail 90"
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SnoBrdr
Posts: 784
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

131K Original Owner

Re: Tachometer drive housing?

Post by SnoBrdr »

offcenter wrote:Nuts!
Ok, can someone tell me where I can buy that seal on the back of the right cylinder head/camshaft,
and give some info on how to replace it?
Thanks guys.
If it's the oil seal on the tack cable, it should still be available from Honda.

91256-096-651 OIL SEAL (4.8X14.5X4) about $4
sfruechte
Posts: 219
Joined: Tue Mar 09, 2010 12:53 pm
Location: La Crosse, WI
Motorcycle: 1977 GL1000

Re: Tachometer drive housing?

Post by sfruechte »

And easy to change, it should just come out with a small pick or screwdriver and the new one just press in, maybe with a small socket.
innisa@gmail.com
Posts: 3
Joined: Wed Jul 03, 2019 12:25 pm
Location: Edmonton, Alberta, Canada
Motorcycle: 1982 GL1100A Aspencade
1978 GL1000

Re: Tachometer drive housing?

Post by innisa@gmail.com »

I also had oil leaking from my tach housing on my 1978 GL1000


. I will replace the the cover insulator (12390-371-405) and the fuel pump insulator (16701-634-000) but I am unsure that this will keep the oil from the camshaft out of the tach housing. There is a rear oil seal 27x43x9 (91209-371-003)


shown as 16 on the diagram on front and back in the left side but only in the front on the right side. I am unsure if there is anything to be installers as I cannot find any information.
Should the tach gears be lubes with anything?
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cfairweather
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Motorcycle: 1975 GL1000, 1976 GL1000, 2013 BMW R1200RT, two restored 1971 K1 CB750s, 2019 Triumph Speed Twin
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Re: Tachometer drive housing?

Post by cfairweather »

It is normal for oil to enter the tach drive housing and there is no seal on that end of the camshaft.


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