Tappets adjustment


Information and questions on GL1000 Goldwings (1975-1979)
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mervk
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1986 1200 SEI and Trigg Trike kit.
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Tappets adjustment

Post by mervk »



Hi all, want to check the tappets on my 75 GL1000, but cannot remove the cover from the alternator so I can turn the motor. The nut is rounded to the point that I think I might need to resort to a hammer and cold chisel. I hope I am right in the nut I am trying to undo. There is a small cast tube with a rubber plug sealing it, in the way to get a ring spanner on to it, however I ground the one shown in the pic narrow enough to fit thru the gap, and it simply slips around the nut. Firm in the tightening direction, but not in the undoing direction. Is there any other method the turn the engine to allow setting the tappets? Or any other ideas from anyone? All comments gratefully received. Cheers, Merv.
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Rambozo
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Re: Tappets adjustment

Post by Rambozo »

That tube is for the kick start lever, which you could use to turn the engine. Another way is the front crank bolt, or put it in gear and turn the rear wheel. Lots of options.
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mervk
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Motorcycle: 1985 GL1200 LTD
1986 1200 SEI and Trigg Trike kit.
1993 'Black Beauty' 1500 SE and chair.
1993 GL1500 Trike.
+ about 20 bikes from 1914 to current.
Contact:

Re: Tappets adjustment

Post by mervk »

So are you saying that if I insert a bar into that tube (I don't have a kick start lever) and push it downwards, that will be the same as the kick start, and turn the motor? I understood the kick start lever attached on the RH side from reading the net.
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mervk
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Motorcycle: 1985 GL1200 LTD
1986 1200 SEI and Trigg Trike kit.
1993 'Black Beauty' 1500 SE and chair.
1993 GL1500 Trike.
+ about 20 bikes from 1914 to current.
Contact:

Re: Tappets adjustment

Post by mervk »

Not sure turning the rear wheel is practical when on my own, and reaching the front crank bolt is a lot of work. But kick start will work for me.
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mervk
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Motorcycle: 1985 GL1200 LTD
1986 1200 SEI and Trigg Trike kit.
1993 'Black Beauty' 1500 SE and chair.
1993 GL1500 Trike.
+ about 20 bikes from 1914 to current.
Contact:

Re: Tappets adjustment

Post by mervk »

Yes, thank you., just googled up a pic of the kick start. I wasn't game to fiddle with that tube cause I didn't know what it was. Now I know, perhaps I can move it out of the way and get a decent spanner on that nut. Thanks heaps for your reply. Cheers, Merv.
PS. Might add, I am new to this model Wing.
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Re: Tappets adjustment

Post by Rambozo »

Since it looks like you saw the Randakks page, you know where the kick start lever should be?


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mervk
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Motorcycle: 1985 GL1200 LTD
1986 1200 SEI and Trigg Trike kit.
1993 'Black Beauty' 1500 SE and chair.
1993 GL1500 Trike.
+ about 20 bikes from 1914 to current.
Contact:

Re: Tappets adjustment

Post by mervk »

Yes thanks. Been over the bike a bit, replaced radiator hoses, thermostat, some wiring plus changed the forks and new head stem bearings. But as I don't have a kick start lever, I hadn't paid a lot of attention to where it fitted. Still a couple of minor electrical problems to sort out but I will sort them in due course. Carbys need balancing. But it goes well enough now to be usable. Just like to check valves for peace of mind.
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mervk
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Joined: Mon Jul 25, 2011 3:51 am
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Motorcycle: 1985 GL1200 LTD
1986 1200 SEI and Trigg Trike kit.
1993 'Black Beauty' 1500 SE and chair.
1993 GL1500 Trike.
+ about 20 bikes from 1914 to current.
Contact:

Re: Tappets adjustment

Post by mervk »

Would love to find some detail on the kick start lever, measurements etc so I can make one. Searched the forum and net without luck.
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Rambozo
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Re: Tappets adjustment

Post by Rambozo »

There are some pricey ones on ebay if you want an original. If you do a Google image search you can find a bunch of pictures. That along with measurements taken from the mounting points on the bike should let you bend up something close.
Here is the rubber strap.
https://www.ebay.com/itm/295916194389
The rubber cover is still available from Honda. 28311-329-000
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cfairweather
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Re: Tappets adjustment

Post by cfairweather »

Try using a long 3/8 inch socket extension bar. The female end on mine fits perfectly. You can attach a couple of these to increase leverage. The cover you are trying to remove is the same as a CB750 tappet cover or the one that covers the GL1000 differential lube hole. You should only use a six point wrench or socket to remove this or it will strip out. It does not need to be very tight. You have already damaged it beyond repair, so you can use a large pair of plyers or other method to get it off. Try heating the cover with a heat gun before turning it. You can get a new one on eBay. If you decide to use the bolt underneath the cover, only turn it clockwise or it may loosen, which is bad. If this happens, put the bike in gear while another person holds the bike and tighten it again.
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mervk
Posts: 107
Joined: Mon Jul 25, 2011 3:51 am
Location: Australia
Motorcycle: 1985 GL1200 LTD
1986 1200 SEI and Trigg Trike kit.
1993 'Black Beauty' 1500 SE and chair.
1993 GL1500 Trike.
+ about 20 bikes from 1914 to current.
Contact:

Re: Tappets adjustment

Post by mervk »

Thanks, didn't damage it beyond repair. Was like that already. This is a new bike to me. Have successfully used an extension bar and checked the tappets. Only problem I had was the kick start socket jams when retracted. Lots of swearing, pressure and wriggling would get it down to the first engagement with the gear, and as long as I used a large rubber band to hold it down against the pressure of the return spring while not turning the motor, I was full steam ahead. I'll address that problem along with the rounded nut when and if I ever need to pull the motor. Thanks for the help.
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Re: Tappets adjustment

Post by cfairweather »

I understand. Since this bike is new to you, you need to replace the timing belts unless you know for sure they are fairly new. Like less than 5000 miles old and less than 5 years or you will be risking your engine. These belts break without warning and you cannot tell by looking at them if they are ok. I personally would not trust them at all after 10 years or 10,000 miles. When they break, your pistons and/or your valves will be damaged.
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mervk
Posts: 107
Joined: Mon Jul 25, 2011 3:51 am
Location: Australia
Motorcycle: 1985 GL1200 LTD
1986 1200 SEI and Trigg Trike kit.
1993 'Black Beauty' 1500 SE and chair.
1993 GL1500 Trike.
+ about 20 bikes from 1914 to current.
Contact:

Re: Tappets adjustment

Post by mervk »

Yes, done a couple in the past on 1200's. But this bike has a new belt. Thx.
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Winger1957
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Re: Tappets adjustment

Post by Winger1957 »

cfairweather wrote: Thu Oct 12, 2023 11:33 pm I understand. Since this bike is new to you, you need to replace the timing belts unless you know for sure they are fairly new. Like less than 5000 miles old and less than 5 years or you will be risking your engine. These belts break without warning and you cannot tell by looking at them if they are ok. I personally would not trust them at all after 10 years or 10,000 miles. When they break, your pistons and/or your valves will be damaged.
This is going to sound like blasphemy, but I put a new Gates belt on my 78 GL in October of 2020 and 25,000+ miles later I routinely take a regular 120 mile ride on Saturday or Sunday, running around 5000 RPM in 4th and 5th gear, and that belt still looks very good. That said, I will put a new one this coming weekend and just ordered another from Amazon.

The belt is Gates T274 Premium Automotive Timing Belt, $25. Old age is for sure a rubber killer. I have been buying the old Yokohama tires being marked by a Korean company and renamed to something else, and although the traction is good, I see a crack down the center of my front tire which should not be there. Its only one year old. Last summer my previous front had the tread separate from the carcass of the tire. I could hear an odd sound coming from the front of my bike, so I slowed down and pulled over and drove on the shoulder for about 30 feet and presto! I could see the bubble of the tread section in TWO places. A blowout was staring me right in the face.

I did turn around and ride back home, albeit slowly with people honking at me and flipping me off. I was on the shoulder. Anyway, next tires will be considerably more expensive.

Belts are exponentially better than they were in 1976. Oil is, too. The cheapest Walmart oil is better than the very best oil sold by Honda in 1976. I have run Mobile T1 Racing Oil in my GL, and my engine spun up noticeably faster, but I went back to Castrol High Mileage Synthetic and a 10,000 mile filter because I think it will dampen internal impact (bearings, gears, primary drive chain) a little better than the T1.

For those who do not know, ethanol free gas is the ONLY gas you want in your GL. Sweet, sweeet performance. Throw in 2 ounces of Marvel Mystery Oil (MMO) for every five gallons of fuel and you have the magic. Remember - always ethanol free and always MMO. Once a quarter - Seafoam into three full tanks should suffice. Check your tire pressure every ride. When you change your front fork seals, make damn sure you take a photo of which side is UP on the seals before you remove them. If you put a seal in upside down, all that nice fork oil will squirt out all over your snazzy motorcycle pants. Oh, and braided steel brake hoses. I like rubber in the back and steel in front. New rubber. Old rubber will die on you and maybe you die with it.


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