Rebuild the Timing Belt Tensioner - $20

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sandiegobrass
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Re: Rebuild the Timing Belt Tensioner - $20

#31

Post by sandiegobrass »

Great... (the Hyundai bearing is the 42015, my favorite of the two I found)
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Re: Rebuild the Timing Belt Tensioner - $20

#32

Post by rcmatt007 »

sandiegobrass wrote:Great... (the Hyundai bearing is the 42015, my favorite of the two I found)
nice to see you back on the ngw site!
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bladredhead
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Re: Rebuild the Timing Belt Tensioner - $20

#33

Post by bladredhead »

for anyone else looking for a good combination of price and convenient, http://www.rockauto.com has a good price on the t42015 bearings*. about half the price of Oriely's website. they're also a good source for timing belts. also search google for "rock auto discount", i found one on http://www.retailmenot.com for 5% off

be sure to click on the "part number search" tab or you won't get any results. the default is a search by car
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Re: Rebuild the Timing Belt Tensioner - $20

#34

Post by 11bolts »

I just rebuilt my tensioners, and Briang is on to a great idea. He said:
Since I had to make bushings to reduce the size of the hole in the backing plate so the 10mm wheel stud could be used, I reasoned that if one were to first cut off the shaft which carries the tensioner roller this leaves, in place, the material which can become the required bushing, already pressed into the backing plate. There is enough of a gap between the plate and the roller to fit a hacksaw blade down it.
This is what I did. It was super easy, and when you've finished cutting, the piece of the shaft remaining in the backing plate already has a hole in it that's exactly the right size to act as a bushing for an M10 bolt - no drilling required.

I used a regular hex head bolt, so I didn't have to worry about drilling the bearing.
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Re: Rebuild the Timing Belt Tensioner - $20

#35

Post by badorderbob »

I did this same Tensioner Conversion back in 09. I needed to take the radiator off today, so I pulled the timing belt covers to check on the Tensioners and found NO WEAR or any debris!! dancr I took some pictures to show you my find!!! Enjoy, type1 Bob
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Re: Rebuild the Timing Belt Tensioner - $20

#36

Post by plippo »

badorderbob wrote:I did this same Tensioner Conversion back in 09. I needed to take the radiator off today, so I pulled the timing belt covers to check on the Tensioners and found NO WEAR or any debris!! dancr I took some pictures to show you my find!!! Enjoy, type1 Bob

was studying this procedure...basically either you remvoe the ehat shields or you drill them?
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Work in progress: GL1000'77 , a 76 LTD and another 75 being restored, a 76 750 four frame up ready to re assemble.
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Re: Rebuild the Timing Belt Tensioner - $20

#37

Post by WShie »

I think the heat shields were only used on some years, they were not on my 79. This is a great fix, no problems on my bike since it was done.
Bill
1979 GL1000- On the road again after 19 years
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Re: Rebuild the Timing Belt Tensioner - $20

#38

Post by plippo »

ok ordered the T42015 and got the wheel studs...I will try to document the procedure....
Fil, Italian but now in the US..
Work in progress: GL1000'77 , a 76 LTD and another 75 being restored, a 76 750 four frame up ready to re assemble.
Riding a CB750 '72 and a blue GL1000 75 ;-)
left home in Europe: Blue 76 for sale, Red 77 (now sold), Black 78.
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Re: Rebuild the Timing Belt Tensioner - $20

#39

Post by plippo »

i studied a bit the matter, and I think the best would be to fabricate a special stud with a lathe... here the drawing...

what do you guys think? this would allow to still use the heatshields...

Image
Fil, Italian but now in the US..
Work in progress: GL1000'77 , a 76 LTD and another 75 being restored, a 76 750 four frame up ready to re assemble.
Riding a CB750 '72 and a blue GL1000 75 ;-)
left home in Europe: Blue 76 for sale, Red 77 (now sold), Black 78.
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Re: Rebuild the Timing Belt Tensioner - $20

#40

Post by WShie »

if you have access to a lathe that would work great.
Bill
1979 GL1000- On the road again after 19 years
1980 GS1000G Current Moneypit.. er project
1976 KZ400- Winter Project
Gone but not forgotten:
1941 Matchless 350
1956 BSA Golden Flash
1956 Triumph 650
1977 Moto Guzzi 850T
1979 Yamaha XS1100
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Re: Rebuild the Timing Belt Tensioner - $20

#41

Post by plippo »

Guys, I have now completed by tensioner rebuild pls check this document where i collected the pictures and the procedure for future reference:


https://docs.google.com/open?id=0B8-aFV ... Th3X0k5dEE
Fil, Italian but now in the US..
Work in progress: GL1000'77 , a 76 LTD and another 75 being restored, a 76 750 four frame up ready to re assemble.
Riding a CB750 '72 and a blue GL1000 75 ;-)
left home in Europe: Blue 76 for sale, Red 77 (now sold), Black 78.
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gltriker
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Re: Rebuild the Timing Belt Tensioner - $20

#42

Post by gltriker »

Here's my method: http://www.ngwclub.com/forum/viewtopic. ... &start=255

see post #259
DSCN1346 1.jpg
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gltriker
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Re: Rebuild the Timing Belt Tensioner - $20

#43

Post by gltriker »

The VERY BEST documentation, by bottona, is found here:

viewtopic.php?f=1&t=63481&p=702365#p702323
Cliff (74yrs ;) )

Keep your eyes and ears open and you'll learn something new, everyday. tumb2

New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^ :oldies

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi tumb2
"Can't see the paint when your looking thru the handlebars..........." -Oldewing ;)
"I'd rather Ride than Shine" -RAT tumb2 Me Too!!

Cliff

'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM :shock: https://nakedgoldwingsclub.com/forum/page/Welcome

previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
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Re: Rebuild the Timing Belt Tensioner - $20

#44

Post by Don R »

I did the timing tensioner rebuild also. I used the 10 mm wheel studs. I measured the small OD of the stud behind the splines and drilled from the back of the plate far enough to make it easier to saw the stud off.

https://photos.app.goo.gl/hmHCeMBbwircdqbr2

Next I sanded the plate flat and used a stack of washers and a nut to pull the stud into the plate. The splines stick far enough through the plate to center the bearing. The back of the stud didn't cover the entirety of the old stud attachment that some guys punch out. Since I wanted to retain the backing plates, and rather than use a washer on the back I tack welded the studs in two places. Next I notched the backing plates to fit around the studs. I slid the bearings on and retained them with a lock washer, nut and plenty of red locktite.


https://photos.app.goo.gl/nRlq73sSsDqb6cAG2

The parts I used from Rock Auto where I also got the belts last year. I was hearing a noise like an old cheap roller skate wheel and the bearings didn't feel smooth like they did last year. I'm thinking it was about $30.

https://photos.app.goo.gl/ANAZxrjrbaLOTkvq1

I drained the coolant, removed the radiator hose fitting at the engine, loosened the radiator and the right crash bar swung them both out of the way without removing either.

My 78 or 79 didn't have the heat shields just a 3 hole L shaped backing bracket that I mentioned. I assume it ties the 3 bolt bosses together to dampen vibrations from the belts.
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Rednaxs60
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Re: Rebuild the Timing Belt Tensioner - $20

#45

Post by Rednaxs60 »

Did this back in Jan of 2016. Instead of grinding the old bearing off used a hacksaw to cut it off, faster and less messy. Used a M10x1.5x25 mm 10.9 GR Bolt (2) (countersunk head) for the new tensioner - with associated nylock nut. Removed all the old install:
Base Plate countersink.jpg
Base Plate countersink.jpg (138.61 KiB) Viewed 903 times
The new parts were:
Old and new parts.jpg
Old and new parts.jpg (126.71 KiB) Viewed 903 times
The countersunk bolt stuck out a bit so I used a hacksaw and file to trim - lots of meat left on the bolt head in case bearing has to be changed:
New idler installed on base plate.jpg
New idler installed on base plate.jpg (134.33 KiB) Viewed 903 times
Bolt trimmed to base plate - 1.jpg
Bolt trimmed to base plate - 1.jpg (126.27 KiB) Viewed 903 times
Still working good after two year and 35K Kms.

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