Author Topic: 400F cam chain tensioner damper fell out.  (Read 374 times)

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Offline jakec

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400F cam chain tensioner damper fell out.
« on: January 02, 2023, 01:21:24 PM »
I'm rebuilding my 400 engine and I was putting the cam shaft in today. I put in the front and rear chain slippers after I got the cam shaft timed. The rear slipper which is part of the tensioner wasn't seating in the horseshoe thing at the bottom. So I was fiddling with it and then checked from the bottom thru the sump which is removed. And I can see the damper rubber has popped out and is sitting crooked and sideways. It's part #51.

Laying on the ground looking thru the sump and fiddling with the slipper I can't get the damper to go back into place in the horseshoe (engine is in frame). And I'm not sure if I can make it fall all the way out either? I think if it fell all the way out then I could use a small dab of glue and put it on the slipper in install it from the top of the engine. But right now I'm stuck.

1970 CB750 K0
1977 CB750 Chop
1997 XR650L

Offline MauiK3

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Re: 400F cam chain tensioner damper fell out.
« Reply #1 on: January 02, 2023, 01:29:16 PM »
Oh boy, I’m not a 400f guy but it seems you don’t have much choice but take it far enough apart to get it in there right. Relying on any adhesive in that environment would be iffy.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline jakec

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Re: 400F cam chain tensioner damper fell out.
« Reply #2 on: January 02, 2023, 02:06:25 PM »
I had forgotten that the part actually has some metal in it (mostly rubber with metal core). So once I remembered that I went and bought a very small magnet on a stick. So it is out of the engine now. As for the super glue, it would only be for keeping the damper attached to the slipper while I lower it into place. After that it will be sandwiched in place and can't go anywhere. I am going to give it a shot now.
1970 CB750 K0
1977 CB750 Chop
1997 XR650L

Offline jakec

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Re: 400F cam chain tensioner damper fell out.
« Reply #3 on: January 02, 2023, 02:27:48 PM »
Superglue worked. All good now. After that experience I'm not sure how I got it together without issue the first time. In the future the glue method seems like a go to to me.
1970 CB750 K0
1977 CB750 Chop
1997 XR650L

Online Tim2005

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Re: 400F cam chain tensioner damper fell out.
« Reply #4 on: January 02, 2023, 04:21:40 PM »
Good idea on the glue, I had a similar problem once & it was mostly luck and a lot of time that resolved it

Offline Kelly E

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Re: 400F cam chain tensioner damper fell out.
« Reply #5 on: January 02, 2023, 04:25:45 PM »
Nice job getting the part out and fixing it. 8)
Never Give Up - Never Surrender

The Rust Bros. Garage Collection
1974 Honda CB 550 K0                                            1971 MGB/GT
1975 Honda CB 400F Super Sport                          1972 MGB/GT
1977 Kawasaki KZ 1000 LTD                                   1985 GMC S15
1978 Kawasaki KL 250
1980 Suzuki GS 1100E
1982 Honda CB 900F Super Sport
1983 Honda CB 1100F
1984 Honda VF 700S Sabre
1984 Honda VF 1000F Interceptor
1990 Moto Guzzi 1000 Le Mans
1994 Kawasaki Concours ZG 1000A9
2005 Harley Davidson Fat Boy

Offline grcamna2

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Re: 400F cam chain tensioner damper fell out.
« Reply #6 on: January 02, 2023, 04:53:12 PM »
Nice job getting the part out and fixing it. 8)

Agreed  ;)
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline BenelliSEI

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Re: 400F cam chain tensioner damper fell out.
« Reply #7 on: January 02, 2023, 05:17:34 PM »
Pheeeuw! Nice save.