Subject: RE: Into the timing chest
Author: joe jump
Date: Jan 3, 2005, 10:34 AM
Post ID: 1718145738
There was an interesting note in Guzziology about how the rubber shards
from the tensioner block would migrate through the oil passageways. I
once replaced a tensioner in a pal's 850T and decided to check the
rocker spindles as Richardson recommended. Found both intake & exhaust
rocker pins on the L/H cylinder plugged with rubber - absolutely no oil
was passing through these. Took about 10 minutes each with wire & spray
carb cleaner to get them cleared out; they were plugged up tight. I've
checked others since then that were clear. Might be worth a look - good
luck!
Joe in St Louis
850T Powererd Ambo
"Junkyard"
Ted Ward wrote:
My rubber block is missing so I'll order a tensioner tomorrow. There is a little damage to the inside of the case, but nothing too extreme. Thanks for the write up. Ted Ward ----- Original Message ----- From: "TT Nelson" <Twistybl-@aol.com> Greetings, This is not as complicated a fix as it seems, as you have probably gleaned from the board. The Valtek chain tensioner will fix you right up. You should examine your timing chain for damage, as usually when the rubber block goes the chain makes a a half hearted effort to saw it's way through the engine case. I have seen at least one instance where the damage to the chain on the outside face caused the owner to need a new one. I got away with just using my old one, If one as respected as Mark Etheridge says they are good to 50K, I feel good about reusing mine. The only special tool I needed was a decent gear puller to get the crankshaft pulley mount off. The timing chest cover is not strong and would probably crack with slight provocation. I may have had to fabricate a cheater to hold that mount while I removed the crank nut. Once I got inside the chest, I removed the chain and all of the sprockets at the same time- after I checked and marked alignment on not only the sprockets, but the respective shafts. Thats the way everything goes back in too, just hold all the sprockets in the cahin and slide it back on, then off, then on, It will most likely take a few times to get it right. This takes a steady hand as you be dealing with woodruff keys and the tensioner too! Just stay calm and practice your Guzzi-do. If you have not dropped your oil pan, take the time to do so and see the horrific wads of rubber shrapnel and goo that used to be your tensioner. You will feel really good about cleaning that out. If I may be of more assistance I shall. If some of the smarter Guzzijitsu practitioners dont beat me to it. TT Nelson 74 4ls LAPD |
Joe in St Louis
850T-Powered Ambo