Shes' Tight!!!

S

snowhite

Member
Joined
Mar 18, 2008
Messages
181
Age
63
Location
Flin Flon,Manitoba
:eek: According to my shop manual I'm supposed to have a certain amount of belt above or just below the secondary for proper deflection.Now my sleds problem is that with the new 8DN belt its very tight.I've taken all the shims out of the secondary bolts which decrease or increase the gap and this still does nothing.The belt loads up the motor when on the ground as its grabbing the primary shaft.also I noticed that the belt favours the engine side of the sheave on the primary.Is it supposed to be centered on the primary with proper alignement,(offset)?I know there is the center to center which might be at the greater setting causing this excessive tension.Any answers on the eqaul distance between the belt sides on the primary?
 
Yes the belt is supossed to be in the middle of priamary.Adjusted by removing/adding shim washers behind the secondary.Drop a straight edge like a carpeders square between the secondary shieves and place on the pri clutch for checking.Also put the little washers back on the bolts they are removed only when the belt is worn.
 
She's a '99 venture 600.I didn't have this problem as bad with a Carlisle Ultimax as bieng tight that the belt would squel at idle.Maybe the oem belt is just a little shy in length!But another thing I noticed is that on the primary clutch the sheaves are not polished right to the top, maybe a half inch is left.So to me the belt is not coming right to the top.
 
If you took the shims out of the secondary and it's still tight center to center could be off or your sheave half could have holes worn in it where the bolts sit, thats the right belt for your sled and adjusting the washers should have helped,check them other two issues..

stock primary on it??
 
KAPUSTA said:
:eek: According to my shop manual I'm supposed to have a certain amount of belt above or just below the secondary for proper deflection.Now my sleds problem is that with the new 8DN belt its very tight.I've taken all the shims out of the secondary bolts which decrease or increase the gap and this still does nothing.The belt loads up the motor when on the ground as its grabbing the primary shaft.also I noticed that the belt favours the engine side of the sheave on the primary.Is it supposed to be centered on the primary with proper alignement,(offset)?I know there is the center to center which might be at the greater setting causing this excessive tension.Any answers on the eqaul distance between the belt sides on the primary?
Click to expand...
Do you have some play in your secondary...(side to side type play)? If not , you need some, at least an 1/8 of an inch
 
Good eve,yammy and daman.I spoke to a Yam.tech this morn and he said that the 8DN is usually snug at new,it'll take a few miles to wear it in and the bit of squell is norm.Also the stock belts are of a harder composition compared to other brands.I'm going to make a jig to measure my center to center acuarately as its hard to just use a tape measure to measure in that tight space!I don't think there is a serious problem as I have never shredded a belt or flipped one off.It's just peace of mind to ask if any one had simular situations,thanks guys'.
 
What your tech should have told you is how to set your priamary clutch on the shaft so it does not sqweel.It could be as easy as pushing or pulling the secondary with your hand and listoning for when it stops...than shim add or removeing that side.YW
 
when you check your c-c distance ,if it is correct you could have gotten a 8dn belt that is shorter than spec. i had this happen before.when i buy a belt now i take a measuring tape and pick through the dealers stock until i find one that is the same as the previous one i bought.they should all be the same lenght but sometimes their not.just something else to check.
 
What about the 3 bolts in the back of the secondary? If your C-C and offset are OK. I would look at those 3 little bolts in the back of the primary. When they get mushroomed, the secondary is allowed to close more and the belt rides higher which will definitley create the "SQUEAL".
 
That's just what I was going to say. The ends of those bolts wear and need to be replaced periodically or else they don't hold the sheaves apart as far as they could. Seen several squeals dissappear after new bolts. What I would do is jack the track off the ground and make sure your track still spins slightly or very easily with a little help from you at idle. Don't want to make the squeal go away and sacrifice proper deflection. AFTER you get your center to center ironed out, of course.
 
You must log in or register to reply here.


Back
Top