just pulled apart 1 more 2010 xfire 800 dd today sled has 900mi and the bearing was shot on the gear that drops in to the planetary .the bearing that is on the end of the shaft that drop in to planetary.3rd one I have done this yr 3 out of 3 all in pieces 1 09 2 10s all the guys thought there sled was fine and were shocked when we pulled the gear.if I had a 09 10 dd I would deff order the BDX big bearing and get it done less than 2 hr and 35 bucks will save you close to a grand when she blows
1 more 2010 DD today
- Thread starter ezra
- Start date
trailshredder
Member
My son has an 04 f7. So far no problems....is this year (04) DD typically a "good" one??? Or should we be tearing her down??
indy_500
Well-known member
04 F7 shouldn't have DD
trailshredder
Member
It does...been changing the DD fluid annually
trailshredder
Member
I will check the build date in the morning
The only sled that came with DD in '04 was the ZR 900
trailshredder
Member
Just talked to my son...it's an 05. Sorrry boys...my bad.
Ezra, I'm going to be tearing mine out, hopefully tomorrow and checking/replacing the bearing. By what you're saying this would be the bearing for the sun gear (small innermost bearing) Is there tools or bearing pullers, press needed for this or is it a drop in? Also is this bearing only avail from BDX, or is it just a certain number SKF or Timken Bearing that is better built than the original?? If orrdering bearings from BDX is there anything else that I should be getting also--I've got a stock 09 CF8-it will soon have a speedwerx clutch kit, but otherwise stock, I'm not terribly hard on it either. about 2200 miles on it.
Is there a telltale sign of this brg failing? Noise, vibe, hot oil smell? Just curious.
Is there a telltale sign of this brg failing? Noise, vibe, hot oil smell? Just curious.
I don't know have never pulled one apart with more than 3k on it.I know of one with 6k on it but have not worked on it ever to dirty for me to play with.I have my standards if the owner dose not care enough to keep his sled clean and tidy I don't need to work on it and open that can of worms
well the 09 is the most ez to replace some of the 10 have had to have 5thw taken off the shaft to let the bdx bearing seat far enough down to fit corect
i have been abel to get the bearing off with a standerd gear puller some guys use a pitman puller my bud has a press so i use it to press on bdx bearing but a vice would prob do the job
if the bearing is bad you will know it the 3 i did this yr have been in pices
you pull the old one out and the spacer and press on the dubbel row
some guys are finding the same bearing at napa but i have not looked just got the bdx
tons of picks if you do a search on snow west or backcountry rebbels both have good multi page posts on subject
pm me if you want to chat and i will give you my number
trailshredder
Member
Just out of curiosity...what is the advantage (if one exists) of DD vs. chain and gears. Just seems to me like this whole DD thing is nothing more than one big PITA.
indy_500
Well-known member
There is not one stinking advantage to DD. That's why cat went back to chaincase on the new sleds.
not true the whole point of the lay down twin was to keep the weight low and in following that goal the DD kept the clutches low breaks low no jack shaft etc .big part of the reason the M domonated for yrs in the hills.
the reason they stopped using the DD was a financial decision to not keep paying BDX.
the DD is a great concept the issues came when they went away from the original BDX specs and started tinkering and cheapening some components ie bearings
Took mine apart, bearing is still intact, but looks like 2 areas of cage chipped/broke off. Seems strange to me that they'd put a sealed type bearing in an area where its immersed in fluid, I'd be half tempted to remove the seals from the new bearing--I won't do it, but it seems like it'd be better that way. Taiwan is printed on bearing seal.
indy_500
Well-known member
You want to weigh a jackshaft for me? it's a couple lbs. Can't tell me hundreds if not thousands of complaining customers is worth a couple pounds. I can see where you are going with the low point of gravity, but dont see the DD making much of a difference. New Poo Pro rolls over just as good if not better than the old M.
For those of you with the [bulletproof '07-'07 DD] equipped sleds I have a different story. Both my '06 600 XFires ate themselves even with recommended fluid changes. Talked my buddy into buying a '07 (duh). Whamo he learned about the DD the hard way also. After rebuilding the 06's which were salvageable we changed fluid every 500 miles until we sold the sleds (soon after). Buddies '07 DD is a talking piece on his bench to this day (total carnage). Replaced with a M sled takeout from a guy off SW.com. The '07 is a goofy design with the reverse lever allowing moisture to enter the case on most I've seen? No offense to Cat DD sled owners but I would not want another. Also seemed to rob HP big time on my 600's?
mezz
Well-known member
The issue I believe is those equipped with reverse. I have an 06 x-fire without reverse with a tad over 4,000 tic's on it & I have not had an issue with it whatsoever. I flush & change the fluid every season, done deal. IMO the result of having the DD not only enables the lay-down twin to provide a better center of gravity, the elimination of the jackshaft puts all the power directly to the drive sprocket with no loss of power transfer through the jackshaft. It's not just a weight loss issue, of course the weight reduction is a result of this set up but not the entire reason for the DD. As ezra stated, when they got away from BDX to save production cost, they lost the quality of the parts in 09-10.-Mezz