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Old 12-29-2007, 04:54 AM   #1
mikeprod92211 OP
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Rear shock on LC4 / Adventure

Just a curious question:
Got a 2000 LC4E with 25k on the clock, routine maintenance includes fork oil change every year.
Contemplating replacing the fork springs with a bit stiffer set (I'm 5ft 10, 210lbs).
Also thinking about a new shock spring!
When do you guys rebuild the rear shock, replace the inner fluid and fresh nitrogen?
What's the necessary frequency of that process?
BTW, there's no leakage, no oil visible on the shock, and the linkage gets fresh grease annualy!
I don't race, ride some offroad, nothing extreme, bike handles ok for me.
Thanks for your ideas / replies!
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Old 12-29-2007, 05:42 AM   #2
johan
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Exactly the question I was about to post, I'm interested in answers too!

Additionally, I remember seeing a thread somewhere dicussing removal of the shock, claiming that if it was done in some smart way, it was a 2 minute operation. Which is the the easiest way to do this?

I'll probably send the shock for service though...


Quote:
Originally Posted by mikeprod92211
Just a curious question:
Got a 2000 LC4E with 25k on the clock, routine maintenance includes fork oil change every year.
Contemplating replacing the fork springs with a bit stiffer set (I'm 5ft 10, 210lbs).
Also thinking about a new shock spring!
When do you guys rebuild the rear shock, replace the inner fluid and fresh nitrogen?
What's the necessary frequency of that process?
BTW, there's no leakage, no oil visible on the shock, and the linkage gets fresh grease annualy!
I don't race, ride some offroad, nothing extreme, bike handles ok for me.
Thanks for your ideas / replies!
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Old 12-29-2007, 05:57 AM   #3
snaggleXR650
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The shock will drop down through the swingarm. You have to raise the swingarm a bit and get it in just the right position. Then after the shock is unbolted top and bottom, you can maneuver it out by twisting it just right. It's difficult at first, but when you find the secret spot it's pretty easy.
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Old 12-29-2007, 07:42 AM   #4
Zerodog
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From the LC4 shocks I have seen and been servicing 12,000 seems to be when a stock LC4 shock starts to show some signs of leaking. At 15,000 and up they are pretty shot and starting to leak pretty bad. This life expectancy is shorter if you offroad hard. If you ride hard offroad or in bad conditions like mud and wet sand you can expect to service your shock yearly like a dirtbike. So at 25K if the shock has never been serviced the bike has either only been ridden on the pavement or it is possible that there is no oil left in the shock. I can't wait to see inside BMWKTMBILL's shock after his mongolia trip. He put around 12,000 hard miles on a freshly built shock. It will be interesting to see the seal and bushing wear and oil condition.

Signs of leaking are this.
  • Bottom of the shock seems to attract dirt easy
  • Rebound adjuster skanky
  • Dust cover at the base of the shock tube is black and oily
  • Drops of oil under bike
  • shock clunks on full extension
  • shock is lacking good damping or the adjustments don't seem to work
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Old 12-29-2007, 10:02 AM   #5
fallzboater
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Can't help on the shock life, as my SXC has only 6,500 miles. As far as springs, I'm 10 lb lighter than you (but also have the 18L tank) and would recommend 0.48 in the forks and an 8.5 on the shock.
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Old 12-29-2007, 04:39 PM   #6
halfcab
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Had my 01 shock rebuilt a few month's ago, the rebuild did make a difference.

01 LC4 E with the large 18 tank, I'm 200 lbs and have 48's in front now, I'm going to 50's. Changed from 70 rear spring to 75.
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Old 12-30-2007, 02:52 AM   #7
johan
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Thanks for all the info,

FYI, my shock started feeling a tad worse at around 21000km, and is now at 25000km bad enough for a noob like me to actually feel a significant difference.
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Old 12-30-2007, 05:13 AM   #8
mikeprod92211 OP
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Thanks for all the replies.
I gues when the weather here in So CAl desert gets to be annoying to ride, it's time for the down time for the bike. Get those items taken care of.
Or.......hmmmmm, get that nine ninety that I'd been lusting after, and then get the LC4 done.
mike
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Old 12-30-2007, 09:10 AM   #9
johan
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Quote:
Originally Posted by mikeprod92211
Thanks for all the replies.
I gues when the weather here in So CAl desert gets to be annoying to ride, it's time for the down time for the bike. Get those items taken care of.
Or.......hmmmmm, get that nine ninety that I'd been lusting after, and then get the LC4 done.
mike
Out of curiosity, how do you define annoying weather in the desert? Too hot or too cold?
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Old 12-30-2007, 09:17 AM   #10
halfcab
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Quote:
Originally Posted by johan
Out of curiosity, how do you define annoying weather in the desert? Too hot or too cold?
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Old 12-30-2007, 07:40 PM   #11
Castleman
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Here in So. Calif, we ride from about mid October to first of April. Any other time is to hot. The only problem during the riding season is wind. I ride alot at Ocotillo Wells. I just got back yesterday and left a day early because of pending wind and rain. Its almost always sunny (Ocotillo is a bit past Palm Springs) with daytime winter temps in the mid 60's to low 70's and night temp's in the high 30's to low 40's. A good reason why So. Calif. is a good riding location except for the greenies closing more and more riding areas.
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Old 01-22-2009, 12:58 AM   #12
bmwktmbill
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Z-dog , everyone,
Here is the Mongolia shock along with my sprockets which were lubed using a Proiler.
The oil on the shock, AFAIK is from the Proiler, the shock was working fine when removed and was certainly no pogo stick, I ripped through the Austrian Alps after doing Russia Mongolia and the East block, the bike was shipped to Nova Scotia and ridden back to Wisconsin. To start the trip it was ridden to Seattle from Wisconsin and freighted to Russia. My front suspension was a non-issue, I used Z-dogs shim setup and Infinity sub tanks, a Scotts steering stabilizer, the bike was lowered around 4 inches.

It is the best all around travel bike setup money can buy IMHO.
Next week I will be sending the shock to Z-dog for service.
The total mileage was close to 16 K.
Note the original spring and the heavy preload wind necessary for the panniers and luggage I carried.



Here's a picture of the bike in Germany after being ridden across Russia and Mongolia.



b
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bmwktmbill screwed with this post 01-22-2009 at 01:10 AM
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Old 01-22-2009, 07:33 AM   #13
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Good info

THANKS

firstworks
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Old 01-22-2009, 09:40 AM   #14
JonH
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My shock turned pogo on me just one week after returning from Morroco !
I think it held out till I got home ........

Its an 06 with 16k and it turns out it was dirt in the seal and not wear and tear

IMO I would rebuild every 5k for the sake of £80 or $

If the shock and forks are unknown then rebuild before any long trip ...

I have had shocks and forks rebuilt only to fail one week later due to me allowing mud to dry on the stanchions and shock shaft and killing the seals ....

Clean them often ....

;)
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