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jrivera mikelevy's article
Dec 4, 2008 at 14:48
Dec 4, 2008
Crank Brothers Joplin - Review
Two days after figuring out how to do it... I got the instructions from Crankbrothers. I hope it helps you, as it helped me! My Joplin is just like new now! Crankbrothers Joplin Oil Change *For just setting air charge - see below instructions Holding in remote lever or hand actuated lever, cycle post upside down several times. Let go of lever. Remove 10mm nut at bottom and unscrew Crankbrothers engraved collar. Remove outer tube. (Slides off) Remove micro Schrader valve cap at bottom of compression shaft (flat head screw driver). Cover Schrader valve with paper towel and release any pressure still in post. Remove Schrader valve core. With post right side up, aiming bottom valve into an oil bucket, release remote lever or squeeze hand lever. *This will release any pressure left and oil. Holding release lever in, cycle compression shaft (gold color bottom shaft) up and down, allowing oil to drip into oil bucket. *This will cycle out all the left over oil inside. At this point there should be no pressure and virtually no oil left in the post. Refilling post: Remove seat clamps from post and clamp head into smooth jaw vice, with compression shaft facing up, for easy filling. With a 60CC volume or more syringe (you can use smaller and just fill it several times) fill syringe to 55cc of 5wt or 10wt oil. *Oil weight does not matter but the volume does. Put plastic syringe tip into Schrader hole, slightly screwing it in to create a seal. Push oil into post at the same time releasing post lever. Cycle the compression shaft at the same time. *Your doing a couple of things at once here! The lever needs to be opened up, as well as being cycled, to allow oil into the lower chamber past the valve system and accept all 55cc of oil. Put a paper towel around bottom of syringe and Schrader valve to keep oil from “spitting” when pressure is release by removing syringe tip. *As you inject oil you build a small amount of air pressure. After all 55cc of oil is into post, install Schrader core (light torque). With standard shock pump pressurize to 70psi. Hit release lever, pump pressure will drop, pump back to 70psi and hit release lever. Continue to do this till it stays at 70psi when release lever is pushed. Remove pump. Reinstall micro cap, reverse installation of outer tube. *removal of outer tube in post instruction manual included with post. Cycle post several times with lever squeezed to activate valve system. Check for firmness at top and holding at bottom. If it continues to be squishy at top, more oil is needed, only 2 - 3CC max more is needed. Get post situated back into vice. Hold lever and cycle compression shaft 5+ times with release lever squeezed. This will be tough as you are pushing against high pressure. Undo micro Schrader valve cap, cover valve with paper towel and release pressure. Safety glasses on! DO NOT SQUEEZE LEVER FROM THIS POINT ON. Oil will shoot up if you do! Add 2 - 3CC of oil to Schrader hole. (Schrader core removed) Close up system, follow above procedure for this. This will do it! Go ride! Setting air pressure in Crankbrothers Joplin seat post: Holding in remote lever or hand actuated lever, cycle post upside down 5 -6 times. Let go of lever. Remove 10mm nut at bottom and unscrew Crankbrothers engraved collar. Remove outer tube. (Slide off) Remover micro Schrader valve cap at bottom of compression shaft (flat head screw driver). Cover Schrader valve with paper towel, Face Upwards, push Schrader valve to release any pressure still in post. Remove seat clamps from post and clamp head into smooth jaw vice, with compression shaft facing up, for easy filling. With standard bicycle shock pump, pressurize Schrader valve to 70psi. Max pressure = 75Ppsi. Leave pump on post. Hit release lever, pump pressure will drop. Pump back to 70psi and hit release lever. Continue to do this till it stays at 70psi when release lever is pushed. Remove pump. Reinstall micro Schrader cap. Grease glide rings and guide block & install outer tube Tighten 10mm nut at bottom to 40in/lb Tighten Maverick seal head collar, hand tighten, over tightening this will slow the post down by crushing to rubber seal. Cycle post several times with lever squeezed to activate valve system. Check for firmness at top and holding at bottom. Done! Go ride!
jrivera mikelevy's article
Dec 2, 2008 at 11:23
Dec 2, 2008
Crank Brothers Joplin - Review
Here's the Maverick Instructions link http://www.maverickbike.com/cms_images/file_17.pdf
jrivera mikelevy's article
Dec 2, 2008 at 11:16
Dec 2, 2008
Crank Brothers Joplin - Review
The Joplin uses 55ml/1.87oz of 5W Shock Oil. I'm trying to find detailed instructions on how to replace it.
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