How to Service 39mm Front Forks : Spring Upgrade

Рет қаралды 146,842

5 жыл бұрын

We show you how to replace a blown for seals on this 2001 Sportster and while you're at it upgrade the springs with some heavy duty units. This will be a similar procedure on most 39mm front ends that can be done with fairly basic hand tools.
Fork Seal Kit
www.jpcycles.com/product/2200067/j-p-cycles-deluxe-fork-seal-rebuid-kits-for-showa-39mm?How_to_Service_39mm_Front_Forks_:_Spring_Upgrade&XB198ubzILI
Heavy Duty Fork Springs
www.jpcycles.com/product/606-357/progressive-suspension-heavy-duty-stock-length-fork-springs?How_to_Service_39mm_Front_Forks_:_Spring_Upgrade&XB198ubzILI
Fork Oil
www.jpcycles.com/product/230-458/pj1-30w-fork-oil1-2-liter?How_to_Service_39mm_Front_Forks_:_Spring_Upgrade&XB198ubzILI
#HarleyDavidson #Sportster #Forks

Пікірлер: 158

@jpcycles 3 жыл бұрын

See more at Countersteer. www.jpcycles.com/countersteer?How_to_Service_39mm_Front_Forks_:_Spring_Upgrade&XB198ubzILI

@lynnmaltese1395 Жыл бұрын

Probably the best how to video I've used for DIY purposes. Absolutely right on the money, step by step. Thanks for saving me hundreds.

@anthonysmalawipredators8794 3 жыл бұрын

I made a nice cocktail out of JPCycles, lowbrow, Party on Forever, & Shadetree Surgeon 39mm fork videos and now I have a bitchin 6 over front end. Shoutout 2 the homies

@gettindrunker 2 жыл бұрын

Real mechanics don’t wear gloves. Thanks so much for sharing and thanks for being straight to the point brother!

@hybridgsxr750 5 жыл бұрын

Great tip about marking the fork cap when compressing the spring.

@Chris-0113 4 жыл бұрын

Superb job. Believe it or not, you're the only person I've seen actually clean the tube up while you have it off of the bike.

@nedhd9375 Жыл бұрын

This is a straight to the point no B/S video that shows you how to do it right, thank you J & P Cycles you have a new subscriber.

@andrewminicozzi1634 5 жыл бұрын

The music is very distracting, but I love the video. Thanks for posting it.

@GoldLeaderX 2 жыл бұрын

Agreed, music detracted from the video.

@RydeOfDoom 3 жыл бұрын

Many thanks for this, after a lot of searching this has to be one of the best and easiest videos to follow for this. Much appreciated J&P cycles.

@bodeine454 5 жыл бұрын

Loving these videos, learning a lot!

@Sandro-ir4vk 4 жыл бұрын

Very detailed. Superb video, thank you!

@tobypaone3426 5 жыл бұрын

Great video with lots of good tips. Thanks for putting this on.

@FLHCSfan68 3 жыл бұрын

Excellent videos!!! Greatly appreciated.

@7hotfuzz7 2 жыл бұрын

I was always scared to touch the forks but this video really laid everything out clearly. Gonna install my 4 overs this weekend. Thanks!

@wesadams1223 2 жыл бұрын

Thanks for this video, J&P Cycles! I just finished rebuilding the forks on my '06 Sportster, and I did it by following your instructions step by step. It seems to have turned out perfectly, and I give the credit to y'all. The only problem I had was not being able to fully seat the seals with my homemade PVC driver, so I ordered the one from Motion Pro and it worked perfectly. So far, no leaks!!

@vonryansexpress 2 жыл бұрын

Excellent - top quality video showing me all I need to know - nice one 👍👍👍

@gorillahd9247 5 жыл бұрын

Excellent video - I plan on doing the same mod to my 1999 FXDX. Scott

@fredclow9326 2 жыл бұрын

Thank you, this is the best fork over view I have seen yet." Big boy make spring compression look easy"

@rickeyvarga5432 5 жыл бұрын

Best fork service/rebuild video out here, great tips of the trade! Installing progressive's on my '05 FXDL next week and will be following step by step ...thanks!!!

@jpcycles 5 жыл бұрын

Thanks!

@larrylangley9128 4 жыл бұрын

great video definitely bookmarking

@brotherstanleo 4 ай бұрын

Great video! Thank you for sharing! I will be doing mine soon.😊

@whocares0692 2 жыл бұрын

Great video and great tutorial. Thanks

@donpet8258 2 жыл бұрын

Of all the Harley how to videos. J&p are by far the best. Thanks

@XenaTheQuadCamBikah 3 жыл бұрын

I put a fork spring kit in my sportster many years ago and what helped me get the caps back on was a socket with a breaker bar held straight up. I did later purchase the cap socket as it's custom made for the shallow nut on the cap. Excellent how to video JP Cycles. ~ Xena @ the XL Forum.

@geraldburrow3524 Жыл бұрын

I've never done this, thank you very much

@viergarcia 2 жыл бұрын

This is exactly the vid i needed. Awesome.

@Johnsrudomatic Жыл бұрын

you guys have the best videos, thanks man

@nightmaremike1092 8 ай бұрын

Bro this step by step video helped me out thank you so much

@peglegtoo Жыл бұрын

Great, clear video. Thanks so much for including the torque specs. so many others tell you to look it up. Not sure if you mentioned this one but I saw Torque fork top caps 22-29 ft lbs

@GarageBuddys 2 жыл бұрын

thank you for your video, very useful, a greeting from Italy

@bikesandacreage8885 4 жыл бұрын

Great video!

@davidscottcurtiscurtis775 10 ай бұрын

The best video I've seen about it

@joesphschramm3754 11 ай бұрын

Great video and thank you for it! In the Clymer manual it says to put the tighter winds towards the bottom of the fork. I see a lot of guys use the impact on the allen bolt at the bottom of the forks where the oil drains out. I don’t do that. When i went to replace the seals myself last time. I notice the guy that replaced them before me used zinc bolts. Which is softer. So the heads were damaged and i was unable to get a 6mm in there. I had to pound a 1/4 allen in there. Thankfully that worked fine to remove the bolt. Just take the extra 4 minutes to use a wrench to put them in. So the next time you need to replace the seals, the bolt head will be able to fit the 6mm.

@malcky630 11 ай бұрын

Yea very good, thanks from England.

@nathanielboyea8443 8 ай бұрын

Many Many Many Thanks for the video.

@mattyarolem383 3 жыл бұрын

Great video no bullshit and not over explained

@trtvm5 2 жыл бұрын

Wow mate you made that a lot harder on yourself than you needed. Good informative video, don't get me wrong. I assemble the shock off the bike. Just makes everything so much easier. By doing it off the bike you can also add oil before adding springs and spacers, work the shock and prime it. Then measure the airgap. Again, good informative video, and thank you for all the videos and knowledge that you share.

@Davesjewelryla 3 жыл бұрын

Fantastic video 5 Stars

@gradyshawver7643 Жыл бұрын

Great video. Thanks!

@janmyska4458 Жыл бұрын

Super video👍 thank you for help

@6BTGriddy 26 күн бұрын

Great video and awesome instructions however my .02 cents, I would highly suggest seating the top bushing and washer in the fork leg before sliding the seal ontop. This will save your wrist and hands from going to pound town and damaging the seal if the bushing is a tight fit.

@johncasor9698 2 жыл бұрын

Another Great Video....

@SilverFox-fq7xi 4 жыл бұрын

Good vid. Marking where the fork nut starts to thread is good info thanks. I’m gonna do the same thing to my 2000 Sportster. Going to drop the progressive OEM length springs in to match my rear 412’s I put on last winter. Thanks.

@jpcycles 4 жыл бұрын

that's a good upgrade you'll dig it.

@jacobmiller901 4 жыл бұрын

This was super helpful. I found 30 inches of 1.5" Sch. 40 PVC pipe is great for an inexpensive seal driver. Also, I found it is so much easier to set the seal if you set the lower (thicker) bushing into the fork lower body first with the seal spacer (thick washer) and then seat the seal. There is just enough tolerance to squeeze the bushing in the fork lower, so doing that before adding the seal saved me some elbow grease. Otherwise I would've been pounding that down forever trying to get it low enough to install the retaining ring.

@chadbrown1711 4 жыл бұрын

This dude is the best for what i am doing. No silly shit, thank you Mr. water buffalo.

@jpcycles 4 жыл бұрын

you're welcome - Patrick (AKA Mr. Buffalo)

@chadbrown1711 4 жыл бұрын

@@jpcycles HaHAha. Nice.

@dirtybertil 3 жыл бұрын

Great video! Hats off!! :-)

@steventwiddy3402 2 жыл бұрын

I love your videos

@theeastman9136 2 жыл бұрын

Great explanation thank you; I just got a used FatBoy and I can apply it right away. I could do without the music though.

@raho24781 2 жыл бұрын

KooL KooL KooL br0 ya ain't afraid ta show ya worK ,,,Trustable ~! and Appreciated

@briankoons2266 3 жыл бұрын

Thanks so much!!!!

@chip9832 2 жыл бұрын

Thus guy treats all bikes reverently

@christopherblowers7958 3 жыл бұрын

what size should i be trimming the spacer for an 05 dyna lowrider,and also what weight should i get for the fork oil most useful vid ive seen so far thank you

@JesusGarcia-ij3yd 3 жыл бұрын

Good informative vidio

@rickpadilla9093 3 жыл бұрын

Excellent

@vincentlemaire1604 3 жыл бұрын

good video,nice music

@RobHarley64 5 жыл бұрын

Thankyou sir.

@matttuna 4 жыл бұрын

so many questions lol, im new to the motorcycle world, and i have a 2011 harley sportster nightster 1200n that has a bent fork but idk where to even begin to find a new one.

@chrisiorio5278 2 жыл бұрын

sick!

@FASIGMAN 2 жыл бұрын

Cheers man..........

@clintonlunn4357 10 ай бұрын

Another great video, thank you. What year did sportsters go to 49 mm forks?

@fredaustrinojr8186 3 жыл бұрын

thanks

@StandingGoatsRescue 3 жыл бұрын

I just picked up a 94 Sportster XL 883, and I am going to most likely have to replace the drive belt because it has been sitting in a storage shed since 2002. I'm living on disability nowadays so I cannot afford to have a shop do the work, I'll be maintaining it from now on. Do you have any videos on how to replace the drive belt on a 1994 Harley Davidson Sportster XL 883? I'll be doing the forks too, but after watching your video I believe that it will be simple enough that I can do it. Thank you in advance for any help you can provide me.. Have a great weekend! Donnie (Standing Goats Rescue)

@MrDarthmaul10 4 жыл бұрын

I put a 6” over fork tubes on my sporster XL883 2007 i have to put 2 spacer the stock size 8” and a pvc about to 3” to have some compresión and now its hittimg so hard everytime i hit the brake but runs fine in the higway. what can i do to fix it

@RayfordRaySiegel Жыл бұрын

How did you clean the inside of the fork tubes? What all is safe to use? Also, what weight of oil is what comes in Sportsters (particularly 2003 Sportster Customs)? The manual doesn't state the weight, for the Type E fork oil, so I don't know the equivalent of it.

@egosfall Жыл бұрын

What if you don't get the forks back at the same height? Will throw off alignment wont it Great video btw

@gucci4871 3 жыл бұрын

Fork tubes ,can they be replaced or upgraded..I saw something on tubes flexing at higher speeds .not sure if it's an issue ..

@BarbaritoAdolfo777 3 жыл бұрын

some questions here! top bushing needs to be pressed or not? shock priming is not needed?

@clocko322 Жыл бұрын

So if the fork oil is "10.2 oz" is that with normal set of replacement springs on a 39mm or is the fluid a different measurement when you put "progressive heavy duty" springs in, being the thickness of the heavy duty springs are thicker, doesn't that displace more fluid???

@hs7382 3 жыл бұрын

Hello, I am planning to buy the same motorcycle. Can you fit a 120/70-18 (wider) tire on this motorcycle ? My only concern is it looks little too slim.

@dustyhaskin157 3 жыл бұрын

What is the part number for that fork cap socket? And where can I get one?

@johncasor9698 2 жыл бұрын

When do you say to change out the fork oil ???

@daddyojoe6678 3 жыл бұрын

Where can I get a 6mm allen bit just like yours?

@cosmalick7061 3 жыл бұрын

Also is a service of oil change

@hs7382 6 ай бұрын

Hello, your video is very informative. My 2005 sportster front forks bottoms completely. It doesn't have any leaks, looks completely fine. Can I just take off fork caps, replace springs and oil from top ?? Thanks.

@jpcycles 6 ай бұрын

Yes, that is no problem. - Patrick

@calssidymatthews9216 3 жыл бұрын

What size star bit for the pinch bolts?

@williambeltran1971 Жыл бұрын

What size is the wrench used for the 39mm cap?

@Bubbyis12 3 жыл бұрын

So what size is that nut on top of the forks?

@fluffypuppy720 8 ай бұрын

Is it necessary to cycle the forks before installing springs?

@user-yq8db4xt6y 10 ай бұрын

How do I get my 31/2" spacer in? That's 4" preload.

@loosescrew9438 2 жыл бұрын

How can I tell what mm my forks are? I have a 72 Iron Head stock forks.

@mickygill3606 4 жыл бұрын

can you please let me know the front fork zise of street 750

@ajsettlemyer3646 4 жыл бұрын

Thanks for this video, working on my wife's 96' FXDL. Two questions, how does that oil get so gross with the wiper and the seal? And what are the fork caps torqued to? Thanks.

@jpcycles 4 жыл бұрын

When the oil breaks down it gets pretty nasty. Torque fork caps to 22-29 ftlbs

@jeffreylonigro1382 4 жыл бұрын

J&P didn’t really answer that for you. The oil gets dirty for two reasons: first of all, there is a breather hole in your tubes and air gets exchanged in and out with every stroke of the front end. The air has small mounds of dirt which gets deposited in the fork oil. The other reason is that even though there is a seal on the tubes, there are microscopic particles of dirt which sticks to the small amount of oil that is left every time the seal wipes the fort tube. I change fork oil every year. Makes the seals last longer.

@Chris-0113 4 жыл бұрын

@@jeffreylonigro1382 well also the seal was bad and leaking. The contaminated oil was probably more of a result of that.

@raho24781 2 жыл бұрын

07 Dyna whats the best springs sTiffiest ,and Length of the plastic and springs

@eddiemorales5488 4 жыл бұрын

Hey so I have same progressive upgrade 39mm but also installing 4" over fork tubes that come with a pvc inside that as well my question is what would be my measurement to cut new PVC for this set up???

@7hotfuzz7 2 жыл бұрын

Did you ever figure this out? I plan on doing the same

@Sidneybeach875 3 жыл бұрын

Anyone ever seen a sporty have different fork internal. Im stuck in thw middle of my rebuild do to this. 2016 xl1200c

@arthurchavez5131 4 жыл бұрын

Great video, definitely going to be useful this weekend. Does anyone know what size of PVC pipe to use to seat the seal. I think i saw it in another video but dont remember exact size. 06 sportster.

@CARLITOESCOBAR777 3 жыл бұрын

use 1 1/2" sched 4 pipe

@Frankfoot986 3 жыл бұрын

1 1/4 for 35mm forks 1 1/2 for 39mm. Might have to take some material off to get it to fit deep enough into the fork leg to seat the seal

@gabrieldelaroca8329 2 жыл бұрын

Anyone know where I can find those cups at 5:29 for a 2015 sportster?

@mumfordify Күн бұрын

What do you mean by 39mm front end .Where does that number come from.

@briankoons2266 3 жыл бұрын

Sir which side of the oil seal goes in the deeper side or the swallower side? Doing 1 fork this weekend. Btw great video!!

@jpcycles 3 жыл бұрын

Thanks man. The deeper side goes down.

@eltacuachi4205 Жыл бұрын

Will these parts fit a 1986 Fxr?

@85santafe Жыл бұрын

How many Nm to tighten the shelf

@mrbreezeet1 4 жыл бұрын

Good Video. My seals are not leaking, but I wanted to put a set of Progressive Suspension 11-1523 springs. I was just going to drain my oil, and replace the springs, can I just raise the bike, and take off the front wheel, and remove the top caps, and can I take those bottom bolts out to drain my oil? I know there are drain screws where I can pump out the oil, But I thought removing the screws at the bottom might let it drain better.

@jpcycles 4 жыл бұрын

Yes, remove screws at bottom of fork leg holding damper.

@mrbreezeet1 4 жыл бұрын

@@jpcycles okay thank you do I have to use an impact because the whole Rod will try to spin or can I break it Loose by hand?

@user-cn6mv9ht9k 10 ай бұрын

😊

@rox2u 4 жыл бұрын

I just changed oil in my XL1200c -04. Oil was very black and nasty. Reason in the first place to change was to get a stiffer ride. The fork was bottoming out constantly. I got 10W oil in. My spring was sitting like 10cm above the tube and it was hell to put the nuts back on. However with those stiff springs and new oil it still bottoms out. What gives?

@theblackarrow 3 жыл бұрын

Try a 15W. That’s the upgrade weight. 10W is usually OEM. Hope it helps.