Author Topic: IT400D shock bump stop replacement  (Read 4133 times)

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Offline mboddy

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IT400D shock bump stop replacement
« on: August 09, 2008, 12:37:05 pm »
The old bump stop has crumbled. I got a replacement.
The spring is off and the preload lock nut loosened.
What do I do now?
Vinduro Penrite Team
1980 Yamaha IT125G, 1979 Yamaha IT175F, 1984 Yamaha IT200L, 1977 Yamaha IT250D and IT400D

YSS

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Re: IT400D shock bump stop replacement
« Reply #1 on: August 09, 2008, 02:14:12 pm »
This looks like a job for a suspension shop. Where do you live ? One of our trained outlets can help you with that , if you wish

Offline LWC82PE

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Re: IT400D shock bump stop replacement
« Reply #2 on: August 09, 2008, 02:38:28 pm »
if the bottom mount unscrews from the shaft then you need to do that. you will need some blocks the right size to clamp the shaft though and some heat will probably be also needed.

if the bottom mount doesnt unscrew then the only way is to pull the shock right apart
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022

YSS

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Re: IT400D shock bump stop replacement
« Reply #3 on: August 09, 2008, 03:54:47 pm »
 ???   hmmm interesting, where did you go to Suspension school Leith ?
« Last Edit: August 09, 2008, 04:15:48 pm by YSS »

Offline LWC82PE

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Re: IT400D shock bump stop replacement
« Reply #4 on: August 09, 2008, 05:23:19 pm »
Well that’s how I’ve always done it. I don’t know if an IT shock is any different, but for twins I just unscrew the bottom eyelet holding the shaft in special shaft clamp blocks, slip on the bump stop and screw the eyelet/clevis mount back on. If I already have the shock apart with the piston off then I can slide the bump stop on from that end and the bottom eyelet does not have to be unscrewed. Pretty simple really.

if its an all sealed up/not rebuildable shock with non removeable bottom eyelet then thats another issue but can be done as you would know.
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022

Offline paul

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Re: IT400D shock bump stop replacement
« Reply #5 on: August 09, 2008, 05:31:40 pm »
stop press the new books out
« Last Edit: August 09, 2008, 05:54:16 pm by paul »

lms6201

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Re: IT400D shock bump stop replacement
« Reply #6 on: August 09, 2008, 06:22:34 pm »
hell, i just made a mould from a toilet roll core and some tape and filled it with silastic ,takes a while to cure ,  who wants to disassemble a good gassed up shock , does that get me into shock school ?

YSS

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Re: IT400D shock bump stop replacement
« Reply #7 on: August 09, 2008, 06:33:52 pm »
You just passed the written test.  :D  Suspension is Fun :D  Oral tests taken in the sportsbar only. :o
« Last Edit: August 09, 2008, 06:40:02 pm by YSS »

Offline mboddy

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Re: IT400D shock bump stop replacement
« Reply #8 on: August 10, 2008, 10:13:54 am »
  who wants to disassemble a good gassed up shock?
Not me!
Looks like I'll slice the new bump stop with a razor blade and then superglue it back together when it is on the shock.

Thanks for your replies guys.
Vinduro Penrite Team
1980 Yamaha IT125G, 1979 Yamaha IT175F, 1984 Yamaha IT200L, 1977 Yamaha IT250D and IT400D

YSS

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Re: IT400D shock bump stop replacement
« Reply #9 on: August 10, 2008, 10:55:37 am »
You got that idea out of page 7 didnt you ?  :D

YSS

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Re: IT400D shock bump stop replacement
« Reply #10 on: August 10, 2008, 11:01:51 am »
Actually the best shock fix ,I have seen so far by a specialist , was a TT 600 shock.  The "doctor " fitteted a grease nipple to the reservoir and topped the leaking shock up with the grease gun . Well ,it did not leak anymore .  :D  ( Full details of that procedure on page 51)

Offline paul

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Re: IT400D shock bump stop replacement
« Reply #11 on: August 10, 2008, 11:13:28 am »
walter what other funny thing have you seen done to shocks

YSS

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Re: IT400D shock bump stop replacement
« Reply #12 on: August 10, 2008, 11:18:49 am »
Paul , if you go to page 8 you will read about the guy that sliced the bumprubber and used a hose clamp to join it again.... ???  But for now ,I wont give to much away , please come and  buy the book .

YSS

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Re: IT400D shock bump stop replacement
« Reply #13 on: August 10, 2008, 11:33:59 am »
You are so right Paul , that actually should have gone straight after the introduction page where it explains the "Caution" stickers.

YSS

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Re: IT400D shock bump stop replacement
« Reply #14 on: August 10, 2008, 11:46:51 am »
Sorry Paul , we are talking about the bump stop chapter , not the bum stop chapter ( is there a chapter about that in the book  ???)