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Uj ratlle
Posted: Tue Jun 04, 2019 8:00 am
by marve114
Hi guys
I’ve got a rattle coming from my sj sounds like ujs
Only does it when your coasting along with the clutch peddle down
No noise under acceleration or deceleration
I’ve changed the transfer box thinking it was that still doing it
Parking brake on prop ok
Had a pull around on the props seem ok
Got a slightly sloppy uj on the end of the gearbox propshaft
Front prop had a sticky notchy uj but I lubed that and seems ok
Transferbox does had a RW CRADDLE could that be bent ?
I can’t see anything fouling
Re: Uj ratlle
Posted: Wed Jun 05, 2019 9:40 am
by timwilks13
Am I right in thinking you have SPOA? Just need to go and check all the basics I recon.
Engine Mounts
UJs
Clutch release bearing
Tbox mounts
Props are well greased
Prop input and output angles are set properly (in case you're getting phasing)
Do you feel anything funny with the car? Is it steering, braking, accelerating ok etc?
Re: Uj ratlle
Posted: Wed Jun 05, 2019 12:15 pm
by marve114
It only makes this noise when coasting along with the clutch pushed in
Acceleration and deceleration it’s fine
Car feels a bit vibby with the noise other wise ok
Re: Uj ratlle
Posted: Wed Jun 05, 2019 12:20 pm
by timwilks13
Inclined to say check your release bearing but not sure that makes sense as thats more likely to make noise with the clutch released not pressed. Still, check it anyway
Re: Uj ratlle
Posted: Wed Jun 05, 2019 5:27 pm
by marve114
That’s new with clutch
Re: Uj ratlle
Posted: Thu Jun 06, 2019 4:58 pm
by Anton
marve114 wrote: ↑Wed Jun 05, 2019 5:27 pm
That’s new with clutch
That's when things are most likely to fail due to manufacturing defects. Things like bearings tend to fail quickly, or last years. Just because it's new, don't check it off the list of suspects yet - although I would test everything easy to get to first, personally!
Re: Uj ratlle
Posted: Thu Jun 06, 2019 10:23 pm
by timwilks13
Checked all your props for play in the UJ's and in themselves? Was the any play in the gearbox input shaft when you had it out?
Re: Uj ratlle
Posted: Fri Jun 07, 2019 9:16 am
by marve114
Ok it’s fixed
After speaking to a few people it’s was asked a few times have I checked the ujs was aligned.
Something I kept overlooking, any how’s front was one spline out and rear was 1/4 out roughly
Sorted these and applied some grease and she rides lovely now happy days so I can keep cracking on
Re: Uj ratlle
Posted: Fri Jun 07, 2019 11:47 am
by timwilks13
You got there in the end top job!
Re: Uj ratlle
Posted: Fri Jun 07, 2019 12:39 pm
by Anton
marve114 wrote: ↑Fri Jun 07, 2019 9:16 am
After speaking to a few people it’s was asked a few times have I checked the ujs was aligned.
Why didn't we think of that?
Good job you fixed it instead of trying to ignore it, out of phase UJ's are a great way to break things!