Clutch Pivot Ball

[SlowSkyline]

Hey Guys,

What could be causing it to break again within 2 months of getting one replaced? It was replaced with a standard one, not a reinforced one, but it should not be breaking regardless in such short time.

Clutch is 18months old and is a Exceedy Heavy Duty item. No slippage.

cheers

[The Dan]

Bent fork or incorrect mounting.

Not lubricated correctly on the ball vs fork.

Clutch spring too heavy

Slave cylinder pushrod too long due to someone changing its length

[SlowSkyline]

thankyou mate Just what i was after.

[boostn0199]

Why not chuck a nismo one in for the added security since there not that expensive?

[Checkbuzz]

+1 - The standard clutch pivot ball is a known weak-link and you are running a HD clutch. You can pick up a NIMSO item off Ebay for $60 (40% stronger).

Job Done

[SlowSkyline]

Thanks guys, actually it wasnt broken again! Just talked to my mechanic.. he said the something about the Bearing on the clutch fork wasnt on properly.. i dont know much about gearboxes sorry. Hut he said the retaining pin was still on it.

Said hes never seen anything like it before... but im not getting charged for any of the work.

[The Dan]

  On 08/12/2011 at 12:11 AM, Checkbuzz said:

+1 - The standard clutch pivot ball is a known weak-link and you are running a HD clutch. You can pick up a NIMSO item off Ebay for $60 (40% stronger).

Job Done

I have only ever seen these break on heavy twin and tripple plate clutch setups or when the clutch spring seizes. I wouldn't call them a weak link. If the people replacing clutches have properly greases the pivot ball, it should never break unless the above conditions are met.

  On 08/12/2011 at 12:15 AM, SlowSkyline said:

Thanks guys, actually it wasnt broken again! Just talked to my mechanic.. he said the something about the Bearing on the clutch fork wasnt on properly.. i dont know much about gearboxes sorry. Hut he said the retaining pin was still on it.

Said hes never seen anything like it before... but im not getting charged for any of the work.

It's likely the retaining clip for the carrier was not on properly or the pivot ball retaining clip was not on correctly

Not common unless someone didn't do it right when the clutch/ball was done the first time

[zebra]

  On 08/12/2011 at 12:53 AM, Elite Racing said:

I have only ever seen these break on heavy twin and tripple plate clutch setups or when the clutch spring seizes. I wouldn't call them a weak link. If the people replacing clutches have properly greases the pivot ball, it should never break unless the above conditions are met.

Mine broke after 3-4 years with an OS Giken comp twin plate, but it looked like it had worked itself loose, which caused it to snap the thread.

Either way $60 at Autobarn for a Nismo one was good insurance.

[SlowSkyline]

  On 08/12/2011 at 12:53 AM, Elite Racing said:

I have only ever seen these break on heavy twin and tripple plate clutch setups or when the clutch spring seizes. I wouldn't call them a weak link. If the people replacing clutches have properly greases the pivot ball, it should never break unless the above conditions are met.

It's likely the retaining clip for the carrier was not on properly or the pivot ball retaining clip was not on correctly

Not common unless someone didn't do it right when the clutch/ball was done the first time

Just called him again.. He put it all back together, went to go for a road test and the clutch went to the floor again

He doesnt really have any idea why its doing it.. he did say the piston into the slave cylinder was hard to get in again.

[The Dan]

Why was the piston out of the slave cylinder??

[boostn0199]

Leak anywhere in your hydraulic system causing air to get in? It shouldnt have that much pressure that its hard to compress the piston in could be wrong adjustment on the push rod.

[SlowSkyline]

he was checking it to see if that was the issue.. got a call this morning, hes now replacing the clutch throw out fork he said its fairly worn.. and getting a reinforced clutch pivot ball just in case.

Still not sure why its going to the floor, he said all the hydraulics look fine, and when he blead the system the clutch felt great! he got it 2m out of the workshop and it went to the floor again.. some bearing is twisting even with the pin on it.. not sure what it is called.