Technical 130 multijet hydraulic clutch problem

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Technical 130 multijet hydraulic clutch problem

Ducatiman

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Bit of info that might help others who encounter this issue.....

Driving the motorhome home last weekend and after a fairly long stretch of driving on cruise control turned it off to exit the motorway, foot on the clutch pedal to down shift for the slip road and it went straight to the floor! There was no lead up to this it just went.

I managed to pull over to the side and get up on the grass verge then called out the AA. He reckoned the slave cylinder had gone tits up but there was no sign of leaking fluid under the gearbox. Last time they recovered the motorhome they damaged the towbar as the guy doing the recovery didn't know how to get a vehicle with so much overhang onto the truck, so I decided to just drive the last 30 miles with no clutch.

When I got home I had a better look at it and found out that the clutch and brakes share a common reservoir, which sits on top of the brake master cylinder. The reservoir is designed to prioritise the brakes so the take off point inside for the clutch is higher up. The fluid level was about 2mm below the maximum level.

I took the pipe off the clutch master cylinder and it was bone dry so I carefully filled the reservoir up to just over the max level, as the vehicle does sit on a slightly sloped drive. Still no fluid at the end of the pipe! I put the pipe back on to the master cylinder then disconnected the reservoir end, attached a small funnel to the pipe and slowly filled the system up with brake fluid. Bled it out by disconnecting the pipe at he slave cylinder end and gradually got the pedal up to the correct height. Clutch worked fine!

As there is plenty of room under the bonnet at that point I bought a small reservoir from a race shop up the road, a new bit of pipe and rigged it up on a small bracket that fits neatly on to the web atop the coolant tank. Filled it up and bled it out again. Left it overnight to see if the level dropped and hey presto it is sorted.

It proves to me that the height positioning of the clutch fluid take off point in the original reservoir is to say the least a tad nominal, my drive is nowhere near as steep as some of the roads we encounter while travelling so it is inevitable that the top of the clutch pipe is at times open to the air.

My modification will allow me to monitor the clutch fluid level very easily and I can't see a downside to it.
 
ive had the clutch line itself leak behind the engine and a master cylinder let go as well ive also lost the pivot pin on the clutch pedal work its way out all theses things will also lead to no clutch pedal and its sinking to the floor
 
I had the same problem of the clutch pedal going soft and not returning when changing gear whilst touring in Germany. I suspected the slave cylinder but there was no loss of fluid from the reservoir. I operated the clutch pedal by hand 30 or so times and some pressure returned. I operated the clutch pedal by foot about 100 times and full function returned and has stayed that way over the last two weeks.
 
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Re: 130 multijet hydraulic clutch problemhttps://cdn-i.fiatforum.com/images/icons/ico

Really helpful, thanks.

Bit of info that might help others who encounter this issue.....

Driving the motorhome home last weekend and after a fairly long stretch of driving on cruise control turned it off to exit the motorway, foot on the clutch pedal to down shift for the slip road and it went straight to the floor! There was no lead up to this it just went.

I managed to pull over to the side and get up on the grass verge then called out the AA. He reckoned the slave cylinder had gone tits up but there was no sign of leaking fluid under the gearbox. Last time they recovered the motorhome they damaged the towbar as the guy doing the recovery didn't know how to get a vehicle with so much overhang onto the truck, so I decided to just drive the last 30 miles with no clutch.

When I got home I had a better look at it and found out that the clutch and brakes share a common reservoir, which sits on top of the brake master cylinder. The reservoir is designed to prioritise the brakes so the take off point inside for the clutch is higher up. The fluid level was about 2mm below the maximum level.

I took the pipe off the clutch master cylinder and it was bone dry so I carefully filled the reservoir up to just over the max level, as the vehicle does sit on a slightly sloped drive. Still no fluid at the end of the pipe! I put the pipe back on to the master cylinder then disconnected the reservoir end, attached a small funnel to the pipe and slowly filled the system up with brake fluid. Bled it out by disconnecting the pipe at he slave cylinder end and gradually got the pedal up to the correct height. Clutch worked fine!

As there is plenty of room under the bonnet at that point I bought a small reservoir from a race shop up the road, a new bit of pipe and rigged it up on a small bracket that fits neatly on to the web atop the coolant tank. Filled it up and bled it out again. Left it overnight to see if the level dropped and hey presto it is sorted.

It proves to me that the height positioning of the clutch fluid take off point in the original reservoir is to say the least a tad nominal, my drive is nowhere near as steep as some of the roads we encounter while travelling so it is inevitable that the top of the clutch pipe is at times open to the air.

My modification will allow me to monitor the clutch fluid level very easily and I can't see a downside to it.
 
Re: 130 multijet hydraulic clutch problemhttps://cdn-i.fiatforum.com/images/icons/ico

Really helpful, thanks.
 
Re: 130 multijet hydraulic clutch problemhttps://cdn-i.fiatforum.com/images/icons/ico

Really helpful, thanks.
The story continued........................

After a short time of thinking the problem had gone away it returned and fluid drained from the tank. Couldn't see anything under the gearbox so wasn't sure what was going on.

Eventually turned out to be a failed clutch slave cylinder and the design of this machine means that the gearbox has to come out to change it. :( :(

I had the gearbox removed and while it was out the dodgy synchromesh parts replaced, had a new clutch fitted while it was apart and when it was all put back together it worked fine.
 
Thanks so much for this. My vehicle is in the Highlands with my son (I live near Plymouth). The breakdown cover mechanic got him going and hopefully we will get him home. My guess is that it’s the slave cylinder - hopefully he can pump himself home minimising gear changes. He managed Inverness to Ullapool on one change last night!
 
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