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EGS actuator fluid change and tank location |
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Onefut
 
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  Member No: #51895
Joined: Aug 15 2018Location: North Devon |
Just some info if folk want it. The tank that holds the EGS actuator fluid is accessed by removing the left wheel and arch liner. Once removed you can clearly see the tank in the picture below at the front of the wheel arch.  The tank may need a a clean so you can see the fluid level  I removed the lid and drained the old fluid with a length of 6mm clear tube and a large syringe. It took a few goes to drain and getting the tube into the tank is fiddly as there is a blank with a hole.in it to stop things going into the tank  I did this a while ago and the fluid was quite dirty, it will need doing again soon as it's not a full fluid drain so the new fluid mixes with the old. I read online that the fluid is ATF Dexron III so I just refilled the tank with that. I changed the gearbox oil at the same time and that was dirty and in need of a change. You don't have to worry about pressuring the system as you're just draining and refilling the header tank. I left a wee bit of fluid in the tank just to make sure no air got in the line. My C4GP has done 140k Hope this helps some folk |
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gt160
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 Member No: #44878
Joined: May 19 2016Location: Exeter |
thanks this guide will come in handy when i finally get around to doing mine 
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gt160
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Member No: #44878
Joined: May 19 2016Location: Exeter |
thanks this guide will come in handy when i finally get around to doing mine
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Laguna94
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 Member No: #52619
Joined: Dec 02 2018Location: Humberside |
Hi there thanks for posting this has it been running ok with the dexron oil as i have read that it is only supposed to to have a dealer supply oil in which is £30 a litre And on my old banger of a car thats a lot of money |
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Onefut
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Member No: #51895
Joined: Aug 15 2018Location: North Devon |
its been fine no issues at all Its the same spec apparently |
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Head
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Member No: #56375
Joined: Jun 29 2020Location: Birmingham |
Hi i bought cp4 picasso auto 2007 , and got few concers, gearbox shift slowly and when shift move me forward and backward. I saw now this post and i will check the oil in that tank. I make my registration today btw, can somebody explain me or give a link how to change and refil the oil in the gearbox. I do myself maitenance on the zf gearbox, but this is new "animal" for me. Thanks:). | ||||
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Fizzy
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 Member No: #57503
Joined: Jan 10 2021Location: Bristol |
A word to the wise of this forum. I tried refilling my actuator resevoir with ATF Dexron III as recommended above and had serious issues immediately. The actuator was making really nasty noises. I noticed that the Dexron had split from the 'hydraulic oil' that was already in the resevoir so then had to syphon it all out. I replaced it with Revenol GHA-F and all is well. Correct me if I am wrong, but ATF Dexron III is transmission fluid, not hydraulic oil ?? The Actuator uses hydraulics? |
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Ap0qalypto
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  Member No: #52161
Joined: Sep 21 2018Location: Republic of Serbia |
Actuator uses hydraulics | ||||
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littleimp
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 Member No: #58798
Joined: Sep 16 2021Location: Essex, UK |
Gearbox actuator oil SELENIA oil TUTELA CAR CS SPEED SAE 75W Part number 9979.A4 |
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filip0s
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Member No: #61968
Joined: May 15 2024Location: Poland |
Hello, Sorry for digging out this old topic. I would like to change the actuator fluid in my C4 Picasso but I've got a very simple problem. How to drain the old fluid? I've got a syringe and a 6mm clear tube as Onefut suggested. The problem is that...there is no way I can put that tube in! When I take the lid there is this piece of plastic (I guess the filter?) blocking the way in. I really can't figure out how to put the tube into the reservoir. Would you be able to share some more details about this? Thank you! |
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WayneL
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Member No: #61391
Joined: Nov 15 2023Location: Taunton |
First attempt failed. I managed to put my tube into the tank, however the syringe can not suck up the fluid, seems the viscosity is much higher than it can handle. | ||||
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Ap0qalypto
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Member No: #52161
Joined: Sep 21 2018Location: Republic of Serbia |
Check this video, it might help you - Click Here - |
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WayneL
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Member No: #61391
Joined: Nov 15 2023Location: Taunton |
Yeah i did watch that video. Basically we're doing the same things but the only thing is I don't want to melt down the filter block there. | ||||
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