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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCoolant Expansion Tank Replacement
Leading reported evidence
Use hose clamp pilers
Performed · outcome unconfirmed
No successful repair reported for this finding.
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1
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Performed · outcome unconfirmed
At 67 years old, not enough strength in my hand so I used hose clamp pilers.
Leading evidence: 'Use hose clamp pilers' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'small hose' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Disconnect hoses and drain plugs, etc' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suspected cause
Then you can clamp off #12 and probably the small hose near #4, drain as much of the coolant from the tank as you can, then remove the fill and vent hoses #10 and #14 to get to the bottom hose and remove it.
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Suspected cause
Biggest problem is typically access, but if you unbolt the tank you can usually muscle it around enough to do the job.
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Suggestion
You need to drain the coolant from the bottom first by disconnecting the hoses and drain plugs, etc.
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Suggestion
1) Will I need the vacuum system to refill or will 'fill / drive / cool off / refill' work?
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Suggestion
You will need to buy a vacuum tool like an UView to get all the air from the system prior of filling the coolant, also (IMHO), another tool that is important is a spring clamp tool to remove the sprint clamps from the coolant tank.
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small hose
No successful repair reported for this finding.
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Identified cause
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Read evidence and context
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Suspected cause
Then you can clamp off #12 and probably the small hose near #4, drain as much of the coolant from the tank as you can, then remove the fill and vent hoses #10 and #14 to get to the bottom hose and remove it.
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11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Planet-9: 1 discussions
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Generation: 20261026T120458Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My
2007 Cayman S
has developed a leak around the top seam of the expansion tank. I found some articles concerning a Boxter but nothing specific to the
2007 Cayman S
.
Can someone point me an article / video detailing the replacement of the tank? Also, anyone that has performed this task, please give me any tips / things I should watch out for. My new tank arrived and I've never seen so many connections for a coolant expansion tank...
Couple questions:
1) Will I need the vacuum system to refill or will 'fill / drive / cool off / refill' work?
2) I'm guessing to have on hand 2 gallons of antifreeze
3) Will access from under car be needed (remove panels)?
4) Any other parts that will be needed (as in ones that will probably break when removed)?
Thanks!
So this clamp is on the coolant expansion tank. Not sure how to remove. Really don't want to force and break it. All the other hose clamps are normal type. The 'blue' tap is on both sides.
Any ideas???
I haven't done it on the
987.1
, but the expansion tank is always at the top of the system. So typically what you can do is get a few hose pinchers and clamp off the hoses close to the expansion tank. Then suck out as much fluid as you can, remove & replace the tank, fill the tank, then remove the clamps. Biggest problem is typically access, but if you unbolt the tank you can usually muscle it around enough to do the job.
From the parts diagram looks like toughest part may be getting to the mounting bolt #9. Then you can clamp off #12 and probably the small hose near #4, drain as much of the coolant from the tank as you can, then remove the fill and vent hoses #10 and #14 to get to the bottom hose and remove it.
This is just general advice, though, as I've never done the job on that car. Someone may be able to help with more specifics.
Hope it helps, but please note the bit about me never having done it on the
987.1
, lol. So it's entirely possible I am missing multiple pieces of critical information
I would strongly recommend replacing the water pump and thermostat at the same time since you will be opening the coolant system anyway.
You will need to buy a vacuum tool like an UView to get all the air from the system prior of filling the coolant, also (IMHO), another tool that is important is a spring clamp tool to remove the sprint clamps from the coolant tank.
1) UView:
Uview Airlift Kit & Cooling System Replacement Parts (550000)
Simplify cooling system refilling and leak detection with Uview Airlift™ Kit. Works on cars, trucks, and off-road vehicles. Shop now at JB Tools!
www.jbtools.com
2) Spring clamp tool:
Amazon.com: Flexible Hose Clamp Pliers, Fits 0.39"-1.37" Clamps, Carbon Steel Body | Radiator Hose Clamp Tool with Ratchet Locking Mechanism; Corrosion-Resistant; One-Hand Operation; Cooling System Repairs : Industrial & Scientific
Buy Flexible Hose Clamp Pliers, Fits 0.39"-1.37" Clamps, Carbon Steel Body | Radiator Hose Clamp Tool with Ratchet Locking Mechanism; Corrosion-Resistant; One-Hand Operation; Cooling System Repairs: Hose Clamping Tools - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
Good luck!
I would replace the water pump but it only has three years on it. In a couple of years, I plan to start replacing all the rubber coolant hoses. Will pick it up then. Thanks for the Airlift link. That will definitely be added to my toolbox.
I was looking the new tank for the bolt location and looking at the car. I don't think I can reach that bolt from the top without removing several things (fuel rail being one of them). Will put car on jack stands Thursday and take a look from there.
Yeah, it's not for your exact car, but the
987.2
service manual has you going in from the bottom to get to the bottom hose, bottom electrical connector and that bolt. Then the rest from the top. Does not appear to require any other removal, but again this is not your exact car.
Like I said, if you clamp off as many hoses as you can and keep the coolant from draining you can prevent having to do a full drain and refill, but not sure how easy that's going to be.
Gubi, when you connect the UView vacuum tool, it sucks (literally) every drop of water from the cooling system, afterwards you put the hose on the large container and it fills the system with fresh 50/50 mix.
I have the Uview Airlift and that's not how it works. You need to drain the coolant from the bottom first by disconnecting the hoses and drain plugs, etc. Then you hook up the tool, suck the AIR out of the system, and the vacuum remaining in the system sucks in the new coolant so there are no air traps.
You use the Airlift with a system full of coolant it's going to spray coolant and air out of the
exhaust
tube and barely drain anything: it is not designed for that.
Following suggestion from Boristhespyder:
Pressing on both sides of the blue part of the clamp worked. At 67 years old, not enough strength in my hand so I used hose clamp pilers. Gently pressed in while pulling out.
Many thanks.
FYI: The bolt at the bottom of the tank is 13mm.
This is a source reference. Confirm exact model applicability in the original material.
