[watchout-everyone]

Hello,

I am planning a game plan for changing the coolant pipe hose (Red) which is attached to the coolant feed pipe (Blue).

My plan was to remove the following:

1. Remove the U-sign coolant hose (Green) in order to reach the coolant feed pipe.
2. Take out the coolant hose (Red) attached to the 'coolant feed pipe' without taking out the pipe itself.
3. Replace the coolant hose (Red) then put back the U-sign coolant hose (Green)

View post on imgur.com

For someone who's changed this, is this a good idea or even possible? If not, what i plan to do instead is taking out the water pump, U-turn hose, then finally the coolant pipe hose or the pipe itself

[Ughandi]

Cant help you on install procedure, as my water-oil heat exchanger retrofit is ready but not installed yet. Will detail it when it's done before the new year.

...But you can certainly order just that hose (red) [CHE0496] . Big PITA to remove the clip that holds it on though (replaced that exact rubber hose on the ebay 528i feed pipe I had shipped). I could not have done so from under the car because in the infinite wisdom of the folks in Bavaria, they don't have 90° tangs on the clip to assist with install/removal. I put some change in the swear jar for sure.

I'd budget for the crush plate thing [11537534880] & a new gasket [11517514942] for (Blue) that are on the opposite end, as not removing (blue) before (red) may be effort-prohibitive. They are forgettably cheap. "while you're in there...".

In theory there's plenty of flex for you to remove (green) & (Blue) no sweat. No need to pull off the pump.

[watchout-everyone]

Originally Posted by Ughandi

Cant help you on install procedure, as my water-oil heat exchanger retrofit is ready but not installed yet. Will detail it when it's done before the new year.

...But you can certainly order just that hose (red) [CHE0496] . Big PITA to remove the clip that holds it on though (replaced that exact rubber hose on the ebay 528i feed pipe I had shipped). I could not have done so from under the car because in the infinite wisdom of the folks in Bavaria, they don't have 90° tangs on the clip to assist with install/removal. I put some change in the swear jar for sure.

I'd budget for the crush plate thing [11537534880] & a new gasket [11517514942] for (Blue) that are on the opposite end, as not removing (blue) before (red) may be effort-prohibitive. They are forgettably cheap. "while you're in there...".

In theory there's plenty of flex for you to remove (green) & (Blue) no sweat. No need to pull off the pump.

I really appreicate the input and will replace the two you mentioned. With that being said, i will look to take out the pipe (blue) so I can also replace the coolant hose (Red) more easily.

I saw a very helpful video on Youtube ShopLifeTV and noticed how difficult it really is to remove that clip you're talking about. I will try to either saw it off or use a knife to break it.

[Efthreeoh]

This should help.

https://www.e90post.com/forums/showthread.php?t=936250

[StradaRedlands]

You don't need to pull off the green u pipe.
The two bolts holding the blue onto the block are miserable to get re-started when you're putting the pipe back on.

[Ughandi]

Originally Posted by watchout-everyone

I really appreicate the input and will replace the two you mentioned. With that being said, i will look to take out the pipe (blue) so I can also replace the coolant hose (Red) more easily.

I saw a very helpful video on Youtube ShopLifeTV and noticed how difficult it really is to remove that clip you're talking about. I will try to either saw it off or use a knife to break it.

Not a problem, boss. I used hardened pliers and shimmy'd it backwards (not forwards) until a sliver of the clip's edge was off the rubber. Then just pried at the rubber until it came off.

Best of luck on the removal & installation. I'll be doing the install soon here after you...