Turbo Cooling Hose Repair
Productive weekend. I had a small seepage in my Return Hose CYL 1-4 turbo cooling lines. Luckily at the very top. As you can see from below it was the small hose and both of the of feed line screws:
I had planned to have bmw replace both turbo cooling lines while doing an oil service last month, but it was a small fortune for such tiny leaks. I had the parts pre-ordered so I decided to just use the component hose from the whole return hose line (11-53-7-598-343, $58.85 at genuinebmwminiparts.com).
I had also orded and used:
Feed Line Screw (11-53-7-507-218, $5.24/ea)
Feed Line O-rings (11-53-7-593-308, $5.04/ea)
and various hose clamps, but needed the following for this small hose:
Return Line Hose Clamp, 21.3mm (11-15-1-726-339, $1.37/ea)
Hose Clamp, 15,3-18,5 (32-41-1-131-346, $2.65/ea)
I used the following clamping tool:
Knipex, 8-3/4", P/N: 10 99 I220. I did not clamp it as tight as the others in the vicinty, but I will monitor. The tool allows me to clamp further, but I felt they were over-tight which is the reason the hose was leaking. It all came out well, but noticed after clamping I could have pushed the hose up against the feed line screw block. I have more clamps if it becomes an issue. Oh, I did need a heat gun to warm up the new hose for easier removal from the return line assembly. I noticed in the new turbo cooling lines that the feed line screw is no longer used.
