As I was pulling the cylinder head on my '91 300CE I bent a pipe that I had not noticed that was still attached. The pipe goes from the water pump, under the intake manifold, where it was bolted, to what I think is part of the cruise control. The pipe might be salavageable, but I thought that I wouldn't take the chance. I ordered the coolant pipe from the heater exchange to the coolant pump but that was the wrong one. Can anyone tell what I need?

PIcture??

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I'll try to get some soon.

jmerc6, the line you bent is a coolant line which runs under the intake manifold to the oil cooler, according to my Haynes Manual. Be sure to replace the O-ring where it attaches to the water pump.

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Fred Hoelzle

I agree from your description, there is a coolant pipe from the water pump to the oil filter/cooler. Whats odd is that my manual states its only for Australia (code 625).

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'86 300E 5 speed
'71 Triumph TR6
'46 Cushman Scooter
'41 Ford 9N tractor

Okay. I've got the picture, but I don't know how to load from my computer to the message board.

When you hit reply to thread, underneath the text box are "Additional Options".

The second option is "Attach Files", click on "manage attachments"

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Thanks for the guidance. Here's the pic. When I looked that the coolant pipe at Allexpress, it doesn't look like the same pipe.

Cooling water line return from oil filter to water pump

Part# 104 200 05 52 (old part# 104 200 03 52)

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'86 300E 5 speed
'71 Triumph TR6
'46 Cushman Scooter
'41 Ford 9N tractor

Thanks, I'll call and order the part today!

That's a beefy steel pipe, and coolant pressures don't get above 16psi. I seriously doubt you have damaged it enough to really need a replacement. As long as you can get it back to its original shape and the ends mate properly, I'd say keep it.

-tp

I had to cut off the intake mounting bracket. Do you think that there would be a vibration problem?

Oh, I didn't realize you had to cut the mounting bracket. I can't really say if there would be too much vibration or not. As long as there wasn't enough movement to unseat the O-ring, then you should be okay, but I am less sure of this now than I was before I knew the mounting bracket was history.

At this point you really would want to weigh the cost of a new one versus the pain of having to re-do it later.....

If in doubt, get a new one unless it is big $$. That might be a junkyard part... How hard to weld a new bracket on?

-tp

I just got a price on a new pipe $200!! I think I'll try to fix the old one.

Try Phil, click on "Buy Parts" at the top of this page and phone or email him. He also helped me locate used parts.

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'86 300E 5 speed
'71 Triumph TR6
'46 Cushman Scooter
'41 Ford 9N tractor