[carolina new be]

Wanted to share these images for reference
1 photo shows the tiny air bleed hole that is on the thermostat
2nd photo shows the improved "Zebra " clamps for the lower and upper radiator hoses

part number for the improved clamps is 000000-002775 this is for the 98 ML320

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[carolina new be]

Also I have a question about the radiator hose markings

On the aux water pump hose photo I know the white mark indicated with a red line
is where the grove on the air filter box line up with the hose to retain the hose> But where
does the white line on the end of the hose marked with black line line up with ?

Also the same question is for the upper and lower radiator hoses that have the white mark on
one end of each hose. What do they line up with ?

All 3 of the hoses are of the Valeo Brand

Thanks
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[Witek_M]

There are markings on water pump and radiator.

 

[carolina new be]

Witek_M
I am assuming the mark on the top radiator hose matches with a mark on the thermostat housing ?
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[Merzatt]

CNB, those marks are there so that the hoses are installed according to their curvatures without stretching or twisting.

Why are you replacing the thermostat? Did it overheat?

 

[carolina new be]

I am doing some PM with hoses and breather cover hoses and I had a leak on the "Y" hose from expansion tank to back of engine . The hoses are probably original and car has 300,000 + miles on it so with hoses being replaced I went ahead and ordered a thermostat

I see where the 2 bottom hoses match up with marks on the water pump housing ( thanks Witek_M ) and assumed there is a mark on the thermostat for the upper hose to match with

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[Merzatt]

If you have time, test the thermostat with this method. But the cost of the thermostat is low, so you might as well do preventative maintenance.

 

[carolina new be]

where is the match mark on the thermostat for the hose to align up with ?