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Old 01-15-2005, 01:53 PM
kashbaugh's Avatar
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Join Date: Jun 2003
Location: Stone Mountain, Georgia
Posts: 69
Therm. housing-water pump housing connect


Some of my terms may not be propler, but I only have a Haines book for reference!

I have an '85 300TD. Here is my tale of woe . . .

Replaced my water pump with no major drama, and also rpl'd the thermostat while I was "in there". Only took two leak-tests to get everything set.

Except for the approx. 2.5" diameter piece of hose that connects the thermostat housing to - I guess it's the water pump housing or something on the side of the block. With everything back together I can't see exactly and the book is useless for this.

So my question is, does anyone have any experience replacing this short - 2 inch or so? - piece of hose? Will I have to remove the thermostat housing in order to replace this? Or is there some way to convince it in place without this?

Any suggestions before I tear into it will be appreciated!!!


74 Porsche 914 2.0 - 92k and counting
85 300 TD - 263k and counting
83 300 TD - 190k and counting
74 Harley Davidson Superglide - 38k and counting
68 Harley Davidson Sportster - currently in kit form
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Old 01-15-2005, 02:00 PM
Jimmy Joe's Avatar
peace out
Join Date: May 2004
Location: California central coast
Posts: 1,004
It is much easier to get that hose on with the t-stat housing off.
But should be no problem; the gasket should be fine to re-use.
Think Alternative Energy!
300CD '80 (now gone but not forgotten...)
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Old 01-15-2005, 08:52 PM
dieseldiehard's Avatar
Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,310
That short, 3 or 4 in section of hose is best changed with the WP housing off. I have a little less than a meter of the hose left, MB only sells it in meter lengths. contact me PM if you need some.
That said, I have never seen this hode fail but YMMV
'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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Old 01-15-2005, 09:01 PM
boneheaddoctor's Avatar
Senior Benz fanatic
Join Date: May 2004
Location: Hells half acre (Great Falls, Virginia)
Posts: 16,007
I took the old piece went to the parts store and looked for the shortest preformed hose with a straight section that size.....cost about $8 if I remember but that was over and done with....just took masking tape laid out two cuting lines adn used a single edge razor to cut it out.

Proud owner of ....
1971 280SE W108
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