Small Water Pump Outlet Hose Question - PeachParts Mercedes-Benz Forum

warmblood58 · #1 04-02-2011, 07:43 PM

Doing a water pump replacement and was wondering if I need to pull outlet in order to R&R small 40mm hose that is 2-3 inch long. If I pull outlet, I suppose there is a required gasket (which I do not have) Anyone done this recently and without removing outlet as well? This is on the OM617 engine '82 300 SD. Thanks Forum!

toomany MBZ · #2 04-02-2011, 08:04 PM

Not as I recall, if you don't disturb the water pump housing.

See post #3:

85 300sd Leaking coolant

warmblood58 · #3 04-02-2011, 08:12 PM

Quote:

Originally Posted by toomany MBZ

Not as I recall, if you don't disturb the water pump housing.

See post #3:

85 300sd Leaking coolant

I believe you might have misunderstood my post -I know that I do not have to pull small hose but want to while also doing water pump. My question is can I pull small outlet hose without removing outlet from block. Anyone know?

tangofox007 · #4 04-02-2011, 08:23 PM

Quote:

Originally Posted by warmblood58

My question is can I pull small outlet hose without removing outlet from block.

You need to remove the thermostat housing from the head. Paper gasket required.

http://catalog.peachparts.com/ShopByVehicle.epc?q=1982-Mercedes--Benz-300sd-Cooling--System&yearid=1982%40%401982&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6206%3AED%7C10000134%3AMBC%7C1510%40%40300SD&catid=240909%40%40Cooling+System&subcatid=240986@@Thermostat+Housing+Gskt%2E&mode=PD

warmblood58 · #5 04-02-2011, 09:01 PM

Quote:

Originally Posted by tangofox007

You need to remove the thermostat housing from the head. Paper gasket required.

http://catalog.peachparts.com/ShopByVehicle.epc?q=1982-Mercedes--Benz-300sd-Cooling--System&yearid=1982%40%401982&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6206%3AED%7C10000134%3AMBC%7C1510%40%40300SD&catid=240909%40%40Cooling+System&subcatid=240986@@Thermostat+Housing+Gskt%2E&mode=PD

dang, thanks tangofox!

tangofox007 · #6 04-02-2011, 09:05 PM

Quote:

Originally Posted by warmblood58

dang...

It's a really easy job, especially when the cooling system is already drained.

warmblood58 · #7 04-02-2011, 09:13 PM

Quote:

Originally Posted by tangofox007

It's a really easy job, especially when the cooling system is already drained.

Yep, but weekend and no gasket! I think the small hose was actually replaced about 5 years ago so I will proceed without removing outlet/hose after inspection of the small hose for bulging etc. - thanks! Now it looks like one of my pump bolts is missing -down in the Harmonic balancer I suppose . . . .