1982 300SD, 154k

Had a puddle directly underneath the front of the engine, behind the radiator, so am thinking it's the pump. It's dripping down the front of the oil pan, didn't see any coolant on the rad hoses, will look more closely after I clena it up to see where it's coming from.

Anyone had problems using a NAPA waterpump? $51.99 is the cost. If not, which one from Fastlane, Laso for $80 or Geba for $51.

Anything else I should change while I'm at it? Thermostat, etc?

Also, I recently had it in to my mechanic for AC service, and they told me my fan clutch is shot, and recommened I replace it. Any suggestions on where to buy? Fastlane?

Thanks,

Adam

if you can get an angle on it you should be able to see it coming out the weep hole. no advice on a brand. i like the cast blades over the pressed stamped steel.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I would use nothing but a rebuilt pump from the factory. Maybe the ones from Fastlane are - don't know. Heard of too many folks who used an aftermarket pump have overheating problems because the impellers don't have the same clearance as the originals and don't move the coolant like they should. A rebuilt from the factory should not be any more than you mentioned, but of course, it's been awhile since I bought one.

Len

I would also like to know which one is reccommended, as I am going to change mine out. One is more $ than the other, but I don't want to have to change it again for a lot of miles.

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1985 300D California w/cat. (257,000 + Miles)
1980 300SD (208,000 + Miles)

I think I put a laso on mine last July when I replaced it. The old one was weeping, clanking like cans, and looked real corroded.... The Laso one has worked perfectly ever since.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Updated info.

I haven't replaced the pump yet, as I have not seen any coolant leaking since the first discovery. Any thoughts as to what would cause coolant to leak and then go away?

Adam

extra pressure on a tiny leak may have caused a one-time leak, but you'll probably see it again. Look carefully at the weep hole and the hoses, good chance you find it. Also, if you replace the water pump, it's a perfect time to replace that short hose (roughly 2" long) between the water pump and thermostat housing. The thermostat gasket gets real hard and can leak also. Use lots of penetrant on the T-stat housing bolts first.

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.

the above post.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Replace the water pump, Laso is what I just installed, bronze impeller.
And the price is not worth the few $ difference.
Fix now, or pay the tow.
When mine went out, (like yours slight leak, then quite),then it was a gusher.
I think this is what is called a PM (Preventive Maintenence).

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1985 300D California w/cat. (257,000 + Miles)
1980 300SD (208,000 + Miles)