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Old 11-29-2007, 09:20 PM
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unkl300d unkl300d is offline
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Join Date: Jul 1999
Location: San Francisco, Ca
Posts: 2,468
79 300D radiator replaced- tips

Bought a Valeo radiator. Seems to be made in Holland , sez holland ontop(?).

Anyway, this is a good oem fit. Removal of radiator is basic like what you read in Haynes etc. books.

Not much trans fluid is lost (auto trans) when disconnesting the trans coolant hoses. Pre-soak with liquid wrench. Put sandwich bag or condom over open hose end and point it upward. No trans fluid gushes at all.

Rad drains, pull clips off carefully. jiggle fan shroud around as needed to clear work space. no need to remove. Loosen the bottom driver's side oil cooler slip-clip that holds down the radiator bottom. (rad has slits on side to slip onto clip.) do not remove the bolt unless you want to spend lots of time nashing your teeth lining it up to the attached nut later.

Do remove the top slip clip and bolt completely.

Once ready install new radiator. Slip it down over the oil cooler clip. Install the retainer clips at front top. then You need to get under the bottom slip-clip with a thick screw driver or pry bar.
Have one person hold down the radiator top while other aligns level the slip clip and uses pry bar to force the clip up the radiator side -slits until it is seated level.

The retighten the bolt. Not too tight.Don't want to bust your new radiator's side.
Now fit on the top oil cooler-to-radiatior slip-clip and see if the bolt aligns with the attached nut. If not, get a plier and gently crimp down the bottom ends in order to level the sides of this clip. When you removed it, it may have spread the sides apart a hair. Then your bolt will align with nut thread w/o stripping.

You may find that the oil cooler wiggles a bit loose on the new radiator. I found a horse shoe shaped washer and installed just behind the nut on that top slip-clip. Then tightened the retaining bolt just enough. That filled the small gap and held the two cooling cores tight.

I also had to shave a tiny bit of excess plastic from the edges of the filler opening in order to slip the rad cap on.

recheck hose clamps. do not over tighten. recheck trans fluid level. burp car.

Nice radiator. Just like the old Behr.

2 guys= 1 hour. no need to jack car up for height.
__________________
1979 300D 220 K miles
1995 C280 109 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles SOLD
********************
1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD
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