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 6.3
 removing the radiator
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ilpatino

Belgium
339 Posts

Posted - 05/02/2011 :  03:18:52  Show Profile  Reply with Quote
Hi all,

I'm planning on removing the radiator next weekend to gain access to some coolant-hoses and to clean the front of the engine.

Can anyone give some usefull tips on how to do the job correctly?

thanx!

Gunter

w109 6.3 #1452 '69
s124 300 TDT '90
Skoda Superb '09

Art Love

Australia
6226 Posts

Posted - 05/02/2011 :  05:28:49  Show Profile  Reply with Quote
Gunter,
There is nothing special that I know of. Before you do the job, order a replacement mounting kit, 108 586 00 50, so you have it ready for reinstallation. It consists of the 2 rubber rings and the rubber mounts on either side of the unit. There is a drain cock at the bottom for the water. You will need to release the radiator shroud by finding and releasing the 4 bolts that hold it to the radiator. There are 6 hoses to consider, 2 water, 2 oil and 2 for the automatic transmission cooler lines. You have to release all 6 and have some system for plugging the oil lines. Generally, just elevating the ATF lines and tying them up as far as they will reach to an adjacent structure stops them leaking too much, but you need to expect spillage and have a plastic or metal large dish or trough. When the 4 lines and the two radiator hoses are disconnected, the radiator lifts upwards after you have released the two rubber rings. I have found old water hoses to be difficult to move and old radiators very difficult to move. Having a second person to help both with keeping the radiator square at both ends and with the lift is helpful. That is all I can think of at the moment, I'm sure others will have things to add to or to correct what I have said.
Art
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juan

USA
106 Posts

Posted - 05/02/2011 :  06:51:36  Show Profile  Reply with Quote
Before you pull the radiator up, there are two bolts that hold the oil radiator to the water radiator. Loose them up to release pressure against the frame so that if slides more easily when pulling.

Juan
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ilpatino

Belgium
339 Posts

Posted - 05/02/2011 :  09:01:27  Show Profile  Reply with Quote
Art, Juan, thanx for the input.

Art, I've found following partn° on epc-net; A108 500 00 12 (repair-kit radiator mounting)

can you confirm that that is the correct (current) number?

thanx!

Gunter

w109 6.3 #1452 '69
s124 300 TDT '90
Skoda Superb '09
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Chris Johnson

USA
3751 Posts

Posted - 05/02/2011 :  11:43:53  Show Profile  Reply with Quote
This is the time to replace the water hoses connecting the water pipes between the heads and the big pipe and the back of the thermostat housing. It would also be good to remove the water pump from its manifold to inspect the manifold for corrosion. I'll see if I can get a good picture of the typical corrosion in the manifold.

If you are feeling really adventurous, this would also be the time to replace the front crankshaft seal.

You will have to remove at least one of the big pipes at the cylinder heads in order to get the hose between them out. Note that it is very common for these hex. socket screws to be very tight in the heads, so clean out the sockets completely so that the hex. bit will fit all the way down into the recesses so as to not strip them. The large water pipes between the heads are frequently in poor condition because of corrosion, so it is best to remove both of them so that you can inspect them.

Chris Johnson
If you aren't constantly impressed with your car, then it needs fixing.
100.012-12-000790
100.012-12-000867
www.300SE.org
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Art Love

Australia
6226 Posts

Posted - 05/02/2011 :  18:53:30  Show Profile  Reply with Quote
Gunter,
I went down and had a look at a repair kit in my garage and can confirm that the number you have is the correct current number. I should pencil it into my Parts Manual.
Art
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Art Love

Australia
6226 Posts

Posted - 05/02/2011 :  19:41:33  Show Profile  Reply with Quote
The pipes that Chris refers to are seen in the middle of this picture below the junction between the left and right inlet manifolds. Not only are the hoses often neglected because they are difficult to get to (I presume they are among the ones you intend to replace), but the pipes are severely corroded. Two of the hex socket bolts that Chris refers to are seen in profile just above the timing chain above the distributor. There are another two for the larger pipe on the right that are just as difficult. I'd suggest you soak them with your favourite antiseize for a day or two before you do exactly what Chris suggested about removing them. Both the left and right pipes were available new fairly recently, so if yours are bad, I suggest you replace them as I have obviously done in #765 as well as replacing the hoses. The thermostat is off in this view (it's sitting on the right front guard/fender above the windscreen washer reservoir). Replace it as well if it is corroded. Unfortunately, the long narrow pipe that runs from the water pump back to the rear of the motor to the heater is not available new for the 6.3 after #500.








Art
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abl567

Australia
930 Posts

Posted - 05/02/2011 :  20:09:23  Show Profile  Visit abl567's Homepage  Reply with Quote
The prices for those parts will make your eyes water, I recently priced the shorter one on the front of the left head, $1655.00 US

300SEL
6.3 #2723, my first classic Benz
3.5 #8659, my second.
2 to go...
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Art Love

Australia
6226 Posts

Posted - 05/02/2011 :  20:22:38  Show Profile  Reply with Quote
Something crazy has been done to those prices. They were not even a quarter of that price 3 years ago as best I recall. The picture I posted lacks detail at less than 80Kb, so I have been fiddling to get a cropped view. Here it is.




Art
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Chris Johnson

USA
3751 Posts

Posted - 05/02/2011 :  21:41:47  Show Profile  Reply with Quote
quote:
The prices for those parts will make your eyes water, I recently priced the shorter one on the front of the left head, $1655.00 US


Something is wrong with that. I bought that exact same part a couple of months ago for $125 US.

Chris Johnson
If you aren't constantly impressed with your car, then it needs fixing.
100.012-12-000790
100.012-12-000867
www.300SE.org
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abl567

Australia
930 Posts

Posted - 05/02/2011 :  21:49:18  Show Profile  Visit abl567's Homepage  Reply with Quote
Here is Tom's reply to my request 1/21/2011, maybe the part number is wrong?

2. Heater return line A1005000272 (I think this is NLA but
thought I’d ask) Can't get it.
3. Coolant elbow for front of left hand head (A1002000018?)
good number $1655.00
4. Coolant elbow for back of right hand head 100-200-13-52
$505.00
5. Fuel supply line to injection pump from front damper, the
steel line 100-070-08-32 not available
6. Copper plated lock nuts for exhaust and inlet manifolds, 32
pieces 000-990-32-50 $2.40 ea
7. Suspension Compressor oil supply line 005-997-25-82 $157.00
8. Air Filter 000-094-58-04 $47.00
9. Oil Filter 000-180-04-09 $39.50 !!!!


300SEL
6.3 #2723, my first classic Benz
3.5 #8659, my second.
2 to go...

Edited by - abl567 on 05/02/2011 21:49:43
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Art Love

Australia
6226 Posts

Posted - 05/02/2011 :  22:17:12  Show Profile  Reply with Quote
Ant,
That is not the right part number. Should be 100 200 09 52. I don't know what 100 200 00 18 is because there is nothing like it in my Parts Manuals even though Tom said it is a good number. He also confirmed to you that the heater line for the 6.3 is not available, even though the similar lines in 2 or 3 versions for the 600 are.
Art

P.S. Maybe he went on your description rather than the number and hit the 5 key twice when he was typing - I do things like that.

Edited by - Art Love on 05/02/2011 22:22:07
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abl567

Australia
930 Posts

Posted - 05/02/2011 :  23:05:05  Show Profile  Visit abl567's Homepage  Reply with Quote
Art,
According to the EPC on the MB Clubs site 100 200 0018 replaced 100 200 09 52 and shows the elbow in question in the part image (#177)






I'll email Tom and ask the question as I'd like to replace this part while the heads are still off #2723

300SEL
6.3 #2723, my first classic Benz
3.5 #8659, my second.
2 to go...

Edited by - abl567 on 05/03/2011 02:37:37
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Art Love

Australia
6226 Posts

Posted - 05/02/2011 :  23:12:45  Show Profile  Reply with Quote
There you go, I'm out of date. Must be the second explanation.
Art
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abl567

Australia
930 Posts

Posted - 05/02/2011 :  23:17:20  Show Profile  Visit abl567's Homepage  Reply with Quote
Notice the part underneath it, the elbow for the back of the right head, $505.00, two typos?
Again I'll ask the question as Chris said he purchased the part for $125

300SEL
6.3 #2723, my first classic Benz
3.5 #8659, my second.
2 to go...

Edited by - abl567 on 05/02/2011 23:17:50
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Chris Johnson

USA
3751 Posts

Posted - 05/02/2011 :  23:34:36  Show Profile  Reply with Quote
quote:
4. Coolant elbow for back of right hand head 100-200-13-52
$505.00


I hope that is wrong as well. I bought the 600 version of the pipe a couple of months ago for $52. The 6.3 line is identical except that the line points sideways rather than downward.


Chris Johnson
If you aren't constantly impressed with your car, then it needs fixing.
100.012-12-000790
100.012-12-000867
www.300SE.org

Edited by - Chris Johnson on 05/02/2011 23:35:05
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