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#1
04-28-2011, 04:23 PM
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Fan Clutch 300 SDL
Has anyone ever changed one? Is it a PITA to do? Mine has decided to stay on all the time.
From what I can see I need to do the following Pull Fan shroud pull fan from hub pull hub from drive Reverse the process. Is that all or it there more too it?
__________________
86 300SDL. 250,xxx on #14 Head. One eye always on temp gauge.  . Cruising towards 300K
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#2
04-28-2011, 06:08 PM
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You loosen the fan shroud, it can't come out until the fan is removed.
-J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket  Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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#3
04-29-2011, 09:10 PM
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Can I remove the fan and hub together by removing the allen head screw in the center of the clutch?
__________________
86 300SDL. 250,xxx on #14 Head. One eye always on temp gauge. . Cruising towards 300K
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#4
04-29-2011, 09:28 PM
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yes....remove the hex bolt and it will come off together. I use a hex wrench taped into a length of copper tubing that extends it above the radiator to remove the bolt. Works well. simple. 87 300SDL.
__________________
 Western NC1987 300SDL W126 Turbo Diesel 335,000 + miles 1976 300D W115 275,000 miles+
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#5
04-29-2011, 09:28 PM
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Yes, that's how you remove it. If you leave the belt on it works well as a counterhold.
-J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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#6
04-29-2011, 11:30 PM
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I just replaced mine on my 94 S350D. I was able to get on the bolt (8mm Allen wrench) without pulling the shroud. The torque on mine is 45nm so you need to get a good grip on the belt when you torque it back down. The clutch on mine is held in place with 3 10mm hex bolts. I always blue locktite turning bolts in place also. Hate to have the fan come off on you.
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#7
04-29-2011, 11:59 PM
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Strap Wrench...I could not get the belt to grip the pulley well enough when trying to undo the hex bolt. Picked up a $6.00 Harbor Freight rubber strap wrench...pulled the belt off the pulley. Strap wrench worked great. Also put a 10mm long socket on a long 3/8" extension and slid it over the end of the hex wrench for more leverage.
Re: Fan shroud. Just unclip the top clips lift and slide an inch or two toward the motor. When the fan is loose pull them out together. Mount the clutch to the fan while out of the car. R & R is reverse. 2nd the lock-tite application. I once had the bolt back out...ugh
__________________
 1986 300SDL 440,xxx
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#8
05-01-2011, 12:56 PM
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Compu. It is a ten mm allen head I need? Is the blue loctite enough or should I use the red?
__________________
86 300SDL. 250,xxx on #14 Head. One eye always on temp gauge. . Cruising towards 300K
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#10
11-13-2013, 11:43 AM
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Can someone post a picture of the fronf of their installed fan clutch?
I just did mine and am trying to confirm i placed the diamond shaped piece towards the radiator correctly.
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#11
11-27-2013, 07:10 PM
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I don't know what diamond shaped piece you're talking about. The bimetallic strip faces the radiator.
Sent from my iPhone using Tapatalk
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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