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#1
03-26-2007, 11:25 AM
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Front crankshaft seal replacement
I have an 82 300D that needs the front seal replaced. I have removed the fan and shroud. Unfortunately, to remove the front bolt takes an impact and there is no room, unless I remove the radiator and a/c -which I do not want to do. Is there a way that I can safely keep the engine from turning as I use a socket to loosen the bolt on the front pulley? After this, I am certain I can remove the old seal / follow the directions I found in this forum to install a seal using an 8oz yoghurt cup (thank you for this one!) as a seal guide installation tool.
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#2
03-26-2007, 11:28 AM
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Wedge a breakerbar under the frame rail and use the starter to break it loose. Do you have a harmonic balancer puller? That balancer is not easy to remove once the bolt is out.
__________________
Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section
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#3
03-26-2007, 02:21 PM
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Remove the pulley and vibration damper by removing the six socket head cap screws. That will leave the balancing disc still attached to the crankshaft. The balancing disc has a couple of notches in it. Jam the disc with a chisel or 1/2" extension bar through a notch and under the oil pan lip so that the crankshaft will not turn. (You will need to use this procedure to tighten the crank bolt also.)
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#4
03-27-2007, 07:19 AM
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Quote:
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#5
03-27-2007, 10:40 AM
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Quote:
__________________
Seth 1984 300D 225K 1985 300D Donor body 1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!! 1980 300SD 311K My New Baby. 1979 BMW 633csi 62K+++? Dead odo
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#6
03-28-2007, 08:02 AM
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Quote:
A pipe and a breaker bar. When replacing the harmonic balancer, PROCEED WITH CAUTION. Many a 616/617 crankshaft has been destroyed by following the procedure that would be used on a keyed shaft. This one has no key, it has two steel dowels. You will have to put the balancer on with the dowel holes aligned perfectly and then tap the dowels in place. If they will not go in place with light tapping, pull the balancer and put it on again. It might take fifty times to get it aligned properly. If it takes fifty times so be it. This is a job for lots of patience.
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#7
03-28-2007, 11:30 AM
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Larry is absolutly right on that. Also beware of putting the balancer on 180 degrees off.
__________________
Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section
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#8
03-28-2007, 12:06 PM
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Mark the balancer with paint or something to get it in the correct position in case some thing moves while you are doing the seal replacement.
__________________
RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K 90 Dodge D250 5.9 Cummins/5 speed. 400K Gone and still missed...1982 w123 300D, 1991 w124 300D
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#9
03-29-2007, 02:33 AM
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http://www.peachparts.com/shopforum/showthread.php?t=135541&highlight=300td+front+crankshaft+seal
I discussed the exact job, plus some more for the front seals in a "while your there" type of post. Dave
__________________
1970 220D, owned 1980-1990 1980 240D, owned 1990-1992 1982 300TD, owned 1992-1993 1986 300SDL, owned 1993-2004 1999 E300, owned 1999-2003 1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD 1988 560SL, 100,000mi, owned since 1995 1965 Mustang Fastback Mileage Unknown(My sons) 1983 240D, 176,000mi (My daughers) owned since 2004 2007 Honda Accord EX-L I4 auto, the new daily driver 1985 300D 264,000mi Son's new daily driver.(sold) 2008 Hyundai Tiberon. Daughters new car
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