Question about 1990 Mercedes-Benz 300 Diesel
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Posted on Jan 02, 2017
SOURCE: 95 neon head gasket step by step
Yes, a machine shop is the best way.
A warp can be so slight that you won't see it with out the proper equipment.
Just make sure to tell them, you want an estimate before anything is done to it.
If it is warped, they can do a shave to straighten it.
They can also check your valves and valve seats while it is in there.
Posted on Oct 19, 2008
I would highly recommend that you go to the local parts store and purchase a Haynes Manual for your vehicle, they are around $ 25.00 Canadian. As when you do your head gasket you wil need to remove your timing belt and this is a procedure in it's self. then you will neen certain torque settings. This manual will provide you with all of this information step by step. they are designed for the do it yourselfer. They also cover many other issues that you may come across through out the ownership of your vehicle. I know that the last ting you need is an added exspence but these manuals are well worth the small investment. There is a site that you can find hrough google search that you can find factory service repair manuals for your vehicle, however they only have a layout for a 4 cylinder engine in there drawings and this is alot different then the 6 cylinder. As the procedure for repairs is totally different. I hope that this helps and that you take the time to rate any solutions you receive. Good Luck.
Posted on Oct 29, 2008
SOURCE: oil leak
I've never seen a cracked block leak oil. Have problem verified so there is no "or" in your problem. As far as first time jobs, a head gasket on a mercedes is not where to start learning. If its a valve cover gasket, yes try it...otherwise have a quallified pro do the work.
Posted on Apr 21, 2009
frajogag: First off, be aware that these bolts are "torque to yield" bolts (streach bolts). What this means is that instead of torqueing the head bolts to a specific torque specification, they are torqued down to a set spec and then tightened by rotating the bolts a certain angle, like 90 degrees. and all of them are turned the same amount.
This means that the shanks of the bolts must be checked to make sure they are not too thin (or the bolt has already stretched beyond limits and is prone to snap if used)
Here is how you check the bolts. Measure the bolt using a micrometer, at the base, or within the first 13mm from the end where it threads in. Then go to about 10mm before the threads end heading toward the top of the bolt. There should not be more than a 0.23mm (.0091 inch) or less difference or the bolt should be discarded.
Torque the bolts down to 98.1Nm ( 72.ft lb)
Looking at the head from the side, so you are looking at the full length from side to side, I will number the head bolts in this fashion.
#1 & 2 are directly in front of you and in the center of the cylinder head crossing it width wise.
#3&4 are to the left of #1&2, / #5&6 are to the right of #1&2
#7&8 are to the left of #3&4 / #9$10 are to the right of #5&6
Now, you have the sequence.
After the initial pull, back off all the bolts in the same sequence and then retorque them to 36 Nm ( 28 ft lb)
Using a torque angle wrench or having the ability to accurately judge turning angles. Rotate (clockwise) to a 75 degree angle. do this to all the bolts using the sequence I had provided.
Rotate the bolts (clockwise) 75 degrees again on all bolts in the same sequence. The proceedure is complete!
Posted on Apr 23, 2009
First the sensor in the rear gearbox may be bad or corroded for sensing wheel speed. Also the engine wiring harness may be falling apart. From 1991-1995 the US made MB use biodegradable material on the wiring. When the insulation cracks you get shorts in the system. The same wires are in your EHA on the air inlet area. Check and replace as needed.
Posted on Jun 16, 2009
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