The specs state the crank bolt (27mm) on the crankshaft should be torqued to 300ft lbs/400nm torque on my 92 400se.

I have several torque wrenches, but none that will torque at this high of a value.

Do you think I can give a long breaker bar a good "heave hoe" and call it good, or should I be concerned about bringing the bolt to the correct torque spec.

The price of a torque wrench that will accomplish 300ft is very expensive and I don't think I'll have much use for it after chaning the water pump.

Russell

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Russell McMahon
Tulsa, OK
2001 CLK 320
1992 400se
1993 400e
2000 320ML

Check with a local rental yard and see if you can obtain a "torque multiplier." It has been a long while since I needed to use one so I cannot say if they are still available, I do know that I rented it due to cost.

If you are unable to locate one then perhaps a heave hoe will do..............you do the heave and I'll do the hoe

Find a sturdy pipe that will slip over the handle of your 3/4" drive breaker bar. Stand on the pipe according to your weight. E.g., if you weigh 150 lb, stand 2 ft away from the socket center. If you weigh 200 lb, stand 1.5 ft from the socket. When the socket no longer turns, you are at spec.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7

yep, that's just what I did when I rebuilt my 617. You're pretty smart sbourg - how'd you know I weigh 200lb??

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.

[QUOTE=Pete Burton]yep, that's just what I did when I rebuilt my 617. You're pretty smart sbourg - how'd you know I weigh 200lb??[/QUOTE


Good try, maybe get close, but wrong thinking. Your method assumes the bolt will stop turning at the specified torque. Probably not.

Mark

>Your method assumes the bolt will stop turning at the specified torque. Probably not. >>

That is the whole concept ... when the bolt stops turning , you have attained that specific torque...if it does not stop, you do it again until it does...

Of course, thank you Arthur.
regards,
Mark