W126, BENZ AID - COMMON QUESTIONS AND ANSWERS

85 300D Vacuum Shutoff Problem

n/a123 1985 300D Turbow
Tested diesel shuoff valve as per instructions
Pumped up vacuum to 10, but was unable to shutoff engine and the vacuum dropped off rapidly. I did this three times with same results. Removed valve and inspected. It didn't appear to be leaking any oil.
Tested valve and it closed at 5 and held vacuum. Tested three times with same results. Pumped up to 10 and it held all night with no loss of vacuum.

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1985 300d front wheel bearings

Hi I replaced front wheel bearings and races as a set, used good quality parts. when trying to preload the bearings as stated in manual The nut tightened untill there was no more thread but the wheel still moved very freely. There did't seem to be any play. but it doesn't seem right. is there supposed to be a flat washer between the nut and outer bearing. There wasn't one but I remember seeing this on other cars

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