I was just wondering what the best way to remove the bottom(crankshaft, i beleive) pulley on an 88 240 Dl sedan. I loosened the ac already without realizing that it might be easier to loosten the bottom pulley first, due to the whole tension thing. UNfortunately i rounded off the ac nut a little and need to find a replacement, otherwise i would put that back on and just use the tension in the belts to hold the pulley. But since that is not the case i was wondering what trick or method exsists for holding the belts and or the actually pulley in place while i loosten the nut on it. ANy and all comments would be appreciated.
thank
Gary and Caylen Payne.

Please expain how do you loosten the bottom pulley first ?? what step do you do ?? bottom pully you mean the aircondtion pump driver belt ???? on top is the power steering ???


How many nut are they that you have to loosen on the airconditoin pump ::::???

How do you rounded off teh ac nut ??? poor grip from the wrench slipping off ??

if you have spary some wd40 would that have help removing the nut without rounding it ???

why I am asking this ????? becasue I am in the process off replacing the drive belt for the aircondition myself .... and like to learn much as I can

thank for your input ////

The pulleys are not removed to change the belt. The compressor mounting is loosened and then it is pivoted towards the engine to slacken the belt. There are 2 nuts top of compressor front and rear and then the adjusting bolt at side of compressor.

There may not be enough slack and turning the engine slightly may be necessary to stretch and slip the belt over the pulley rim.

This is the procedure for all belts except the AC one always seems to be bit tight coming off and on.
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David Hunter