Dinan power pulley woes

E92Brembo · 03-22-2016, 04:00 PM

Omg this thing is hard to get on. (PowerSteering/AC belt)

Any pointers?

pbonsalb · 03-22-2016, 04:25 PM

They have a reputation for tight belt fit. I would try pre stretching the belts. I have leveraged and pried belts before and also hung weight from them. Block on bottom of jack to block on top of jack and then raise jack. You may have to be creative. 1/4 inch would probably help.

E92Brembo · 03-22-2016, 10:46 PM

Thanks. I'll give it a whirl

JsL · 03-23-2016, 01:11 AM

It's easier with two people. Get a buddy to wrench down on the tensioner pulley while you slip the belt over the dinan pulley. Of course, don't exert too much force to damage the tensioner pulley, but max it out to give you enough slack on the belt.

///M Roger · 03-23-2016, 03:30 PM

Is the belt so tight that the tensioner doesn't do its job? If so, that's gotta be bad for the bearings.

E92Brembo · 03-23-2016, 03:58 PM

Quote:

Originally Posted by pbonsalb

They have a reputation for tight belt fit. I would try pre stretching the belts. I have leveraged and pried belts before and also hung weight from them. Block on bottom of jack to block on top of jack and then raise jack. You may have to be creative. 1/4 inch would probably help.

This (jack trick) worked. Thanks!

E92Brembo · 03-23-2016, 04:00 PM

Quote:

Originally Posted by JsL

It's easier with two people. Get a buddy to wrench down on the tensioner pulley while you slip the belt over the dinan pulley. Of course, don't exert too much force to damage the tensioner pulley, but max it out to give you enough slack on the belt.

No way to get the thing on without stretching it first. Me and my buddy, both over 200lbs and in shape couldn't get it. Just needed to be barely an 1/8" longer. What a pita.

03-22-2016, 04:00 PM	#1
E92Brembo First Lieutenant 55 Rep 380 Posts Drives: '11.5 E92 ZCP DCT Join Date: Mar 2013 Location: Florida iTrader: (0) Garage List 2011 BMW M3 ZCP [0.00] 2010 BMW 335i Coupe [0.00]	Dinan power pulley woes Omg this thing is hard to get on. (PowerSteering/AC belt) Any pointers? __________________ 11.5' E92 ZCP DCT 10' E92 335i M-Sport 6MT 03' E46 Dinan S2 SMG
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03-22-2016, 04:25 PM	#2
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	They have a reputation for tight belt fit. I would try pre stretching the belts. I have leveraged and pried belts before and also hung weight from them. Block on bottom of jack to block on top of jack and then raise jack. You may have to be creative. 1/4 inch would probably help.
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03-22-2016, 10:46 PM	#3
E92Brembo First Lieutenant 55 Rep 380 Posts Drives: '11.5 E92 ZCP DCT Join Date: Mar 2013 Location: Florida iTrader: (0) Garage List 2011 BMW M3 ZCP [0.00] 2010 BMW 335i Coupe [0.00]	Thanks. I'll give it a whirl __________________ 11.5' E92 ZCP DCT 10' E92 335i M-Sport 6MT 03' E46 Dinan S2 SMG
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03-23-2016, 01:11 AM	#4
JsL Major 448 Rep 1,263 Posts Drives: 2011 AW M3 ZCP Join Date: Dec 2013 Location: SF Bay Area iTrader: (2)	It's easier with two people. Get a buddy to wrench down on the tensioner pulley while you slip the belt over the dinan pulley. Of course, don't exert too much force to damage the tensioner pulley, but max it out to give you enough slack on the belt.
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03-23-2016, 03:30 PM	#5
///M Roger Enlisted Member 2 Rep 45 Posts Drives: 2011 E90 Alpine White M3 ZCP Join Date: Aug 2014 Location: CA Bay Area iTrader: (1)	Is the belt so tight that the tensioner doesn't do its job? If so, that's gotta be bad for the bearings.
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