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Are my belts and pulleys correct? #1909438 09/09/15 07:29 PM 09/09/15 07:29 PM
Joined: Jan 2003 Posts: 524 B BigAg OP mopar
BigAg OP mopar B Joined: Jan 2003 Posts: 524	Hooked up the belts and pulley for my 71 charger over the weekend. Engine is a 400. The service manual that i have is a little vague on the setup. Do I have this correct? I noticed on some pictures online that some people have what i think is a belt tensioner? Do I need this or do you keep the belts tight by putting pressure on the alternator and power steering pump while you tighten the bolts? FAN and belts Top View of Belts

Re: Are my belts and pulleys correct? [Re: BigAg] #1909451 09/09/15 07:48 PM 09/09/15 07:48 PM
Joined: Jan 2003 Posts: 28,068 Irving, TX feets Senior Management
feets Senior Management Joined: Jan 2003 Posts: 28,068 Irving, TX	They look normal to me. Some cars had belt tensioners but most of mine did not. My Imperial has the AC compressor hugging the left head and the alternator a bit farther right than yours. The two belts jump that span without a tensioner or idler. If they're not perfectly matched they will come off with enthusiastic driving. We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon

Re: Are my belts and pulleys correct? [Re: BigAg] #1909460 09/09/15 08:02 PM 09/09/15 08:02 PM
Joined: Jan 2003 Posts: 25,894 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,894 Rio Linda, CA	Originally Posted By BigAg Do I need this or do you keep the belts tight by putting pressure on the alternator and power steering pump while you tighten the bolts? You'll notice that the P/S bracket has a 1/2" square hole near the pivot bolt, this is for a 1/2" drive breaker bar to apply tension to the bracket to tension the belt while tightening the bolt(s). The alternator belt is tensioned by merely grabbing the bottom of the alternator and pulling up/outboard while tightening the bolt(s). Belt alignment is best checked with a straight edge against the face of the WP pulley sheave...the belt might be more aligned in the rear alternator pulley sheave...straight edge will tell. The INTERNET, the MISinformation superhighway

Re: Are my belts and pulleys correct? [Re: John_Kunkel] #1909470 09/09/15 08:19 PM 09/09/15 08:19 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	Originally Posted By John_Kunkel You'll notice that the P/S bracket has a 1/2" square hole near the pivot bolt, this is for a 1/2" drive breaker bar to apply tension to the bracket to tension the belt while tightening the bolt(s). i learn something every day......

Re: Are my belts and pulleys correct? [Re: BigAg] #1909883 09/10/15 01:20 PM 09/10/15 01:20 PM
Joined: Aug 2009 Posts: 304 Portland, Oregon D Digger73 enthusiast
Digger73 enthusiast D Joined: Aug 2009 Posts: 304 Portland, Oregon	You might want to also round up the spacer that goes between the alternator and the head. Without it you can mess up the alternator when the pivot bolt is tightened. Digger73 (Mike) I live with fear everyday but, sometimes she lets me race!

Re: Are my belts and pulleys correct? [Re: BigAg] #1909888 09/10/15 01:32 PM 09/10/15 01:32 PM
Joined: Jan 2003 Posts: 21,079 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,079 Niles , Ohio	Alt belt might line up better on the back groove.It looks like its off.The spacers can be a pain.With stuuf being changed over years you sometimes have to play with them to get align right.Rocky Chrysler Firepower

Re: Are my belts and pulleys correct? [Re: BigAg] #1910109 09/10/15 07:55 PM 09/10/15 07:55 PM
Joined: Jan 2003 Posts: 10,590 Freeport IL USA poorboy I Live Here
poorboy I Live Here Joined: Jan 2003 Posts: 10,590 Freeport IL USA	With the double pulley on the alternator, the belt will probably be off a bit in either groove. That system was designed for the single pulley alternator, and the belt alignment between the single pulley and the double pulley are different. Most of the time, either the rear groove or the front groove will provide a better alignment, just not perfect. With incorrect alignment, consistent high rpm could cause belt failure or it could cause throwing off the belts. Normal driving will probably not cause an issue. Gene

Re: Are my belts and pulleys correct? [Re: BigAg] #1910118 09/10/15 08:11 PM 09/10/15 08:11 PM
Joined: Jan 2003 Posts: 21,079 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,079 Niles , Ohio	I have double on my single pulleys.My 440 sees 6500 all the time.Never tossed a belt in 15 years.I did play with the spacers.Rocky Chrysler Firepower

Re: Are my belts and pulleys correct? [Re: BigAg] #1911110 09/12/15 03:30 PM 09/12/15 03:30 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	FYI one guy mentioned using a straight piece of alum tubing (3/8 iirc) layed in the pulley grooves to check his alignment and another guy used a laser pointer same way live every 24 hour block of time like it's your last day on earth

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