Re: [Chrysler300] Tension specs on A/C belts

["Bob Merritt bob@xxxxxxxxxxxxx [Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>]

Regarding the alternator tension tool,
I will have another batch of those available in two weeks.
My design replicates the style in the Chrysler service manual.
I didn't care for the hook design on the chance the hook
could penetrate the windings.

I made 50 of those back in 1996 and sold the last one in 2013.
This batch will be 25.

I'll holler when they are ready.

Bob Merritt


On 9/29/2014 1:08 AM, 'Rich Barber' c300@xxxxxxx [Chrysler300] wrote:

 

Al:

 

Spec’s for properly tensioning belts on a ‘64K may be found at John Holst’s very useful website—in the ’64 service manual—good for all models-Windsor-Imperial: http://www.jholst.net/64-service-manual/cooling.pdf       Specifications:  Page 7-2,  instructions:  Page 7-9

 

Alternator with A/C:  Used belt (over ½ hour old):  40 ft-lbf; Brand new belt:  60 ft-lbf.  (lbf is an abbreviation for pounds force).

 

The manual describes the process using special tool C-3841 which somehow engages the exterior of the alternator and has a ½” square hole for engagement by a torque wrench.  The manual also describes the belt deflection method as measured half-way between the alternator and compressor with five lbf applied:  New belt:  ¼”, used belt:  3/8”.

 

I did just receive a device like the special tool C-3832 used to apply torque to the power steering pump for tensioning its belt .  Proper torque on the power steering pump is 45 ft-lbf for new or used belts on all models.  Bob Merritt manufactures and markets this cool little tool.

 

I did find one “Fan Belt Tightener” tool at:  http://www.ctatools.com/catalogs/2013MasterCatalog/11-16EngineExternal.pdf            (#2705).    Available at Sears, Amazon and at least one eBay site.  Amazon:  http://www.amazon.com/CTA-Tools-2705-Belt-Tightener/dp/B00AZJYFE8          It appears to hook onto a protuberance on an alternator and has the hole for the torque wrench drive.   One might find this tool at a local auto parts store.  I’m going to order one online.  Looks like it beats the calibrated crowbar system.

 

C300K’ly,

Rich Barber

 

 

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of rinandal rinandvan@xxxxxxx [Chrysler300]
Sent: Sunday, September 28, 2014 6:26 PM
To: Chrysler300@xxxxxxxxxxxxxxx
Subject: [Chrysler300] Tension specs on A/C belts

 

 

Hi all,
Anyone know or can give me a reference for the tension( ft-lbs) required for a properly tensioned A/C to alternator belt( actually two belts) on a 1964 300K?

Thanks,
Al Van Lennep

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Posted by: Bob Merritt <bob@xxxxxxxxxxxxx>

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