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Where to buy shims for ac clutch hub?

 
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Old 13 Jul 2017, 10:06 am
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Default Where to buy shims for ac clutch hub?

My ac issues seem to be due to too much of a gap at my ac clutch hub.

Shims are placed inside of the mounting hole before you slide it on the compressor spindle in order to achieve the right gap.

In case I need different sized shims to get the correct gap on mine, where can I buy shims? I haven't been able to find them.
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Old 13 Jul 2017, 10:54 am
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Default Re: Where to buy shims for ac clutch hub?

Did you check the resistance through the clutch coil? Often when the coil gets weak, it can no longer pull the clutch in unless closer. If that's the case, it will only get worse over time. Plus the coil will start getting really hot.

Here's a how-to:

Quote:
Voltage Test: Remove the plug from the clutch coil and activate the A/C system by placing the selector on cold. Using the 20 volt setting on the DVOM; check for battery voltage at the harness connector. If battery or charging system voltage is present at the plug, test the coil for resistance.

Resistance Test: An A/C clutch coil resistance test is performed with an Ohmmeter. A result of 0.00 indicates that there’s a short in the windings and a result of O.L or infinity indicates an open in the windings. There's nothing special about a clutch coil, most readings are in the range of 2 to 5 Ohms, and any reading below 2 Ohms or over 5 Ohms indicates a bad coil. The diode should be tested as well. Diodes are like one-way check valves, because current flows in one direction and not the other. Many multimeters have a selection or function for testing diodes. This is because many coils contain zener diodes that allow current, but only up to a certain threshold. If unsure, check with the manufacturer's manual for specifications and special procedures for performing the test.
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Old 13 Jul 2017, 11:26 am
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Default Re: Where to buy shims for ac clutch hub?

Hey Kon, you may NOT need shims. Seems to me like all you need to do is push the clutch closer in so the magnet can engage it. If you can find a clutch tool at an auto parts store you can just use it to push the clutch in so you'll have a narrower air gap. See if AZ, Advance or O'Reilly (whoever's closest) has one in the loan a tool program.
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Old 13 Jul 2017, 11:44 am
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Default Re: Where to buy shims for ac clutch hub?

Looks like it is called a A/C clutch install kit. RockAuto shows it.

2002 CHRYSLER PT CRUISER 2.4L L4 A/C Compressor Clutch Installation Kit | RockAuto
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Old 13 Jul 2017, 12:13 pm
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Default Re: Where to buy shims for ac clutch hub?

Hey Kon, go to Autozone and ask to look at this. OEM A/C clutch shoe tool 27002 - Read Reviews on OEM #27002
I THINK this should do the job for you.
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Old 13 Jul 2017, 01:14 pm
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Default Re: Where to buy shims for ac clutch hub?

Quote:
Originally Posted by Handy_Cruiser View Post
Did you check the resistance through the clutch coil? Often when the coil gets weak, it can no longer pull the clutch in unless closer. If that's the case, it will only get worse over time. Plus the coil will start getting really hot.

Here's a how-to:
Nope, I haven't been able to access the top of the compressor to test the coil or the high pressure switch on the right side (i mentioned That in my other thread about working on my ac).

I can, however, access the clutch hub. I'm in a position right now ever if I can fix it by rethinking I will and then worry about installing a new hub and coil in the future.
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Old 13 Jul 2017, 01:19 pm
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Default Re: Where to buy shims for ac clutch hub?

Quote:
Originally Posted by chuzz View Post
Hey Kon, you may NOT need shims. Seems to me like all you need to do is push the clutch closer in so the magnet can engage it. If you can find a clutch tool at an auto parts store you can just use it to push the clutch in so you'll have a narrower air gap. See if AZ, Advance or O'Reilly (whoever's closest) has one in the loan a tool program.
In actuality do need to get the hub closer Chuzz, I figure all I have to do is remove shims so there's a chance, when I get the clutch hub off, there will be two or three shims in there, I can remove one and it will give me the correct gap I need.

I'm looking for more shims just in case I need a size not already installed. Preemptive shims, know what I mean? Hahahha

I'm not sure how the tool you mention wiIl work. Since there are shims already in the throat of the sleeve that sits over the compressor shaft, I don't see how I could compress the hub down further.

Am I missing something?
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Old 13 Jul 2017, 01:20 pm
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Default Re: Where to buy shims for ac clutch hub?

Quote:
Originally Posted by VsandFords View Post
Looks like it is called a A/C clutch install kit. RockAuto shows it.

2002 CHRYSLER PT CRUISER 2.4L L4 A/C Compressor Clutch Installation Kit | RockAuto
Good find. Thanks!
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Old 13 Jul 2017, 03:03 pm
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Default Re: Where to buy shims for ac clutch hub?

Does the center shaft on the compressor have a hole with threads in it? If so, that tool would insert inside the shaft and thread in. Then the larger thread would screw into the threads in the center of the clutch. Lock it down, then turn the outer part of the tool to force the clutch in. Maybe put a large nut or some thick washers on it. I don't see how shims would come into play unless they're behind the clutch. If it's not set up like that, then this tool won't work.
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Old 13 Jul 2017, 06:08 pm
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Default Re: Where to buy shims for ac clutch hub?

This is a pic of the front of the a.c. clutch hub and some shims. The mounting bolt goes through the center, the shims insert in the back, and the bolt goes through them, then screws down into the shaft coming out of the compressor.

$(KGrHqVHJFQFDKzUCKcRBQ4,R,dBQ!--60_3.JPG

This is a drawing of the backside of the clutch hub. The shims (#3 in the drawing) sit inside the center portion that the mounting bolt goes through to help achieve the proper gap. Less shims, less gap. more shims, more gap.

62217_pte_1.jpg
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