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Old 04-04-2010, 05:08 PM   #1
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Default AC Compressor Clutch replacement

Hi,

The CA on my 2007 F150 XLT stopped working today (21,000 miles!)

It has gas and when I looked closer I see that the the clutch engages and the outer hub turns, but the clutch seems to slip so bad the compressor will not turn. I can turn the compressor shaft with my fingers. To be sure I ran a jumper wire to the clucth coil and I get the same thing. It draws just under 4 amps "engaged".

Anyway has anyone ever replaced a cltcu on the truck? Are there are special tools needed?

Is it common for these things to slip?

I really appreciate the help and thanks in advance.

Howard
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Old 04-04-2010, 05:25 PM   #2
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Here's the service manual procedure,sorry the numbering is f'd up:

CLUTCH AND CLUTCH FIELD COIL

Special Tool(s)


Special Tool(s)



Removal

1. Remove the A/C compressor.



2. Remove the A/C clutch disc and hub bolt.

1 Using the special tool, hold the A/C clutch disc and hub.
2 Remove the A/C clutch disc and hub bolt.

3. Remove the A/C clutch disc and hub.
4. Remove the A/C clutch disc and hub spacer(s).
5. Remove the A/C clutch pulley snap ring.



6. CAUTION: Do not use air tools. Damage to the A/C compressor pulley or A/C compressor may result. Remove the A/C compressor pulley.

1 Install the special tool.
2 Remove the A/C compressor pulley.



7. CAUTION: Do not use air tools. Damage to the A/C clutch field coil or A/C compressor may result. Remove the A/C clutch field coil.

1 Install the special tool.
2 Install the special tool.
3 Remove the A/C clutch field coil.

Installation

NOTE: If installing a new A/C compressor, the A/C clutch components should be reused unless obvious signs of damage are found. If excessive grooving is found, a new A/C clutch disc and hub and A/C compressor pulley must be installed together. Otherwise, each component can be installed individually where needed.

1. Visually inspect the A/C clutch disc and hub, A/C compressor pulley and A/C clutch field coil for damage.

o Inspect for physical damage, including cracked or melted components or discoloration due to excessive heat.
o Inspect for excessive wear, including grooving in the A/C clutch disc and hub or A/C compressor pulley that is more than fingernail depth.
o Inspect for roughness in the A/C compressor pulley bearing.



2. CAUTION: Do not use air tools. Damage to the A/C clutch field coil or A/C compressor may result. Install the A/C clutch field coil.

1 Place the A/C clutch field coil on the A/C compressor with the A/C clutch field coil electrical connector correctly positioned.
2 Place the special tool on the A/C clutch field coil.
3 Place special tool 412-065 on special tool 412-078.
4 Use the special tool to install the A/C clutch field coil.

3. Install the A/C compressor pulley.
4. Install the A/C compressor pulley snap ring.
5. Install the A/C clutch disc and hub spacer(s) and the A/C clutch disc and hub.



6. Install the A/C clutch disc and hub bolt.

1 Hold the A/C clutch disc and hub with the special tool
2 Tighten to 14 Nm (10 lb-ft) .



7. Measure and adjust the clutch air gap by adding or removing A/C clutch disc and hub spacers.
8. Install the A/C compressor.
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Old 04-04-2010, 05:26 PM   #3
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Special tools:
Compressor Pully Remover
A/C Compressor Coil Installer
Compressor Clutch Holding Fixture
A/C Compressor Field Coil Installer
A/C Compressor Field Coil Remover

Let me know if you need the tool part #s.
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Old 04-04-2010, 06:15 PM   #4
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Thanks - that helped alot.

When I goggled the tools I found a good diagram.

I was able to get my Makita impact driver in there and pull out the center bolt then remove the disc/hub assembly. It looks like a little harmonic balancer. On mine the rubber joint is torn up and melted so the center hub just spun. That was the smell I smelt...

I guess I'll try replacing the hub and see what the compressor sounds like before I pull it.

Anyone else been down this road?
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Old 07-30-2011, 01:08 PM   #5
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Quote:
Originally Posted by howarda View Post
Thanks - that helped alot.

When I goggled the tools I found a good diagram.

I was able to get my Makita impact driver in there and pull out the center bolt then remove the disc/hub assembly. It looks like a little harmonic balancer. On mine the rubber joint is torn up and melted so the center hub just spun. That was the smell I smelt...

I guess I'll try replacing the hub and see what the compressor sounds like before I pull it.

Anyone else been down this road?
Give me a link th that diagram you found Please!! The outer bearing is shot on mine and i need to get it off before it seizes up.
thanks
TV
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Old 07-30-2011, 08:05 PM   #6
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with 21k that should be more than covered under your factory warranty
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Old 08-18-2011, 09:05 PM   #7
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Have an '07 w/same a/c clutch problem. anyone have an expanded view or link to one of clutch assy on fs-20 compressor? any help much appreciated!
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Old 08-18-2011, 09:27 PM   #8
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For another $100 you can probably buy a new compressor. Is it worth messing with?
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