Failed fans repaired - Chevy SSR Forum
 
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post #1 of 5 (permalink) Old 05-12-2011, 12:11 PM Thread Starter
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My SSR:
UV SSR 141mph on the Dyno 262 RWHP My other SS is an HHR SS "The RED ROCKET" "Tuned by CJ"
Failed fans repaired

I just got the failed fan exchange from PRPLHZE in the mail. 1 hour later it is repaired and ready for the next Fanatic in need.
I have these on hand and available for temporary use until you get your MIKE AZ fan to replace it.
Here is what I have found in all three I have repaired. The brushes are stuck in place because of fine GRIT. The sponge filter stops the big stuff but allows fine dust through. (0.0090 in or 0.19mm) This works it's way into the motor brush holders and eventually sticks the brushes in place.

Those specks are the GRIT.
Blown off with Dust Away

How to disassemble:
Picture 1. Fan as removed, 2. Remove 3 nuts and unclip the power plug, 3. bend 6 tabs out of the way, 4. GENTLY pry the top plate up
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post #2 of 5 (permalink) Old 05-12-2011, 12:39 PM Thread Starter
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My SSR:
UV SSR 141mph on the Dyno 262 RWHP My other SS is an HHR SS "The RED ROCKET" "Tuned by CJ"
Fan repair Continued

With the plate lifted off you can see the plate that holds the brushes. Notice that the brushes, after the plate is removed, do not move. This is the problem, as the brushes wear they lose contact and the fan fails to spin

Picture 1. Brushes plate in place, 2. ditto, 3, notice the brushes did not move 4, stuck in place and the canned air I used to blow out the GRIT. As the air is applied gently move the brushes and you will find they will begin to spring in and out. Keep this up until all 4 are moving freely with out any gritty feel.

Continued:
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post #3 of 5 (permalink) Old 05-12-2011, 01:04 PM Thread Starter
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My SSR:
UV SSR 141mph on the Dyno 262 RWHP My other SS is an HHR SS "The RED ROCKET" "Tuned by CJ"
Fan repair Continued

Now that the GRIT has been removed you will notice the brushes stick out a lot farther and move freely. To reassemble do the opposite. If you mess it up remember it didn't work when you started. Putting the brush plate back takes 4 hands or more, there are 4 brushes to hold back while you lower the plate past the bearing onto the armature.
I used a cold chisel to bend the 6 tabs back into place. Be sure the motor plate is tight against the housing. A small hammer helps to bend the tabs a little tighter.
I don't recommend using any kind of lube as it will give the GRIT a place to stick.

Good Luck!!

Picture 1. Brushes extended, 2. Plate reinstalled, 3. SUCCESS!!!

PM if you have any questions.

JimBob
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post #4 of 5 (permalink) Old 05-12-2011, 01:51 PM Thread Starter
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My SSR:
UV SSR 141mph on the Dyno 262 RWHP My other SS is an HHR SS "The RED ROCKET" "Tuned by CJ"
Low Speed Resistor

I think the curved ivory colored piece is the low speed resistor. Notice the burnt looking wires. Do ya think this fan runs a little HOT!!!


That resistor is 1/4 the size of the one Mike AZ uses.

JimBob

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post #5 of 5 (permalink) Old 05-14-2011, 08:49 PM Thread Starter
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My SSR:
UV SSR 141mph on the Dyno 262 RWHP My other SS is an HHR SS "The RED ROCKET" "Tuned by CJ"
Has any one got an original fan on the shelf?

Has any one got an original fan on the shelf? If you do I'd like to rebuild it and see if it can be saved. Out of three ,they all had the same problem. If you have one that fails the bench test I'd like to repair it if possible.
PM me'

JimBob

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