A500 Tech. Bulletin
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Transcript of A500 Tech. Bulletin
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8/13/2019 A500 Tech. Bulletin
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! Page 1 of 3Copyright 2003 ATRA. All Rights Reserved.
A-500/A-518Overdive Section Assembly Tips
Direct Clutch Assembly
There are three different direct clutch counts possible for the A-500 / A-518. The only reliable way to determine
direct clutch count is the snap ring groove height.
Attempting to determine direct clutch count based on year, application, engine size, etc, will not be successful!
Measure the distance from the snap ring groove to the top edge of the drum (as shown below) to determine
direct clutch count.
The 5 clutch direct pack was used for early production on A-500s only. All A-500s were updated to the 6 clutch
direct pack. If you have an early A-500 with a 5 clutch pack, it is advisable to update to a 6 clutch pack drum
(part #4461040).
All A-518 units come with an 8 clutch direct pack.
If you want to beef-up and A-500 for a heavy duty application, you can upgrade to an A-518, 8 clutch drum
(part #4661089).
NOTE: It is extremely important to measure for the proper selective overdrive shim.
Technical Bulletin #145
Transmission:
Subject:
Application:
Issue Date:
A-500/A-518
Overdive section assembly tips
Chrysler
November, 1992
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Technical Bulletin #145
Copyright 2003 ATRA. All Rights Reserved.! Page 2 of 3
To make certain youve matched up you direct clutch count correctly with you direct drum, just be sure that after
you install the top snap ring in the direct drum and release the clutch from the press that the top end of the sun
gear is within 1/16"- 1/8" flush with the top of the sliding hub hole.
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Technical Bulletin #145
Copyright 2003 ATRA. All Rights Reserved. ! Page 3 of 3
Overdrive Clutch Assembly
There are four different overdrive clutch counts available. The first version, with only two clutch discs was up-
dated to a three clutch version shortly after production began.
NOTE: It is advisable to update a two clutch version to three clutches whenever you encounter one.
A500: Thick reaction plate
A500: 2 clutches, 1 steel
A500: Thick apply plate
A500: Round wire snap ring
A500: Thin reaction plate goes first
A500: 3 clutches, 2 steel
A500: Thick apply plate
A500: Round wire snap ring
A518: Except 1992 and later Diesel:
A500: Thin reaction plate goes first
A500: 4 clutches, 3 steels
A500: Thin apply plate, (Same as thin reaction plate.)
A500: Round wire snap ring
A518: 1992 and later diesel:
A500: Thin reaction plate goes first
A500: 5 clutches, 5 steels
A500: Round wire snap ring
A500: (The last steel acts as the apply plate.)