TRNW-2: 10R80 pump bolts

[Dan Hogan]

 Use the updated factory bolts and a torque wrench to tighten to spec.  Impacts to teardown but the days of impact assembly is gone.  A speed handle is your friend.

[cid:a674986a-da33-4e60-a6ff-f754807b95af]

Pumps and valvebodies need care.


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Dan Hogan

Buster's Transmission Service

https://busterstransmission.com

704.847.5321

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From: trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of Steve Everett via trnw2 <trnw2 at trnw.net>
Sent: Wednesday, April 9, 2025 8:00 AM
To: Technical Discussion Forum <trnw2 at trnw.net>
Subject: TRNW-2: 10R80 pump bolts

  I just had a 10R80 I built a couple weeks ago come back leaking out the front,  virtually all the pump bolts were loose,  I did not reuse the factory ones, but used the ones in the Precision kits,  which have the cheesey silicone applied around the bolt head,   So either I didn't get them tight enough originally ?  which may simply be what happened, I typically put them in with my speed handle, tighten them with my battery powered impact, and recheck them with my speed handle, but I could have been distracted during that process or pulled off to do something else ?  who knows ?

   What are most of ya'll using on these ?  the later design Ford bolts ?  or using these cheesey ones and maybe adding some locktite or adding a dab of silicone ?

  Steve
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