Toyota 2006 U151E Valve Body Upper/Lower Top Plate Bolt Torque Specification?

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May 5, 2008
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#1
Make
Toyota
Model
Sienna
Year
2006
Miles
150000
Engine
3MZ-FE
Hi,

I'm rebuilding a U151E from my 2006 Toyota Sienna and I can not find the torque specification for the bolts that have cover plates for both the upper and lower valve body halves.

https://d2q1ebiag300ih.cloudfront.n...ons/4170/TOY181-Tech-Install.pdf?v=1534854473

You may see an example of the cover plate in the first image of the link above. The bolts I am asking about have the smaller bolt heads.

The Sonnax Zip Kit Instructions do not mention removing these plates, but I can not get all the spool valves out and I am concerned the paper gaskets will be damaged during cleaning. Furthermore, I have new gaskets.

Also, the Toyota Manual does not describe the tear down of the valve body except for solenoid replacement, so the torque setting is not listed.
 

grcauto

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#3
There's a couple guys on You Tube that do these and I think they tell the specs for VB. Just search and do a little watching.
 
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#4
YouTube was a great suggestion since I needed to know whether the install the valve body with ATF or dry. The videos indicated dry.

I was able to deduce that the torque is90 in-lbs. This bolt is identified as an 8T-5, but the torque value is not in the chart. However, 90 in-lbs is used for anther bolt in the valve body from the instructions provided by Sonnax. Furthermore, there are only 3 different torque values such as 25, 48 and 90 so I feel these a settings for classes of fasteners.

I used the torque wrench and set to 85 in-lbs and tightened the already tight bolts (since I had not removed them yet) and the wrench indicated they were tighter than 85. Setting the wrench up to 90 in-lbs and tightening provided a small tightening but I figure this is the error in the wrench so within +- 5 in-lbs.

Therefore, I am relatively confident 90 in-lbs is the preferred value.

Thanks so much for the comments.