48RE Direct clutch burnup FIXED!!

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dhritsko
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Re: 48RE Direct clutch burnup FIXED

Post by dhritsko » Fri Jun 24, 2016 11:22 am

even using the thick washer on the pump is scary , puts that ring close to the edge . Always use the thick washer between the drums not on the stator .
Dave Hritsko
Transtar Industries
Technical Service Manager

Bryan
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Re: 48RE Direct clutch burnup

Post by Bryan » Fri Jun 24, 2016 12:12 pm

dhritsko wrote:even using the thick washer on the pump is scary , puts that ring close to the edge . Always use the thick washer between the drums not on the stator .
Yes, I checked the end play and adjusted it to .015 with the washer between the drums. The wear pattern on the sealing ring surface of the direct drum looked perfect. Great ideas! Thank you all for the input.

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Re: 48RE Direct clutch burnup

Post by Bryan » Fri Jun 24, 2016 12:19 pm

The other strange thing about this problem is that we got the 2-3 shift to feel perfect. No slide or overlap issues in the 2-3 shift "feel" and no slip or delay in reverse. I am thinking some type of leak or pressure loss while the clutch is applied in 3rd and 4th??

Bryan
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Re: 48RE Direct clutch burnup

Post by Bryan » Fri Jun 24, 2016 12:40 pm

I mention this because, on original assembly we have what felt like an overlap "bind" issue. We worked that out by making the 2-3 seperator plate hole smaller and loosening the band adjustment.

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Re: 48RE Direct clutch burnup

Post by Bryan » Fri Mar 31, 2017 1:53 pm

Sorry for the late update. This truck is fixed!! Driving down the freeway with the pressure gauge hooked up, the line pressure would drop drastically and intermittantly and then spike back up. Not enough to neutral the transmission and we could hardly see it in the tach. We had installed the new internal wiring kit to retro back to the steel can gov. pressure sensor on the initial rebuild. We removed the kit, reinstalled the plastic gov. pressure sensor and problem went away. The truck has been running flawless for several months. Thank you all for the responses.

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dhritsko
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Re: 48RE Direct clutch burnup

Post by dhritsko » Fri Mar 31, 2017 2:00 pm

thank You for the update , have a GREAT weekend
Dave Hritsko
Transtar Industries
Technical Service Manager

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