Question on tranny failures.
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6G TLX-S
Joined: Dec 2000
Posts: 10,229
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From: YVR
Question on tranny failures.
Page 522
Clutch Q/A while Shifting
Table with temp rise and other stats for WOT second-to-third, WOT third-to-second (kick-down), and closed throttle 5-to-3 MANUAL downshift.
ON WOT 2-to-3 upshift, the delta T was 100 degrees (assume C)
ON WOT 3-to-2 downshift, the delta T was 23 degrees
ON Closed throttle 5-to-3 manual downshift, the delta T was 111 degrees.
“* Clutch Q/A is not too high and is judged to be at acceptable level.”
Clutch Q/A while Shifting
Table with temp rise and other stats for WOT second-to-third, WOT third-to-second (kick-down), and closed throttle 5-to-3 MANUAL downshift.
ON WOT 2-to-3 upshift, the delta T was 100 degrees (assume C)
ON WOT 3-to-2 downshift, the delta T was 23 degrees
ON Closed throttle 5-to-3 manual downshift, the delta T was 111 degrees.
“* Clutch Q/A is not too high and is judged to be at acceptable level.”
![[DWI]'s Avatar](data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'><circle class='avatar-circle-default' fill='%23be3b53' cx='25px' cy='25px' r='20px'></circle><text class='avatar-text-default' x='49%' y='53%' fill='white' text-anchor='middle' alignment-baseline='middle'>[</text></svg>)
Pro
Joined: Jan 2001
Posts: 617
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From: Jacksonville, Fl, USA
A 5 to 3 manual downshift is when the driver tells the transmission to downshift from 5th to 3rd by SS and tapping back twice, as opposed to letting the computer handle the shift automatically, the closed throttle part means your foot is off the gas and the butterfly valve is closed, basically engine braking in third gear.
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