Acura 2002 RSX Service Manual page 554

Automatic Tra nsm ission
System Description (cont'd)
Clutches and Gears
The s-speed automatic transmission uses hydraulically-actuated
clutches to engage or disengage the transmission
gears when hydraulic pressure is introduced into the
clutch drum, the clutctr pLtJn moves. ini"s presses tne triction
discs and steel plates together, locking them so they don't slip. Power
is then transmitted through the engaged clutch
pack to its hub-mounted gear. Likewise, when the
hydraulic pressure is bled from the clutch palk. ine prston reteases
the friction discs and steel plates, and they are free io slide past
each other. This allows the gear to spin rndependently
on its shaft. transmitting no power.
l st Clutch
The lst clutch engages/disengages 1st gear, and is located
at the middte of the secondary shaft. The 1st ctutch is
ioined back-to-back to the 3rd clutch. The tst ctutch is supplied hyJiaulic pressure by its ATF
feed pipe within the
secondary shaft,
2nd Clutch
The 2nd clutch engages/disengages 2nd gear, and is located at
the end of the secondary shaft, opposite the end cover.
The 2nd clutch is supplied hydraulic presiure by a circrir connelt"jto
the Internat hydraulic circuit.
3rd Clutch
The 3rd clutch engages/disengages 3rd gear, and is located at the
middle of the secondary shaft. The 3rd ctutch is
ioined back-to-back to the 1st clutch rhe3rd clutch is supplied hydraulic pressure ov its
nriteea pipe-withinthe
secondary shaft.
4th Clutch
The 4th clutch €ngages/disengages 4th_gear, as well as reverse gear,
and is located at the middle of the mainshaft. The
4th clutch is joined back-to-back to the sth clutch. The 4th clutchls
supplied hydraulic pressure by its ATF feed pipe
with in the mainshaft.
5th cluteh
The 5th clutch engages/disengages sth gear, and is located
at the middle of the mainshaft. The 5th clutch is joined
back-to-back to the 4th ctutch. The sth clutch is supplied hydraulic pressure
by its ATF feed pipe within the mainshaft.
Gear operation
Gears on the mainshaft;
. 4th gear engages/disengages with
the mainshaft bythe 4th clutch.
. sth gearengages/disengageswith
the mainshafr bythe sth clutch.
. Reverse gear engages/disengages
with the mainshaft bv ti," +it lirr"n.
. ldler gear is splined with the mainshaft,
and rotates witt th" mainsnatt.
Gears on the countershaft:
. Final drive gear is integralwith
the countershaft.
' 1 s l , 2 n d , 3 r d , s t h , a n d p a r k g e a r s € r e s p l i n e d w i t h t h e c o u n t e r s h a f t , a n d r o t a t e w i t h t h e c o u n t e r s h a f t .
' 4th gear and reverse gear rotate freely
from the countershaft. The reverse serector engages 4th gear
and .everse
gear with the reverse selector hub. The re-verse selector
hub is splined to the counters-hait so thaj in" o,n g"u, "no
reverse gear engage with the countershaft.
Gears on the secondarv shaft:
. lstgear engages/disengages
with the secondary shaft by the 1st clutch.
. 2nd gear engages/disengages
with the secondary shaft bythe Znd ctutcfr.
. 3rd gear engages/disengages with
the secondary shaft by tt" S.O.ir."n.
' ldler gear is sprined with the secondary
shaft, and ,otut"" *itnin" se"ondary shaft.
The idler gear on the idrer shaft transmits power between
the mainshaft and the secondary shaft.
The reverse idler gear transmits power from the mainshatt
r"u"rs" l"u, ro the countershaft reverse gear, and changes
rotation direction of the countershaft to reverse.
14-22