Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Acura 3.5RL 1996-2004 Approved srm RL9604S14006A
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Main Menu Table of Contents
Description
Clutches
The four-speed automatic transmission uses hydraulically-actuated clutches to engage or disengage the transmission gears.
When the hydraulic pressure is introduced into the clutch drum, the clutch piston moves. This presses the friction 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 pack, the piston releases the friction discs
and steel plates, and they are free to slide past each other. This allows the gear to spin independently of its shaft, transmit-
ting no power.
1st Clutch
The 1st clutch engages/disengages 1st gear, and is located at the middle of the mainshaft. The 1st clutch is joined back-to-
back to the 4th clutch. The 1st clutch is supplied hydraulic pressure by its ATF feed pipe within the mainshaft.
1st-hold Clutch
The 1st-hold clutch engages/disengages Ist-hold, position or position, and is located at the middle of the counter-
shaft. The Ist-hold clutch is supplied hydraulic pressure by its ATF feed pipe within the countershaft.
2nd Clutch
The 2nd clutch engages/disengages 2nd gear, and is located on the rear end of the mainshaft. The 2nd clutch is supplied
hydraulic pressure by its ATF feed pipe within the mainshaft.
3rd Clutch
The 3rd clutch engages/disengages 3rd gear, and is located at the end of the countershaft, opposite the rear cover. The
3rd clutch is supplied hydraulic pressure by a circuit connected to the internal hydraulic circuit.
4th Clutch
The 4th clutch engages/disengages 4th gear, and is located at the middle of the mainshaft. The 4th clutch is joined back-
to-back to the 1st clutch. The 4th clutch is supplied hydraulic pressure by a circuit connected to the internal hydraulic cir-
cuit.
Reverse Clutch
The reverse clutch engages/disengages reverse gear, and is located on the rear end of the countershaft. The reverse clutch is
supplied hydraulic pressure by its ATF feed pipe within the countershaft.
One-way Clutch
This transmission has two one-way clutches: the 1st gear one-way clutch and the 2nd gear one-way clutch. The 1st gear
one-way clutch is positioned between the countershaft 1st gear and the one-way clutch hub, with the one-way clutch hub
splined to the countershaft 2nd gear. The countershaft 1st gear provides the outer race surface, and the one-way clutch
hub provides the inner race surface. The 2nd gear one-way clutch is positioned between the countershaft 2nd gear and
the park gear, with the park gear splined to the countershaft. The countershaft 2nd gear provides the outer race surface,
and the park gear provides the inner race surface. The one-way clutches lock up when power is transmitted from the
mainshaft 1st gear to the countershaft 1st gear. The 2nd gear one-way clutch locks up when power is transmitted from the
mainshaft 2nd gear to the countershaft 2nd gear. The 1st clutch and gears remain engaged in the 1st, 2nd, 3rd, and 4th
gear positions in the or position. However, the 1st gear one-way clutch disengages when the 2nd, 3rd, or 4th
clutches/gears are applied in the or position. This is because the increased rotational speed of the gears on the
countershaft over-ride the locking "speed range" of the one-way clutch. Thereafter, the one-way clutch freewheels with
the 1st clutch still engaged.
OUTSIDE OF ONE-WAY
CLUTCH INSIDE OF ONE-WAY
CLUTCH
Splined with counter-
shaft
The sprags engage/
disengage outside
and inside of the
one-way clutch.
LOCKING CONDITION OVER-RIDING
SPRAG LOCKING SPEED CONDITION
Main Menu Table of Contents
DIFFERENTIAL
EXTENSION SHAFT
SECONDARY DRIVE
GEAR
3RD CLUTCH
SECONDARY DRIVEN GEAR
MAINSHAFT 3RD
GEAR COUNTERSHAFT 3RD
GEAR
MAINSHAFT 4TH COUNTERSHAFT 4TH
GEAR GEAR
4TH CLUTCH
1ST-HOLD CLUTCH
1ST CLUTCH 1ST-GEAR ONE-WAY
CLUTCH
COUNTERSHAFT 1ST GEAR
MAINSHAFT 1ST
GEAR ONE-WAY CLUTCH HUB
MAINSHAFT 2ND COUNTERSHAFT 2ND GEAR
GEAR
2ND-GEAR ONE-WAY
2ND CLUTCH CLUTCH
PARK GEAR
MAINSHAFT REVERSE REVERSE CLUTCH
GEAR
COUNTERSHAFT REVERSE
GEAR
MAINSHAFT COUNTERSHAFT
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