ACURA TL 1995 Service Repair Manual

MAINSHAFT 3RD
GEAR
MAINSHAFT 4TH
GEA R
4TH CLUTCH
1ST CLUTCH
MAINSHAFT 1STGEAR
MAINSHAFT 2NDGEAR
2ND CLUTCH
MAINSHAF T REVERS EGEAR
DIFFERENTIA L
EXTENSIO N SHAF T
SECONDAR Y DRIV E
GEAR
3RD CLUTC H
SECONDAR Y DRIVE N GEA R
COUNTERSHAF T 3R D
GEA R
COUNTERSHAF T 4T HGEA R
1ST-HOL D CLUTC H
1ST-GEA R ONE-WA Y
CLUTC H
COUNTERSHAF T 1S T GEA R
ONE-WA Y CLUTC H HU B
COUNTERSHAF T 2N D GEA R
2ND-GEA R ONE-WA Y
CLUTC H
PARKIN G GEA R
REVERS E CLUTC H
COUNTERSHAF T REVERS E
GEAR
MAINSHAF T COUNTERSHAF T
NOTE: Th e illustratio n show s '9 6 model ; '9 7 - '9 8 model s ar e similar .
FRONT
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Description

Power Flow

*1: Although the 1st clutch engages, driving power is not transmitted
as
the 1st gear one-way clutch slips.

*2: Although the 1st and 2nd clutches engage, driving power is not transmitted as the one-way clutches slip.

*3: The one-way clutch engages when accelerating, and slips when decelerating.ProCarManuals.com

Position
Hydrauli c pressur e i s no t applie d t o th e clutches . Powe r i s no t transmitte d t o th e countershaft .
Positio n
Hydrauli c pressur e i s no t applie d t o th e clutches . Powe r i s no t transmitte d t o th e countershaft .
Th e countershaf t i s locke d b y th e parkin g brak e paw l interlockin g th e parkin g gear .
4TH CLUTCH 1ST CLUTCH 2ND CLUTCH
TORQU ECONVERTE R
MAINSHAFT
COUNTERSHAF T
REVERS E
CLUTCH
3RD CLUTCH
2ND GEA RONE-WA Y
CLUTC H
1ST GEA RONE-WA Y CLUTC H
(cont'd)
1ST-HOL DCLUTCH PARKIN
GGEAR
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Description

Power Flow (cont'd)

Position

position, hydraulic pressure is applied to the 1st clutch and the
1st-hold
clutch.

The power flow when accelerating is as follows:

1. The hydraulic pressure is applied to the
1st
clutch on the mainshaft, and power is transmitted via the 1st clutch to the

mainshaft
1st gear.

2. The hydraulic pressure is also applied to the 1st-hold clutch on the countershaft. Power transmitted to the mainshaft

1st gear is conveyed via the countershaft 1st gear to the 1st gear one-way clutch, the 2nd gear one-way clutch, and the

1st-hold clutch. The one-way clutches are used to drive the countershaft, and the 1st-hold clutch drives the counter-

shaft.

3. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.

TORQUE CONVERTER

1ST
CLUTCH

MAINSHAFT

1ST
GEAR

SECONDARY

DRIVE GEAR
MAINSHAFT

COUNTERSHAFT

2ND GEAR

ONE-WAY CLUTCH

1ST GEAR

ONE-WAY CLUTCH

SECONDARY DRIVEN GEAR
COUNTERSHAFT

1ST GEAR
In

1ST-HOLD

CLUTCH
PARKING GEARProCarManuals.com

Position

The power flow when decelerating is as follows:

1. Rolling resistance from the road surface goes through the front wheels to the secondary drive gear, then to the counter-

shaft 1st gear via the 1st-hold clutch which is applied during deceleration.

2. The 1st gear one-way clutch disengages at this time because the application of torque is reversed.

3. The counterforce conveyed to the countershaft 1st gear turns the mainshaft 1st gear. At this time, since hydraulic pres-

sure is also applied to the 1st clutch, counterforce is also transmitted to the mainshaft. As a result, engine braking can

be obtained with 1st gear.

TORQUE CONVERTER

MAINSHAFT 1ST GEAR

MAINSHAFT

SECONDARY

DRIVER GEAR
COUNTERSHAFT

COUNTERSHAFT

1ST GEAR

SECONDARY DRIVEN GEAR

(cont'd)
1ST CLUTCH

1ST-HOLD

CLUTCHProCarManuals.com

Description

Power Flow (cont'd)

Position

Position is provided to drive only in 2nd gear.

position, hydraulic pressure is applied to the 2nd clutch and to the 1st-hold clutch.

The power flow when accelerating is as follows:

1. The hydraulic pressure is applied to the 2nd clutch on the mainshaft, and power is transmitted via the 2nd clutch to the

mainshaft 2nd gear.

2. Power transmitted to the mainshaft 2nd gear is conveyed via the countershaft 2nd gear to the 2nd gear one-way clutch

on the inside of the countershaft 2nd gear. The 2nd gear one-way clutch is used to drive the parking gear on the counter-

shaft.

3. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.

Hydraulic pressure is applied to the 1st-hold clutch, but the countershaft is rotated by the 2nd gear one-way clutch.

TORQUE CONVERTER

MAINSHAFT

2ND GEAR

SECONDARY

DRIVE GEAR
2ND CLUTCH

MAINSHAFT

COUNTERSHAFT

2ND GEAR

ONE-WAY CLUTCH

COUNTERSHAFT

2ND GEAR

SECONDARY DRIVEN GEAR
In

PARKING GEARProCarManuals.com

Position

The power flow when decelerating is as follows:

1. Rolling resistance from the road surface goes through the front wheels to the secondary drive gear, then to the counter-

shaft 1st gear via the 1st-hold clutch which is applied during deceleration.

2. Power transmitted to the countershaft 1st gear is conveyed via the 1st gear one-way clutch on the inside of the counter-

shaft 1st gear to the countershaft 2nd gear. The 1st gear one-way clutch is used to drive the countershaft 2nd gear.

3. The 2nd gear one-way clutch disengages at this time because the application of torque is reversed.

4. The counter-force conveyed to the countershaft 1st gear turns the mainshaft 2nd gear. At this time, since hydraulic pres-

sure is applied to the 2nd clutch, counterforce is transmitted to the mainshaft. As a result, engine braking can be

obtained with 2nd gear.

TORQUE CONVERTER

MAINSHAFT

2ND GEAR
2ND CLUTCH

MAINSHAFT

COUNTERSHAFT
SECONDARY

DRIVE GEAR

1ST-HOLD

CLUTCH

COUNTERSHAFT

1ST GEAR
1ST GEAR

ONE-WAY CLUTCH
COUNTERSHAFT

2ND GEARProCarManuals.com

Description

Power Flow (cont'd)

1. The hydraulic pressure is applied to the 1st clutch, which rotates together with the mainshaft, and the mainshaft 1st

gear rotates.

2. Power is transmitted to the countershaft 1st gear, which drives the countershaft via the one-way clutches.

3. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.
Position, 1st gear
position, the optimum gear is automatically selected from 1st, 2nd, 3rd, and 4th gears, according to conditions

balance between throttle opening (engine load) and vehicle speed.

or
such as the
or
In

TORQUE CONVERTER

SECONDARY

DRIVE GEAR

SECONDARY DRIVEN

GEAR
COUNTERSHAFT

1ST GEAR

1ST GEAR

ONE-WAY

CLUTCH
2ND GEAR

ONE-WAY CLUTCH
PARKING GEAR
COUNTERSHAFT
MAINSHAFT
1ST CLUTCH
MAINSHAFT

1ST GEAR
NOTE: In
position, hydraulic pressure is not applied to the 1st-hold clutch.
orProCarManuals.com

1. The hydraulic pressure is applied to the 2nd clutch, which rotates together with the mainshaft, and the mainshaft 2nd

gear rotates.

2. Power is transmitted to the countershaft 2nd gear, which drives the countershaft via the 2nd gear one-way clutch.

3. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.
or

Position, 2nd gear

NOTE: In
or

position, 2nd gear, hydraulic pressure is also applied to the 1st clutch, but since the rotation speed

of 2nd gear exceeds that of 1st gear, power from 1st gear is cut off at the 1st gear one-way clutch.

TORQUE CONVERTER

MAINSHAFT

2ND GEAR

2ND CLUTCH

MAINSHAFT

1ST GEAR

ONE-WAY

CLUTCH

COUNTERSHAFT

2ND GEAR
2ND GEAR

ONE-WAY CLUTCH
PARKING GEAR
COUNTERSHAFT

SECONDARY DRIVEN GEAR
SECONDARY

DRIVE GEARProCarManuals.com

Description
Power Flo w (cont'd )
1. Th e hydrauli c pressur e i s applie d t o th e 3r d clutch . Powe r fro m mainshaf t 3rd gea r i s transmitte d t o th e countershaf t
3r d gear .
2 . Powe r i s transmitte d t o th e secondar y driv e gear , whic h drive s th e secondar y drive n gear .
NOTE : I n
or position , 3r d gear , hydrauli c pressur e i s als o applie d t o th e 1s t clutc h an d t o th e 2n d clutch , bu t
sinc e th e rotatio n spee d o f 3r d gea r exceed s tha t o f 2n d gear , powe r fro m 2n d gea r i s cu t of f a t th e 2n d gea r one-wa y
clutch .Position
, 3r d gea r
or
TORQU E CONVERTE R
MAINSHAFT 3R D GEA R
1S T CLUTC H
2ND CLUTC H
MAINSHAF T
SECONDAR Y
DRIV E GEA R
3RD CLUTC H
COUNTERSHAF T
3R D GEA R
COUNTERSHAF T2ND GEA R
COUNTERSHAF T
2ND GEA R
ONE-WA Y CLUTC H
SECONDAR Y DRIVE N GEA R
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