ACURA TL 1995 Service Repair Manual

Description

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Position

Hydraulic pressure is not applied to the clutches. Power is not transmitted to the countershaft.

Position

Hydraulic pressure is not applied to the clutches. Power is not transmitted to the countershaft. The countershaft is locked

by the parking brake pawl interlocking the parking gear.

TORQUE

CONVERTER

SECONDARY

DRIVE

GEAR
2ND CLUTCH
4TH CLUTCH

1ST CLUTCH

MAINSHAFT

COUNTERSHAFT

1ST-HOLD

CLUTCH

ONE-WAY CLUTCH

SERVO VALVE

(SHIFT FORK SHAFT)

3RD CLUTCH

SECONDARY DRIVEN

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Description

Power Flow (cont'd)

Position

In 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. 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 one-way clutch and the 1st-hold clutch. The one-way clutch is

used to drive the countershaft, and the 1st-hold clutch drives the countershaft.

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

TORQUE CONVERTER

MAINSHAFT

1ST GEAR

SECONDARY

DRIVE GEAR
1ST CLUTCH

MAINSHAFT

COUNTERSHAFT

1ST-HOLD

CLUTCH

COUNTERSHAFT

1ST GEAR

ONE-WAY CLUTCH

SECONDARY DRIVEN GEAR
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 coun-

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

2. The 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

pressure 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

1ST CLUTCH

MAINSHAFT

SECONDARY

DRIVE GEAR
COUNTERSHAFT

1ST-HOLD

CLUTCH

COUNTERSHAFT

1ST GEAR

SECONDARY DRIVEN GEARProCarManuals.com

Description

Power Flow (cont'd)

Position

Position is provided to drive only in 2nd gear.

1. 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, which drives the counter-

shaft.

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

NOTE: Hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of the 2nd gear exceeds that

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

TORQUE CONVERTER

2ND CLUTCH

MAINSHAFT

SECONDARY

DRIVE GEAR
COUNTERSHAFT

ONE-WAY

CLUTCH

COUNTERSHAFT

2ND GEAR

SECONDARY DRIVEN GEAR
MAINSHAFT

2ND GEARProCarManuals.com

In or position, the optimum gear is automatically selected from 1st, 2nd, 3rd, and 4th gears, according to conditions

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

or Position, 1st gear

1. 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 clutch.

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

NOTE: In or position, hydraulic pressure is not applied to the 1st-hold clutch.

TORQUE CONVERTER

MAINSHAFT 1ST GEAR

1ST CLUTCH

MAINSHAFT

COUNTERSHAFT

COUNTERSHAFT

1ST GEAR

ONE-WAY CLUTCH

SECONDARY DRIVEN GEAR
PARKING GEAR
SECONDARY

DRIVE GEARProCarManuals.com

Power Flow (cont'd)

or Position, 2nd gear

1. 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.

3. Power is transmitted to the secondary drive gear, which drives the secondary driven 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 one-way clutch.

TORQUE CONVERTER

2ND CLUTCH

MAINSHAFT

SECONDARY

DRIVE GEAR

COUNTERSHAFT

ONE-WAY

CLUTCH

SECONDARY DRIVEN GEAR
Description

COUNTERSHAFT

2ND GEAR
MAINSHAFT

2ND GEARProCarManuals.com

or Position, 3rd gear

1. Hydraulic pressure is applied to the 3rd clutch. Power from mainshaft 3rd gear is transmitted to the countershaft 3rd

gear.

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

NOTE: In or position, 3rd gear, hydraulic pressure is also applied to the 1st clutch, but since the rotation speed

of 3rd gear exceeds that of 1st gear, power from 1st gear is cut off at the one-way clutch.

TORQUE CONVERTER

MAINSHAFT 3RD GEAR

MAINSHAFT

SECONDARY

DRIVE GEAR
COUNTERSHAFT

ONE-WAY

CLUTCH

COUNTERSHAFT 3RD GEAR

3RD CLUTCH

SECONDARY DRIVEN GEARProCarManuals.com

Description

Power Flow (cont'd)

Position, 4th gear

1. Hydraulic pressure is applied to the 4th clutch, which rotates together with the mainshaft, and the mainshaft 4th gear

rotates.

2. Power is transmitted to the countershaft 4th gear, which drives the countershaft.

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

NOTE: In position, 4th gear, hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of 4th

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

TORQUE CONVERTER

4TH CLUTCH

MAINSHAFT 4TH GEAR

MAINSHAFT

SECONDARY

DRIVE GEAR
COUNTERSHAFT

ONE-WAY

CLUTCH

REVERSE

SHIFT FORK

SECONDARY DRIVEN GEAR
COUNTERSHAFT

4TH GEAR
REVERSE SELECTOR
REVERSE

SELECTOR

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Position
1 . Hydrauli c pressur e i s switche d b y th e manua l valv e t o th e serv o valve , whic h move s th e revers e shif t for k t o th e
revers e position . Th e revers e shif t for k engage s wit h th e revers e selector , revers e selecto r hu b an d th e countershaf t
revers e gear .
2 . Hydrauli c pressur e i s als o applie d t o th e 4t h clutch . Powe r i s transmitte d fro m th e mainshaf t revers e gea r vi a th e
revers e idle r gea r t o th e countershaf t revers e gear .
3 . Th e rotatio n directio n o f th e countershaf t revers e gea r i s change d vi a th e revers e idle r gear .
4 . 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 .
TORQU E CONVERTE R
REVERSEIDLER GEA R
COUNTERSHAF TREVERSE GEA R
MAINSHAF T
COUNTERSHAF T
SECONDARYDRIVE GEAR
COUNTERSHAFT
REVERSE GEAR
REVERSESHI FT FORK
REVERSESELECTOR
REVERSE SELECTOR HUB
SECONDARY DRIVEN GEAR SERVO VALVE MAINSHAF T
REVERSE
GEAR
REVERSEIDLER GEAR
4T H CLUTC H
MAINSHAF T REVERS E GEA R
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