1995 ACURA TL torque

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

Position, 4th gear

1. The 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 and to the 2nd clutch, but since the

rotation speed of 4th gear exceeds that of 2nd gear, power from 2nd gear is cut off at the 2nd gear one-way clutch.

MAINSHAFT

2ND GEAR

2ND CLUTCH

MAINSHAFT
TORQUE CONVERTER

MAINSHAFT

4TH GEAR

1ST CLUTCH
4TH CLUTCH

COUNTERSHAFT

4TH GEAR

COUNTERSHAFT

2ND GEAR
2ND GEAR

ONE-WAY CLUTCH
COUNTERSHAFT
SECONDARY

DRIVE GEAR

SECONDARY DRIVEN GEAR

(cont'd)ProCarManuals.com

Description

Power Flow (cont'd)

Position

1. The hydraulic pressure is applied to the reverse clutch. Power is transmitted from the mainshaft reverse gear via the

reverse idler gear to the countershaft reverse gear.

2. The rotation direction of the countershaft reverse gear is changed via the reverse idler gear in the rear cover.

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

REVERSE IDLER

GEAR

TORQUE CONVERTER
MAINSHAFT REVERSE

GEAR

COUNTERSHAFT

REVERSE GEAR

MAINSHAFT

REVERSE GEAR

REVERSE

IDLER GEAR

MAINSHAFT

COUNTERSHAFT

COUNTERSHAFT

REVERSE GEAR

REVERSE CLUTCH

SECONDARY DRIVEN GEAR
SECONDARY

DRIVE GEARProCarManuals.com

Description

The hydraulic control system is controlled by the ATF pump, valves, and accumulators in the valve bodies. The ATF pump

is driven by splines on the end of the torque converter which is attached to the engine.

Fluid from the ATF pump flows through the regulator valve to maintain specified pressure through the main valve body to

the manual valve, directing pressure to each of the clutches.

The valve body includes the main valve body, the secondary valve body, the ATF pump body, the regulator valve body,

the throttle valve body, and the accumulator body. The throttle valve body is joined with the linear solenoid.

The shift control solenoid valves A and B are bolted to the secondary valve body. The lock-up control solenoid valve assem-

bly is bolted to the outside of the torque converter housing.

ATF PUMP BODY

ACCUMULATOR BODY

SHIFT CONTROL

SOLENOID VALVE

A/B

REAR COVER

REGULATOR VALVE

BODY

THROTTLE VALVE BODY

SECONDARY VALVE BODY

MAIN VALVE BODY

ATF PASSAGE

NOTE: The illustration shows '96 model; '97 - '98 models are similar.
Hydraulic ControlProCarManuals.com

Hydraulic Control

ATF Pump Body

The ATF pump body is located on the torque converter housing. The ATF pump body consists of the ATF pump gears, the

relief valve, the lock-up control valve, the lock-up timing valve, and the torque converter check valve. The torque converter

check valve is located between the ATF pump body and the torque converter housing.

Accumulator Body

The accumulator body is located on the torque converter housing next to the ATF pump body. The accumulator body

houses the 3rd accumulator piston and the 4th accumulator piston.

Regulator Valve Body

The regulator valve body is located on the ATF pump body. The regulator valve body consists of the regulator valve, the

cooler relief valve, and the lock-up shift valve.

REGULATOR VALVE

BODY

4TH ACCUMULATOR
REGULATOR VALVE

3RD ACCUMULATOR
ATF PUMP BODY

RELIEF VALVE

TORQUE CONVERTER

CHECK VALVE
LOCK-UP CONTROL

VALVE

LOCK-UP TIMING

VALVE

COOLER RELIEF

VALVE

ACCUMULATOR BODY

NOTE: The illustration shows '96 model; '97 - '98 models are similar.

(cont'd)ProCarManuals.com

Stator Reactio n Hydrauli c Pressur e Contro l
Hydrauli c pressur e increas e fro m torqu e is performe d b y th e regulato r valv e usin g stato r torqu e reaction . Th e stato r shaf t
i s spline d wit h th e stato r i n th e torqu e converter , an d it s ar m en d contact s th e regulato r sprin g cap . Whe n th e vehicl e i s
acceleratin g o r climbin g (Torqu e Converte r Range) , stato r torqu e reactio n act s o n th e stato r shaft , an d th e stato r ar m
pushe s th e regulato r sprin g ca p in th e directio n o f th e arro w in proportio n t o th e reaction . Th e stato r reactio n sprin g com -
presses , an d th e regulato r valv e move s t o increas e th e lin e pressur e whic h i s regulate d b y th e regulato r valve . Th e lin e
pressur e reache s it s maximu m whe n th e stato r torqu e reactio n reache s it s maximum .
TORQUE CONVERTE R
REGULATOR VALV E
REGULATO R VALV E
BOD Y
STATO R
(Inside torqu e converter )
REGULATOR
SPRING CAP
STATOR SHAFT ARM
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