1998 ACURA INTEGRA Service Repair Manual

l'
t
LNI Position
Hydraulic pressure is not applied to the clutches. Power is not transmitted to the countershaft.
[] Position
Hydrsulic pressure is not applied 10 the clutches. Power is not transmitted to the countershaft.
The countershaft is locked by the parking brake pawl interlocking the parking gear.
TOROUE CONVERTEB
PARKING GEAR
REVERSE SELECTOR
REVERSE GEAR
REVERSE SEI.ECTORHUB
SERVO VALVE/SHIFT FORK SHAFT
{cont'd)
14-9

Description
Power Flow (cont'dl
E] Position Acceleration
In f position, hydraulic pressure is applied to the 1st clutch and the 'lst-hold clutch.
The power flow when accelerating is as follows:
1 . Hydraulic pressure is applied to the 1st clutch on the mainshaft and power is transmitted via the 1st clutch to the
mainshalt '1st gear.
2. Hydraulic pressure is also applied to the 1st-hold clutch on the sub-shaft. Power transmitted to the mainshaft 1st
gear is conveyed via the countershaft 1st gear to the one-way clutch, and via the sub-shaft 1st gear to the 1st-hold
clutch. The one-way clutch is used to drive the countershaft, and the lst-hold clutch drives the countershatt via
the 4th gears.
3. Power is transmitted to the final drive gear, which drives the final driven gear.
SUB-SHAFT 4TH GEAR
1ST-HOLD CLUTCHSUB-SHAFT
MAINSHAFT 1ST GEAR
1ST CLUTCH
MAINSHAFT
COUNTERSHAFT
ONE-WAY CLUTCH
PARKING GEAR
1ST GEAR
SUB-SHAFT 1ST GEAR
FINAL DRIVEN GEAR
14-10
'l
t

\E Position Deceleration
The power flow when decelerating is as follows;
1. Rolling resistance from the road surface goes through the front wheels to the final drive gear, then to the sub-shaft'lst gear via the 4th gear, and 1st-hold clutch which is applied during decelerarion.
2, The one-way clutch disengages at this time because the application of torque is reversed.
3. The counterforce conveyed to the countershaft 4th gear turns the sub-shaft 4th gear via the mainshaft 4th gear.At this time, since hydraulic pressure is also applied to the 1st clutch, counterforce is also transmitted to the main-shatt. As a.esult. engine braking can be obtained with 1st gear.
CLUTCH
SUB.SHAFT4TH GEARSUB-SHAFT 1ST GEAR
t
TOROUE CONVERTER
FINAL ORIVE
SUB.SHAFT
1ST CLUTCH
MAINSHAFT
COUNTERSHAFT
REVERSE SELECTOR HUB
REVERSE SELECTOR
4TH GEAR
(cont'dl
14-11
\
FINAL ORIVEN GEAR

Description
Power Flow (cont'd)
@ Position
E Position is provided to drive only 2nd gear.
'1. Hydraulic pressure is applied to the 2nd clutch on the mainsha{t and power is transmitted via the 2nd clutch to the
mainshaft 2nd gear.
2. power transmifted to the mainshaft 2nd gear is convey€d via the countetshaft 2nd gear, which drives the countershaft.
3. Power is transmitted to the tinal drive gear, which drives the final driven gear.
NOTE:
Hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of the 2nd gear exceeds that of'lst gear, power from 1st gear is cut off at the one-way clutch
TOROUE CONVERTER2ND CLUTCH
MAINSHAFT
FINAL DRIVE GEAR
14-12
FINAL DRIVEN GEAR
.a
t
{

I
t
In @ or @ position, the optimum gear is automatically selected from 1st, 2nd, 3rd and 4th gears, accororng ro con-ditions such as the balance between throttle opening (engine load) and vehicle speed.
[Dn] or lDil Posirion, tsr geal
1. Hydraulic pressure is appiied to the 1st clutch, which rotates together with the mainshaft, and the mainshaft 1stgear 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 final drive gear, which drives the final driven gear.
NOTE:
In lDr'l or lDil position, hydraulic pressure is not applied to the 'tst-hold clutch.
TOROUE CONVERTER
1ST CLUTCH
MAINSHAFT
FINAL ORIVE GEAR
COUNTEBSHAFT
ONE-WAY CLUTCH
PARKING GEAR
\
14_13
,
FINAL DRIVEN GEAR

Description
Power Flow (cont'd)
lD+l or DglPosition, 2nd gear
1. Hydraulic pressure is applied to the 2nd clutch, which rotates together with the mainshaft, and the mainshaft 2nd
gear rolares.
2. Power is transmitted to the countershaft 2nd gear, which drives the countershaft
3. Power is transmitted to the final drive gear, which drives the final driven gear.
NOTE:
In @ or f_fl position. 2nd speed, hydraulic pressure is also applied to the 1st clutch, but since the rotation speed
ot 2nd gear exceeds that of 1st gear, power from lst gear is cut off at the one-way clutch
TOROUE CONVERTER
MAINSHAFT
COUNTERSHAFT
FINAL DRIVE GEAR
L
2ND CLUTCH
14-14
FINAL DRIVEN GEAR

I
I
I
lDr or Drl Position, 3rd gear
1 . Hydraulic pressure is applied to the 3rd clutch. Power from the mainshaft 3rd gear is transmitted to the countershaft3rd gear.
2, Power is transmitted to the final drive gear, which d.ives the linal driven gear.
NOTE:
In @ or @] position, 3rd speed, hydraulic pressure is also applied 10 the 1st clutch, but since the rotarron speedof 3rd gear exceeds that ot 1st gear, power from lst gear is cut ott at the one-way clutch.
TOROUE CONVERTER
MAINSHAFT
COUNTERSHAFT
{cont'd}
14-15
MAINSHAFT 3RD GEAR
3RD CLUTCH

Description
Power Flow (cont'd)
E Position, 4th goal
1. Hydraulic pressure is applied to the 4th clutch. which rotates together with the mainshaft. and the mainshaft 4th
gear rotales.
2. Power is transmitted to the countershaft 4th gear, which drives the countershaft'
3. Power is transmitted to the final drive gear, which drives the tinal dtiven gear'
NOTE:
ln @ position, 4th speed, hydraulic pressure is also applied to the lst clutch, but since the rotation speed of 4th
gear exceeds that of '1st gear, power from 1st gear is cut ofl at the one-way clutch
TOROUE CONVERTERMAINSHAFT 4TH GEAR
4TH CLUTCH
MAINSTIAFT
COUNTENSHAFT
{
14-16
L