Civic Coupe L4-1595cc 1.6L DOHC (VTEC) MFI (1999)
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Clutch: Description and Operation
GENERAL
Clutches The four-speed automatic transmission uses hydraulically-actuated clutches to engage or disengage the transmission gears. When 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 the steel plates, and they are free to slide past each other. This allows the gear to spin independently on
its shaft, transmitting no power.
1ST CLUTCH
The 1st clutch engages/disengages 1st gear, and is located at the end of the mainshaft, just behind the right side cover. The 1st clutch is supplied
hydraulic pressure by its ATF feed pipe within the mainshaft.
2ND CLUTCH
The 2nd clutch engages/disengages 2nd gear, and is located at the middle of the mainshaft. The 2nd clutch is joined back-to-back to the 4th clutch.
The 2nd clutch is supplied hydraulic pressure through the mainshaft by a circuit connected to the internal hydraulic circuit.
3RD CLUTCH
The 3rd clutch engages/disengages 3rd gear, and is located at the end of the countershaft. The 3rd clutch is supplied hydraulic pressure by its ATF
feed pipe within the countershaft.
4TH CLUTCH
The 4th clutch engages/disengages 4th gear, as well as reverse gear, and is located at the middle of the mainshaft. The 4th clutch is joined
back-to-back to the 2nd clutch. The 4th clutch is supplied hydraulic pressure by its ATF feed pipe within the mainstay.