Hydraulic Valve Function - Honda MUV700 big red Service Manual

TECHNICAL FEATURES
HYDRAULIC VALVE FUNCTION
• AIT Clutch Pressure Control Solenoid Valve {linea r Solenoid Valvel
The AfT clutch Pressure Control (PC) solenoid valv e controls the vehicle creep by diverting the hydraulic pressure that
flows to the entire clutch system to the linear valve.
• Sh ift Solenoid V alves (A and B)
The shift solenoid valves control the shift timing by supplyin g and shutting off hydraulic pressure to activate the shift
valves.
• Shift Valves (1·2 and 2-3)
The shift valves switch the hydraulic circuits to the three clutches.
• Orifice Control Valve (2nd and 3rd)
The orifice control valves operate when clutch fluid pressure rises during shifting . It releases the pressure to reduce
shift shock.
• Emergency Valve
The emergency valve is used when the hydraulic pressure is shut off by a faulty clutch PC solenoid valve (stuck;
mechanical lock ), and the vehicle is prevented from moving. Opening the bypass oil circuit manually supplies hydraulic
fluid to the system . (In thi s case, the transmission is held in 2nd range and the vehicle creeps dur ing idl i ng .)
TORQUE CONVERTER
Alternator
3rd SHIFT CLUTCH
2nd SHIFT CLUTCH
3rdOAIFICE
CONTROL
VALVE
,
2-3 SHIFT VALVE
Fr:~~~
2nd ORI FICE
CONTROL
VALVE
~
I==~
SHIFT
SOLENOID
VALVE B
,
1st SHIFT CLUTCH
,
SHIFT
SOLENOID
VALVE A
1-2 SHIFT
VALVE
Cylinder head
:=~~~ll==JLc ~ , ~ a l n ~ k : ' ~ h ~ a : f t ~ ===~jE~
Sub-transmission
~~~~~;~;~~~~~~
OIL COOLER RELIEF
VALVE
AfT
CLUTCH PC
OIL PUMP
SOLENOID VALVE
L _ r
OIL FILTER
OIL STRAINERS
2-9