5714Valve for first gear manual range V1GMR Figs 515a and b and 522

The selection of first gear manual supplies line pressure to the underside passage to the ball valve,

Fig. 5.21 (a and b) Soft engagement valve (SEV), valve for first and reverse clutch, V(1 + R)GC
Fig. 5.22 Manual valve (MV), kickdown valve (KDV), throttle pressure valve (TPV), 1-2 shift valve (1-2)SV and 1-2 governor plug (1-2)GP in first gear - manual selection

causing it to move to the right. Line pressure then fills the throttle pressure lines leading to the left hand end of the 1-2 shift valve and therefore a 1-2 upshift is prevented.

5.7.15 Valves for first and reverse gear brake V(1 + R)GB (Fig. 5.20(a and b))

The selection of first gear manual position causes line pressure to dislodge the right hand ball valve to the left, thereby closing the reverse line passage from the selector valve. At the same time the left hand ball valve closes so that line pressure flow for the engagement of the first and reverse multiplate is slowed down.

The selection of reverse gear causes the right hand ball valve to be pushed by line pressure to the right and so the first gear line passage from the selector valve is closed. Similarly the left hand ball valve closes so that line pressure flow to the first and reverse brake is restricted, thus prolonging the clutch engagement period.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Post a comment