Shift Phase - 1-2 Shift Phase 2
The B1 (7) (F ig. 18) pressur e acting on the end fa ce
of the shift pressure shift valve (3) is r eplaced by the
working pr essu re (p-A). The shift pressure is also
routed to the spr ing end of th e holding va lve (4) and
the holding valve downshifts. The line pressure is
then r outed to the com mand valve (5).
Fig. 18 Shift Phase - 1-2 Shift Phase 2
1 - 1-2/4-5 SHIFT SOLENOID 5 - 1-2/4-5 COMMAND VALVE
2 - 1-2/4-5 OVERLAP VALVE 6 - DRIVING CLUTCH K1
3 - 1-2/4-5 SHIFT PRESSURE SHIFT VALVE 7 - HOLDING CLUTCH B1
4 - 1-2/4-5 HOLDING PRESSURE SHIFT VALVE 8 - SHIFT PRESSURE REGULATOR VALVE
21 - 28 AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION VA
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