Second Gear Engaged - Mercedes-Benz 2005 Sprinter Service Manual

VA
AUTOMATIC TRANSMISSION - NAG1 (Continued)
The B1 (7) pressure acting on the end face of the
shift pressure shift valve (3) is replaced by the work-
ing pressure (p-A). The rising shift pressure (p-S) at
clutch K1 (6) acts on the annular face of the overlap
regulating valve (2) and reduces the overlap pressure
regulated by the overlap regulating valve (2). When a
corresponding pressure level is reached at the hold-
ing pressure shift valve (4), this valve switches over.
1 - 1-2/4-5 SHIFT SOLENOID
2 - 1-2/4-5 OVERLAP VALVE
3 - 1-2/4-5 SHIFT PRESSURE SHIFT VALVE
4 - 1-2/4-5 HOLDING PRESSURE SHIFT VALVE
AUTOMATIC TRANSMISSION - NAG1 21 - 19

Second Gear Engaged

After the gearchange is complete, the pressure on
the end face of the command valve (5) (Fig. 16) is
reduced via the 1-2 and 4-5 shift solenoid valve (1),
and the command valve (5) is pushed back to its
basic position. Via the holding pressure shift valve
(4) the working pressure (p-A) now passes via the
command valve (5) to clutch K1 (6). The multiple-disc
holding clutch B1 (7) is deactivated (unpressurized).
The spring of the shift pressure shift valve (3) pushes
the valve back to its basic position.
Fig. 16 Second Gear Engaged
5 - 1-2/4-5 COMMAND VALVE
6 - DRIVING CLUTCH K1
7 - HOLDING CLUTCH B1