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21 - 112
AUTOMATIC TRANSMISSION - NAG1
HOLDING CLUTCHES (Continued)
1 - B1 CLUTCH
2 - EXTERNALLY TOOTHED DISC
3 - INTERNALLY TOOTHED DISC
4 - B3 CLUTCH
5 - B2 CLUTCH
6 - B3 CLUTCH PISTON
7 - B2 CLUTCH PISTON
8 - B2 CLUTCH INTERNALLY TOOTHED DISC CARRIER
9 - REAR PLANETARY GEARSET PLANETARY CARRIER
OPERATION
The holding clutches (Fig. 153) connect the annu-
lus gear, sun gear, or planetary carrier of a planetary
gear set against the transmission housing in order to
transmit the drive torque.
If the piston (16) on multiple-disc holding clutch
B1 (1) is subjected to oil pressure, it presses the
internal (3) and external discs (2) of the disc set
together. The internally toothed disc carrier (15)
locks the sun gear (14) against the housing. The
planetary pinion gears (13) turn on the sun gear (14).
If the multiple-disc holding clutch B2 (5) is actu-
ated via the piston (7), the piston compresses the disc
set. The internally toothed disc carrier (8) locks the
sun gear (12) against the housing. The planetary pin-
ion gears (11) turn on the sun gear (12).
If the multiple-disc holding clutch B3 (4) is actu-
ated via the piston (6), the planetary carrier (9) and
Fig. 153 Holding Clutches
10 - CENTER PLANETARY GEARSET ANNULUS GEAR
11 - CENTER PLANETARY GEARSET PINION GEARS
12 - CENTER PLANETARY GEARSET SUN GEAR
13 - FRONT PLANETARY GEARSET PINION GEARS
14 - FRONT PLANETARY GEARSET SUN GEAR
15 - B1 CLUTCH INTERNALLY TOOTHED DISC CARRIER
16 - B1 CLUTCH PISTON
17 - B1 CLUTCH EXTERNALLY TOOTHED DISC CARRIER
the annulus gear (10) are locked. When the multiple-
disc brake B3 (4) is actuated, the direction of rotation
is reversed.
HOLDING CLUTCH B1
DISASSEMBLY
(1) Remove snap-ring (7) (Fig. 154).
(2) Remove multiple-disc pack (6) and disc spring
(5) from outer multiple-disc carrier.
(3) Place the Multi-use Spring Compressor 8900
(8) (Fig. 154) on disc spring (3) and compress the
spring until the snap-ring (4) is exposed.
(4) Remove snap-ring (4).
(5) Remove piston (2) from the outer multiple-disc
carrier by carefully blowing compressed air into the
bore (A).
VA
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