Volvo 50-42LE transmission. Manual — part 12

AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

47

Copyright © 2004 ATSG

Figure 55

14. Remove the park pawl pin and return spring.
Remove the park pawl as shown in Figure 55.
Refer to Figure 56 to see this assembly
removed from the case.
15. Remove the two B4 accumulator retaining
plate bolts and plate, using a 30 torx bit, as
shown in Figure 57.
The bolt on the left anchors the sleeve and
parking rod return spring, as shown in the
close-up in Figure 58. Note: The bolt on the
left is 22mm long. The bolt on the right is
13.5mm long. CAUTION: B4 accumulator
is spring loaded in your direction.
16. Remove the B4 accumulator cap, as shown in
Figure 59.

TRANSMISSION DISASSEMBLY

CONTINUED

Continued on Page 48

REMOVED

Park pawl return spring

Park pawl

Park pawl pin

Figure 56

Pin in pic

Park pawl pin

and return spring

Park pawl

Figure 57

B4 accumulator retaining plate

B4 accumulator cap

Figure 59

B4 accumulator retaining plate

Parking rod return spring and sleeve

Figure 58

AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

48

17. Remove the B4 accumulator piston and spring
as shown in Figure 60.
Refer to Figure 61 to see this assembly
removed from the case.
18. Remove the park lock pin from the case.
Remove the Underdrive planetary thrust
washer and bearing as shown in Figure 62
and Figure 63.
19. Remove the Underdrive planetary geartrain,
by pulling it straight forward, and set it aside
for later disassembly, as shown in Figure 64.

TRANSMISSION DISASSEMBLY

CONTINUED

Figure 60

B4 accumulator piston and spring

B4 accumulator piston and spring

Figure 61

Figure 62

Park lock pin

Underdrive planetary thrust

washer and bearing

Underdrive planetary thrust

washer and bearing

Figure 63

Figure 64

Underdrive planetary assembly

Continued on Page 49

Copyright © 2004 ATSG

AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

49

Copyright © 2004 ATSG

F3 Freewheel

14. Remove the Underdrive clutch drum by
grasping the sun gear and turning it counter
clockwise while pulling it forward as shown in
Figure 65.
15. Place the Underdrive drum on the bench and
remove the bearing from the rear of the drum
as shown in Figure 66.
16. Grasp the B4 Underdrive Brake Band, in the
area of the arrow as shown in Figure 67, and
pull it forward to remove it from the case.
17. Remove the snap ring and pull the F3
freewheel forward as shown in Figure 68.
18. Remove the Anti-rattle clip as shown in
Figure 69.

TRANSMISSION DISASSEMBLY

CONTINUED

Continued on Page 50

Underdrive clutch drum

Remove the bearing from the rear of

the Underdrive drum

Figure 65

Figure 66

Figure 67

Sun gear

E

T

A

T

O

R

B4 Underdrive Brake Band

Snapring

Anti-rattle clip

location (installed)

Figure 68

Figure 69

Anti-rattle clip

AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

50

19. Remove the two 10mm headed bolts that are
identified with an "A", shown in Figure 70.
Note: the bolt lengths are 16mm.
20. Remove the remaining seven 12 mm headed
bolts as shown in Figure 70. Note: the bolt
lengths are as follows: B= 25mm, C= 48mm
and D= 45mm. Using a hammer gently tap
the rear cover off of the case.
21. Remove the 27 torx headed turbine sensor
bolt and sensor. Note: the bolt length is
13mm. Remove the C1-C2 drum thrust
bearing and washer. Remove the C1-C2 drum
as shown in Figure 71. Refer to Figure 72 to
see a closeup of the C1-C2 washer and
bearing.
22. Remove the C2 hub and sun gear assembly as
shown in Figure 73.
23. Refer to Figure 74 for a view of the C2 hub
with the front and rear bearings.

TRANSMISSION DISASSEMBLY

CONTINUED

Continued on Page 51

Figure 70

Figure

A

A

B

B

C

D

C

D

D

Figure 71

Turbine Sensor

C1-C2 Drum

C1-C2 Drum

Thrust bearing

and washer

C1-C2 Drum Thrust bearing

and washer removed

Figure 73

Figure 72

Copyright © 2004 ATSG

C2 Hub and sun gear