Volvo 50-42LE transmission. Instruction - page 14
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
55
Copyright © 2004 ATSG
42. Rotate the Manual shaft until the tab on the
park rod aligns with the slot in the in the
manual shaft. Lift the park rod up and pull it
forward to remove it from the case as shown in
Figure 93.
43. Push the manual shaft down thru the case to
remove it as shown in Figure 94.
44. Refer to Figure 95 to view the manual shaft and
the park rod removed from the case.
45. Remove the snap ring retaining the B4 servo
assembly into the case, as shown in Figure 96.
46. Refer to Figure 97, to view the B4 servo and
it's related parts.
TRANSMISSION DISASSEMBLY
CONTINUED
B4 servo assembly
Figure 93
Figure 94
Figure 96
Figure 97
B4 servo assembly removed
Manual shaft
Park rod
Manual shaft
Push the Manual
shaft this direction
Push the park
rod this direction
Manual shaft
Park rod
Figure 95
Copyright © 2004 ATSG
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
56
47. Remove the snap ring and B2 clutch assembly
as shown in Figure 98.
48. Remove the snap ring and pressure plate above
the B1 clutch as shown in Figure 99. Caution:
The pressure plate is spring loaded in the
direction facing you.
49. Remove the return spring assembly as shown in
Figure 100.
50. Remove the remaining B1 clutch assembly as
shown in Figure 101.
51. Remove the pump to B2 second coast brake
hub thrust washer as shown in Figure 102.
SUB-ASSEMBLIES
"PUMP"
Figure 98
Figure 99
Figure 100
Figure 101
Figure 102
Thrust washer
Continued on Page 57
Copyright © 2004 ATSG
B1 upper pressure plate
Return spring assembly
Remove B1 clutch assembly
B2 clutch assembly
Caution
spring loaded
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
57
52. Using a suitable press, remove the snap ring
and B1 return spring assembly, as shown in
Figure 103.
53. Refer to Figure 104 for piston identification.
54. Apply compressed air to the passage shown in
Figure 105 and remove the B2 piston. Caution:
Using compressed air may cause the piston to
jump out of the housing.
55. Apply compressed air to the passage shown in
Figure 106 and remove the B1 piston.
56. Using a 30 torx bit, remove the 14 bolts that
retain the piston housing to the pump. Note:
The bolt length for the smaller diameter bolt
is 16mm long. The remaining bolts are 13mm
long. Inspect stator bushings and replace
as necessary. See Figure 107.
Continued on Page 58
B1 return spring
Figure 103
Figure 105
Figure 104
Figure 106
B1 piston
Figure 107
Apply air
pressure
SUB-ASSEMBLIES
"PUMP" CONTINUED
B2 piston
Remove
B2 piston
Apply air
pressure
Remove
B1 piston
Piston
housing
Snap ring
Smaller
diameter bolt
16mm long
Stator
bushings
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
58
57. Remove the pump plate as shown, in Figure
108, and check for wear or scoring.
58. Using a straight edge, check the pump gear to
pump face clearance, as shown in Figure 109.
Clearance must be between .001"-.003." The
maximum clearance is .004." Using a feeler
gage check the outer pump gear to pump body
clearance. Clearance must be between .003"
and .006." The maximum is .008."
59. Inspect the outer pump gear and the torque
converter lug area for wear, as shown in
Figure 110.
60. Inspect the pump body for wear, and remove
the pump o-ring as shown in Figure 111.
61. Check the pump bushing for wear and replace
the front seal, as shown in Figure 112.
Figure 108
Figure 110
Figure 112
Continued on Page 59
Pump bushing
Figure 111
Pump body check
Figure 109
.0
03
"
Pump gear clearance check
Straight edge
Feeler gage
Pump gear check
Pump plate
.0
0
3
"
SUB-ASSEMBLIES
"PUMP" CONTINUED
Pump seal
Pump o-ring