Volvo 50-42LE transmission. Instruction - page 20
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
79
153. Remove the bearing race and the two 30 torx
bolts retaining the C1 accumulator cover.
Caution: The cover is spring loaded. Note:
The bolt lengths are 14mm. Once the cover is
off, remove the spring and piston from the
cover. See Figure 211.
154. See Figure 212 for a view of the accumulator
assembly completely dis-assembled.
155. Inspect the needle bearing in the rear cover and
replace the three sealing rings as shown in
Figure 213. Note: The early design rear cover
has an aluminum sleeve which requires steel
sealing rings. ATSG recommends the late
design, which is the steel sleeve.
156. Lubricate the rear cover shown in Figure 214,
replace the C1 accumulator piston o-ring and
install it into the rear cover. See Figure 215.
Figure 214
Figure 212
Figure 211
Figure 215
Figure 213
Copyright © 2004 ATSG
Needle bearing
C1 accumulator
cover
Crush sleeve
Bearing race
Lock nut
SUB-ASSEMBLIES
"REAR COVER"
C1 accumulator
piston
O-ring
Cover and
bolts
Spring
Steel sleeve uses
3 Teflon sealing rings
Lubricate
C1 accumulator
piston
Bolts
Continued on Page 80
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
80
157. Install the C1 accumulator spring over the
accumulator piston as shown in Figure 216.
158. Assemble the C1 accumulator cover into the
rear cover and torque the 30 torx bit bolts to
70-100 in. lb. See Figure 217.
159. Install the Bearing race, using some assembly
grease. See Figure 218.
160. Place the C1 / C2 drum onto the rear cover and
air check the clutches using 80-100psi. of air
pressure. See Figure 219. Refer to Figure 220
to identify the air check ports.
Figure 217
Figure 218
Figure 216
C1 accumulator
spring
Bearing race
"A"
SUB-ASSEMBLIES
"REAR COVER Contd."
C1 accumulator
cover
Bolts
"B"
"C"
"D"
Figure 219
Figure 220
"A"= C1 clutch
C1/C2 AIR CHECKS
"B"= C2 clutch
"C"= lube
"D"= C1 clutch
Note: When air checking the C1 clutch thru
the D port, you must cover the A port
and vice-versa. The C1 accumulator
will stroke when the C1 clutch is applied.
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
81
VALVE BODY EXPLODED VIEWS
AND IDENTIFICATION OF COMPONENTS
Refer to Figure 221 for Solenoid identification and locations on the valve body.
Refer to Figure 222 for valve identification and locations in the "Upper" valve body.
Refer to Figure 223 for valve identification and locations in the "Center" valve body, "Front" side.
Refer to Figure 224 for valve identification and locations in the "Center" valve body, "Rear" side.
Refer to Figure 225 for valve identification and locations in the "Lower" valve body, "Front" side.
Refer to Figure 226 for valve identification and locations in the "Lower" valve body, "Rear" side.
Refer to Figure 227 for illustrations of the typical spacer plates.
Refer to Figure 228 for the check valve and check ball locations in the "Lower" valve body.
Refer to Figure 229 for the screen locations in the "Center" valve body, "Upper" valve body side.
Refer to Figure 230 for the check valve and check ball locations in the "Center" valve body, "Lower"
valve body side.
Refer to Figure 231 for bolt identification and locations for the "Lower" valve body.
SUB-ASSEMBLIES
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
82
99
99
22
2 2
2 2
11
9
1
1
5
2
B
1
9
B
1
9
Shift Solenoid
Number 1
Shift Solenoid
Number 2
Pressure Control
Solenoid
TCC Solenoid
Figure 221
SOLENOID IDENTIFICATION
AND BOLT LOCATIONS
8mm Head
10mm long
8mm Head
35mm long
8mm Head
10mm long
8mm Head
35mm long
Pressure control
solenoid retainer
