K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
Valve Body: Service and Repair
Allison - Automatic Transmission
Control Valve Solenoid Replacement (Solenoid A, B)
Control Valve Solenoid Replacement (Solenoid A, B)
Removal Procedure
1. Remove the oil pan and suction filter.
2. Disconnect the internal wiring harness from the Solenoid being changed.
3. Remove the two bolts (2) that fasten reverse signal tube (1) to the control valve assembly. Remove the reverse signal tube.
Important:
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When the A/B solenoid bracket (5) is removed, there are two sets of accumulators (3) and springs (6) which may fall from their bores. Be sure to
catch them so they are not damaged.
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The A/B solenoid bracket (5) must not be modified. Note that the angle between the two bracket surfaces is less than 90 degrees. Replace the
bracket if the angle is 90 degrees or more.
4. To remove A solenoid (1) or B solenoid (8), remove three bolts (4) and the A/B solenoid bracket (5). Remove accumulators (3) and springs (6) if
they do not fall out when bracket (5) is removed.
5. Note the position of the solenoid connector and pull the solenoid (1) or (8) out of the bore in the control valve assembly. The O-ring on the
solenoid provides the resistance felt during removal.
Installation Procedure
