850 T-5R L5-2.3L Turbo VIN 58 B5234T5 (1995)
If the vehicle only moves slowly with high rpm. as starting in "winter" mode, and then bangs into the gear, the rear transmission cover must be replaced
according to this service bulletin.
Is the vehicle moving slowly with high rpm?
Yes:
^
Step: AA A7
No:
^
Step: AA A3
Performance test warm transmission
AA A3
-
Drive the vehicle so that the transmission reaches normal operating temperature, approx 100°C (212°F).
In workshop
Check oil temperature by using VST and test mode 5. The test can take up to 20 sec to be performed.
-
Ignition on.
-
Check the transmission oil temperature by using Diagnostic Test Mode 5. The test will take up to 20 sec.
Move the gear lever from D to R 2-4 times. If the engagement is very hard the seal ring is worn.
Note!
When repeating the D-R shift one must wait at least 3 sec in D-position to give the C2 clutch accumulator time to empty its chamber. This is
necessary to avoid an incorrect diagnose. A very quick movement, D-R-D-R normally gives hard R-engagement, even with a normal operating
transmission.
Is the engagement very hard?
Yes:
^
Step: AA A4
No:
^
Step: AA A5
Replacement of the complete rear cover including seal rings
AA A4
-
Replace the complete rear cover including seal rings, as per Accumulator pistons/sealing rings B2/C2, replacement.
Before calling Volvo Tech Hot Line: 1-800-500-5570, all fault tracing must have been performed, check sheet filled out and pressure readings taken as