Service manual

Group 170 Preventive Maintenance
5
Check Oil Level in Automatic Transmission
Before working on a vehicle, set the parking brakes,
place the transmission in neutral, and block the
wheels. Failure to do so can result in unexpected
vehicle movement and can cause serious personal in-
jury or death.
Note: For further information refer to “Transmission”
page 12.
For further information concerning component specifica-
tions see service information in Group 1, “Oil and Filter
Change Intervals for Volvo Components, All Models”,
Publication Number 175-001, and any appropriate ven-
dor literature.
Transmission fluid cools, lubricates, and transmits hy-
draulic power. Always maintain proper fluid level. If fluid
level is too low, the torque converter and clutches do not
receive an adequate supply of fluid and the transmission
overheats. If the level is too high, the fluid aerates caus-
ing the transmission to shift erratically and overheat.
Fluid may be expelled through the breather or dipstick
tube when the fluid level is too high.
Transmission fluid check:
1 Clean all dirt from around the end of the fluid fill
tube before removing the dipstick. Do not allow dirt
or foreign matter to enter the transmission. Dirt or
foreign matter in the hydraulic system may cause
undue wear of transmission parts, make valves
stick, and clog passages. Check the fluid level using
the following procedure and record the level in your
maintenance log.
2 Always check the fluid level reading with the engine
running at least twice. Consistency is important to
maintaining accuracy of the reading. If inconsistent
readings persist, check the transmission breather to
be sure it is clean and unclogged.
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