Group 177
Design and Function
Power Take-off
Volvo PTO
For further information concerning component specifica-
tions see service information in Group 1, “Oil and Filter
Change Intervals for Volvo Components,” publication
number 175–001, and appropriate vendor literature.
Volvo PTO’s mount directly to the transmission and do
not need separate oil fill and check. Make sure there is
extra oil filled in the transmission for the PTO volume.
CAUTION
Transmission oil heat exchanger should be installed
when using PTO continuously over 15 minutes at a
time or with a continuous power output over 55 kW
(75 hp). Without heat exchanger, the oil can overheat
and transmission damage may follow.
If the application has a remotely installed pump or blower
with a driveshaft connection, the driveshaft U-joints need
to be greased at every maintenance interval or more of-
ten, depending on usage. Use a lithium based grease
with EP additives and of the consistency of NLGI No. 2.
Driveshaft
For further information concerning component specifica-
tions see service information in Group 1, “Oil and Filter
Change Intervals for Volvo Components,” publication
number 175–001, and appropriate vendor literature.
Use a lithium-based grease with EP additives with a
consistency of NLGI No. 2. Do not use conventional
chassis grease.
The driveshaft U-joints must be lubricated correctly for
the bearings to receive grease. The most common case
of U-joint failure is incorrect greasing. Always make sure
that grease is coming out of all four seals. If one seal
fails to purge old grease, move the driveshaft from side
to side while applying gun pressure. This allows for
greater clearance on the thrust end of the bearing that is
not purging. New grease flushes abrasive contaminants
from each bearing and assures that the bearing is filled
properly.
Failure to correctly grease the driveshaft U-joints or
slip-joints can lead to component failure which can re-
sult in separation of the driveshaft from the vehicle. A
separated driveshaft can result in major component
damage and loss of vehicle control, and can cause
serious personal injury or death.
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