Volvo VHD - Manual (Page 51)

Pre-Trip Inspection and Daily Maintenance 45
WARNING
When draining the air tanks, do not look
into the area of the draining air. Dirt or
sludge particles may be in the air stream
that could cause eye injury.
Empty out the air tanks daily. With the air
system fully charged and with the engine
shut off, listen for air leaks.
W5001203