Volvo DD25, Product Manual, Page: 20 / 32

Service and maintenance 18
Air Filter Restriction
Air Filter Restriction
Hydraulic Filter Restriction Indicator
Hydraulic Filter Restriction Indicator
Hydraulic filter restriction indicator mounted directly to the filter head for
visual inspection between filter changes.
Customer benefit
• Restriction Indicator allows the operator and maintenance personnel to
monitor filter efficiency between filter change requirements.
Available for DD25
(036)
()
()
Air filter restriction indicator is mounted directly to the air cleaner for easy
access and for operator monitoring of the air cleaner elements condition.
This eliminates the need for air cleaner inspection by opening the filter
housing.
Customer benefit
• The air filter restriction indicator gives the operator the indication of the
air cleaner element condition as a dirty element reduces engine
performance.
• The operator also can decide when service is needed eliminating the
need for opening the air filter assembly increasing the possibility of
ingesting dirt directly into the engines air intake.
Available for DD25
(044)
()
()