Replacing Hydraulic Oil Return Filter; Replacing Cartridge For Drain Filter - Volvo EC330B Operator's Manual

A B
C
D
S80434
S82233
Service and maintenance
Hydraulic system

Replacing hydraulic oil return filter

Replace the return filter after the first 250 hours and then ev-
ery 1000 hours.
WARNING!
Before removing cover (A), release the internal pressure of
the tank.
1 Unscrew cover (A)
2 Remove O-ring (B), spring (C) and bypass valve (D), and then
pull out filter.
3 Clean the dismantled parts.
4 Install a new filter and all parts.
When mounting cover (A), fasten the bolts while pressing
down on the cover.
5 Run the engine at low idle speed for 10 minutes to remove the
air.
6 Stop the engine.

Replacing cartridge for drain filter

Replace the cartridge for the drain filter after the first 250
hours and then every 500 hours.
1 Place a container under the drain filter, and turn the filter coun-
terclockwise to remove it.
2 Fill the new filter with oil, thinly coat O-ring with oil.
155