17. Hydraulic reservoir fill and level.
Remove subfloor plate (see WP 0295 00).
Before operation, remove bayonet gage (23) and check that oil level in the reservoir measures up to the FULL mark. If
necessary, remove fill cap (24) and add oil (see Table 2) until oil level reaches FULL on bayonet gage.
Install bayonet gage (23) and fill cap (24).
Operate hydraulic system until hydraulic oil reaches operating temperature. Shut down all systems and check oil level
again. Add oil, if necessary.
Install subfloor plate (see WP 0295 00).
18. Hydraulic reservoir filter.
Remove subfloor plate under rigger's seat (see WP 0297 00).
Remove eight screws (25) in filter cover (26), and remove cover.
Remove filter element (see WP 0420 00) and clean it with cleaning compound (item 9, WP 0489); then dry with
low-pressure compressed air.
Remove two preformed gaskets from between cover and filter element. Discard used gaskets and install new gaskets
(see WP 0420 00).
Install filter element (see WP 0420 00), filter cover (26), and eight attaching screws (25).
Operate hydraulic system and check for leaks. Shut down system and install subfloor plate (see WP 0297 00).