OPERATING INSTRUCTIONS RH 40 F Inspection and servicing High-pressure filters for the servo circuit and the feeding circuit of the slewing pump
Checking/cleaning the filter elements
The excavator is equipped with a high-pressure filter (40, Fig. 3-62:) for the servo circuit and another filter (41) for the feeding circuit of the slewing pump.
" Withdraw filter element (43) from housing (42).
Check filter tell-tales (1, Fig. 3-62:) regulary - at operating temperature - for indication of contamination. If the red sector is visible through transparent cap (2), the filter element must be cleaned or changed.
" Unscrew filter housing (42, Fig. 3-63:) and pour out the oil.
" Clean filter housing and contact faces at the filter head with white spirit or paraffin oil. " Insert filter element into housing (42) and attach to the filter head with a new, slightly oiled sealing ring (46). " Check the high-pressure filter for leaks after thesystem has been put into operation.
Fig. 3-62:
Read and observe: "Inspection and servicing - Safety instructions".
Fig. 3-63:
Replacing the filter elements " Detach the filter elements as described under "Checking the filter elements".
Shut off the engine. Risk of scalding from hot hydraulic oil.
" Insert new assemble.
The filter housings may also be hot.
filter
element
(43)
and
re-
" Check the high-pressure filter for leaks after putting it into operation.
Avoid skin contact. Skin contact with hydraulic oil may cause skin injury. Wear protective clothing.
gloves
and
firm
protective
Collect escaping hydraulic oil and discard without polluting the environment.
3-66
BA RH40F(3 668 020.01)-EN
