Wacker Neuson 28Z3 Service Manual

SHB 28Z3 EN – Edition 2.0 * 28z3s314.fm 3-45
Maintenance
Replacing the hydraulic oil filter
Replacing the hydraulic oil filter (return filter)
☞ Opening the tank cover
☞ Thoroughly clean the outside of return filter A
☞ Place a suitable container under the filter
☞ Unscrew cover B
☞ Collect the hydraulic oil as it drains
☞ Remove spring C if it is not seated on cover B
☞ Remove the old filter element D by means of the bracket and replace with a new ele-
ment
☞ Check the surface of the element for dirt residues and coarse particles
➥ These can be a sign of damage to the components
➥ Clean the drip and dirt collector E
☞ Carefully place a new filter element D onto the mount in the filter housing
☞ Remove dirt from the housing and the sealing surface of cover B if necessary
☞ Screw on cover B with spring C and tighten by hand
☞ Make a test run – and check for tightness!
☞ Close the tank cover
Dispose of the replaced return filter in an environmentally friendly manner
Draining condensation water from the hydraulic oil tank
Check the hydraulic oil tank after a longer standstill or every 500 service hours. Drain the
condensation water if there is any.
The hydraulic oil replacement interval must be shortened if the condensation water is not
drained regularly!
Draining the condensation water from the hydraulic oil tank:
☞ Open breather filter 54/A to release pressure
☞ Take drain hose G out of the machine
➥ Drain hose G is located in the tool compartment under the seat
☞ Connect the drain hose to service valve F
☞ Drain the condensation water (mixed with hydraulic oil) into a container
➥ Until only pure hydraulic oil comes out
☞ Close the service valve again
☞ Close the drain hose correctly again and store it
☞ Replace the filter according to the maintenance specifications
☞ Check the hydraulic oil level – see Checking the hydraulic oil level on page 3-42
☞ Fill in clean hydraulic oil – see Filling up hydraulic oil on page 3-43
Close the hydraulic oil tank correctly
A
Fig. 54: Replacing the hydraulic oil filter
B
C
D
E
Fig. 55: Service valve and drain hose
F
G

Wacker Neuson 28Z3 Specifications

General

Brand	Wacker Neuson
Model	28Z3
Category	Excavators
Language	English