80
Operating Manual Crawler Excavator TC37
Care and Maintenance
7
Cartridge maintenance intervals
The air filter main cartridge must be replaced if, during
operation, the filter maintenance indicator lamp
(50/21) in the instrument panel lights up.
Replace the air filter safety cartridge:
– after the third maintenance of the main cartridge
– after 2 years of operation at the latest
– if the service indicator switches on after the main
cartridge has just been serviced
– if the main cartridge is damaged
– if the safety cartridge is damaged.
Changing the main cartridge
• Open the tension brackets (51/5) and remove the
cover (51/1) along with the dust ejection valve.
• Withdraw the dirty air filter cartridge (51/2) by
carefully turning and tilting and dispose of it.
• Note down the date of maintenance on the safety
cartridge.
• Clean the filter housing (51/4) with a damp cloth,
especially the seal area for the air filter cartridge.
• Check whether the new air filter cartridge is
damaged.
• Mount the air filter cartridge into the filter housing
by slightly turning.
• Re-mount the cover along with the dust ejection
valve to the bottom and re-fasten with tension
brackets (51/5).
Fig. 50
Maintenance switch indicator lamps
0
4/4
h.
R
HR3.7-04-54
21
Attention
A brief delay in maintenance does not result
in lower filter efficiency.
Fig. 51
Changing air filter cartridges
HR1253
5
1
2
3
4
Machine damage
due to dust being drawn into the engine.
• Do not install damaged air filter cartridges.
