Fig. 25 Engine air filter maintenance
1
Filter housing
2
Air filter element
3
Filter cap
4
Spring retaining flap
5
Dust evacuating valve
6
Maintenance indicator
7
Reset knob for the maintenance indicator
8
Red zone indicator scale
9
Indicating piston of the maintenance indi‐
cator
10
Valve part
11
Drain slit
Checking contamination of the air filter:
Air filter maintenance is necessary when the yellow piston inside the maintenance indicator
6
rea‐
ches the red zone.
➤ Check the air filter maintenance indicator.
If the yellow piston reaches the red zone, clean or replace the filter insert
2
.
Cleaning the air filter:
The dust evacuator valve
5
must be at the bottom. The dust evacuation valve is on the filter
cap
3
.
1. Press both spring retaining flaps
4
together and remove the filter cap
3
.
2. Withdraw the filter element
2
.
3. Clean the filter housing
1
, filter cap
3
and sealing surfaces.
4. To empty the dust evacuator valve
5
:
■ Pinch the valve part
10
above the drain slit
11
(drain slit opens).
■ Remove any dust clumps.
■ Clean the slit.
10 Maintenance
10.3 Engine
76
Service Manual Screw Compressor
M43
No.: 9_9432 02 E
RAMIRENT
