Draining the engine oil
The oil is drained directly at the engine's oil pan. This is done from a drain valve with the aid of a
separate drain hose.
Fig. 53 Draining the engine oil
1
Oil filler neck cover, engine oil
2
Engine oil sump
3
Service opening, engine oil drain (in floor
pan)
4
Cover, service opening
5
Drain hose with quick-release coupling
6
Oil drain valve
1. Remove the oil oil filler cover.
2. Remove the cover of the service opening for the engine oil drain.
3. Provide a receptacle beneath the appropriate opening in the floor pan.
4. Lead the free end of the drain hose
4
through the hole in the floor pan and into the receptacle.
5. Remove the protective cap from the oil drain valve
6
.
6. Screw the drain hose with quick-release coupling onto the oil drain valve.
The valve opens and oil drains through the hose.
7. When all the oil has drained out, uncouple and remove the drain hose.
8. Replace the protective cap on the oil drain valve.
9. Attach the cover of the service opening.
10. Replace the plug in the filler port.
11. Close the doors.
Draining the engine oil (closed floor pan)
Compressor cooling oil and engine coolant drain lines are led to a central point outside the ma‐
chine with closed floor pan. They are located at the rear of the machine, in a recessed connection
box. The box can be accessed from below by removing a cover.
Oil is drained via a pipeline screwed into the engine block's drain point. The pipeline is closed with
a shut-off valve and secured with an additional plug.
10 Maintenance
10.4 Engine maintenance
130
Operator Manual Screw Compressor
M250 SIGMA CONTROL MOBIL
No.: 9_9570 07 USE
Option oe