MTU 12 V 2000 M40A Operating Instructions Manual page 26

Shielding of fuel filters and lube-oil filters
Shielding with plastic ring
The plastic ring (1) precludes lateral spray.
The fluid is diverted to the catch basin whereby the pressure is greatly reduced.
Shielding by structural overhang
The overhang (1) prevents lateral spray.
The fluid is diverted to the catch basin whereby the pressure is greatly reduced.
26 | General Information | MS150031/05E 2013-01