Waters Xevo TQ-S Operator's, Overview And Maintenance Manual page 122

4 Maintenance Procedures
To remove the roughing pumps' oil demister elements:
1. Use the 6-mm Allen wrench to remove the 4 bolts securing the exhaust
flange to the roughing pump.
Securing bolt
Exhaust flange
2. Using both hands, carefully remove the exhaust flange and oil demister
element from the roughing pump.
122 February 28, 2014, 715002212 Rev. C
Oil demister element
TP02694
TP02693