MNL-0391
April 26, 2007 Page 17
BAUER
COMPRESSORS
4. Remove Allen screws (7) and take off valve head cover (6).
5. To lift pressure valve out of valve head put two flat head screwdrivers into grooves of the pressure
valve body. See Figure 3-9. If necessary turn valve to loosen it, using a 13mm open end wrench on
the flat surfaces of the valve.
6. Lift out pressure valve (3) together with O-Ring (4).
7. Check O-Ring for damage and wear, replace if necessary. Put O-ring into the valve head.
8. To reinstall pressure valve Insert valve (3) and install valve head cover (6).
9. Fasten valve head cover to valve head with Allen screws and washers (8).
10. Screw in torque stud (1) and torque to 14 ft-lbs (20Nm).
3.4 Repair and Troubleshooting
3.4.1 General Repair Instructions
Preventive maintenance usually involves replacing the valves, gaskets and sealing rings as well as carry-
ing out the maintenance work.
Repair work can be carried out on the compressor block to a certain extent but a certain experience and
skill level is necessary.
It should be noted however, that
• No repair should be carried out on the crankshaft or bearings.
• Safety valves are not repaired but always replaced completely.
Figure 3-9 Removing the 3rd Stage Valves
Pressure Valve Intake Valve
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