Changing The Valves Of The 1St Stage; Changing 2Nd Stage Valves And Valves Of 1St Stage Pressure Valve; Fig. 14 Valve Head 1St Stage; Fig. 15 Valve Head 2Nd Stage - Curtis OL 512 Operation And Instruction Manual

4.5. CHANGING THE VALVES OF THE 1
The intake valve of the 1st stage is integrated into the top part of the piston. The pressure valve is fitted
between valve head and cylinder.
Changing the pressure valve
Change pressure valve of 1st stage according to
chapter 4.6.
Changing the Intake valve
- Loosen two cap nuts from tube connectors
and remove inter-cooler and after-cooler.
- Remove counter-sunk screw (1) together with
fixation nut (2) from piston head.
- Remove plate valve (3).
ND
4.6. CHANGING 2
Intake and pressure valves of the 2nd stage are
combined in one plate valve under the valve
head.
- Loosen two cap nuts from tube connectors
and remove inter-cooler and after-cooler.
- Remove four allen screws (5), together with
washer (6) from valve head (1). Remove valve
head.
- Remove gasket (2) and plate valve (3).
- When reinstalling valve check for right position.
Countersunk screw heads have to be at the top.
Instruction Manual Oil-Less Compressors
ST
STAGE VALVES AND VALVES OF 1ST STAGE PRESSURE VALVE
STAGE
Fig. 14: valve head 1st stage
Fig. 15: valve head 2nd stage
18
CAP-215