5.5 Pistons and piston rings
To disassemble a piston:
LP piston
A Remove all cooler covers except the cover for the air outlet.
B Remove the cylinder cover. (It is not necessary to remove the valves.)
C Loosen the crankshaft bearing bolts and remove the crankshaft housing.
D Extract the piston and connecting rod from cylinder.
HP piston
A Loosen the crankshaft bearing bolts and remove the crankshaft bearing housing.
B Rotate the crank pin to the bottom and remove the connecting rod and piston through the crank case.
Reassemble in the reverse order.
Important: It is very important to protect the crank pins, since even minor damage may necessitate replacement of the crankshaft. Therefore, always wrap a cloth around the exposed crank pins while working in the crankcase.
Fig. 5.2 Piston rings
- 1. Personal safety
- 2. About the compressor
- 2.1 Construction
- 2.2 Safety equipment
- Important: The safety valves, bursting disc and any other safety equipment must be inspected regularly.
- 3. Installation and operation
- 3.1 Installation instructions
- 3.2 Cooling water system
- 3.3 Start-up
- 3.4 Operation
- 3.5 Stopping
- 4. Operational failures
- Important: When inspecting the valves, loosen the clamp bolt on the valve cover before removing the cover.
- Valve overhaul and maintenance
- 5.3 Lubrication system
- 5.4 Bearings
- 5.5 Pistons and piston rings
- 5.7 Coolers
- 5.8 Filters