GEA FK40/390 K Maintenance Manual page 43

12 I Assembly of compressor
4
Fitting the piston / connecting rods
Position in Parts list position: 2040
parts list
Tools: Spanner SW 10, piston ring plier
Working course
We recommend, cleaning the housing from the inside before assembly
2100 - Remove the connecting rod cap from the preassembled connecting rod assembly and mark it
- Apply a little oil to the cylinder bore
2040 - Insert pistons/connecting rods from below into the cylinder liners
-> In the case of TK compressors pay attention to the correct assembly position of the pistons (suction fin
grooves, see figure)
290, 300
- Install oil scraper rings in the lower groove and compression rings in the upper groove
-> Fit with the marking "TOP" facing upwards
- > The butt joints of the piston rings have to be installed min. 30° twisted to each other and may not be lying
upon each other
Oil scraper ring
Compression ring
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