TM 5-4310-393-14 1. Intercooler, 2nd stage. 2. Inter-filter, 2nd stage 3. Oil pressure regulator. 4. Cylinder, 3rd stage. 5. Oil filer cap/dipstick. 6. Safety relief valve, 2nd stage. 7. Air intake filter. 8 Cylinder, 1st stage. 9. Safety relief valve, 1st stage. 10. Cylinder, 2nd stage 11. Intercooler, 1st stage. 12. Oil drain plug. 13. Manual condensate drain valve. 14 Filter Mount Figure 3-7.  Reciprocating Compressor Components Table 3-3 Compressor Repair Data Stage Item Max. min in mm in mm Discharge valve spring length. 0.945 24 0 827 21 First Discharge valve stroke 0 049 1 25 0.039 1 Valve seat bore diameter 0.049 1.25 Discharge valve spring length 0.945 24 0.827 21 Discharge valve stroke 0.041 1.05 0.031 0 8 Second Discharge valve seat bore 0.315 8 Inlet valve spring length 0.413 10 5 0 354 9 Inlet valve stroke 0.049 1.25 0.039 1 Inlet valve seat bore 0 492 12.5 Discharge valve seat bore. 0 157 4 Third Inlet valve stroke. 0 047 1 2 0.031 0.8 Discharge valve stroke 0 047 1.2 0.035 0 9 3-15