TM 9-4310-397-14 Table 4-1.  Preventive Maintenance checks and Services for 16MS125 - Continued Location Item No. Interval Procedure Not Fully Mission Capable If: Item to Check/Service 22 - g.  Connect any loose hoses per tags. Cont Remove tags. h.  Check compressor oil level. i.  Close access doors (107). SECTION IV MANDATORY REPLACEMENT PARTS The following table includes all items that must be replaced during PMCS whether they have failed or not.  The table reflects the interval at which these items must be replaced whether hardtime maintenance or on condition maintenance. ITEM PART NO. NUMBER NSN NOMENCLATURE QTY 1 MS35338-48 5310-00-584-5272 Lock Washer 8 2 R17, 86810, 51459, PF-881, 2940-01-080-3861 Compressor Oil Filter 1 PH-977A 3 T20215 5330-00-340-5374 Gasket 1 4 MS35338-44 5310-00-582-5965 Lock Washer 4 5 DD14941 6685-01-378-3468 Thermostat 1 6 R106796 5330-01-388-8523 O-Ring (Gasket) 1 7 AR50041 2910-00-100-3354 Fuel Filter 1 8 T19044 2940-00-007-4791 Engine Oil Filter 1 9 DVC-0168-3, 48772 4310-00-883-0512 Separator Element 1 4-40