TM 5-4310-451-14 4-11. GENERAL PMCS PROCEDURES (Con’t). b. While performing PMCS, inspect the following components: (1) Bolts,  Nuts,  and  Screws.    Ensure  that  they  are  not  loose,  missing,  bent,  or  broken.    Tighten  any  that  are loose. (2) Welds.  Inspect for cracks where parts are welded together.  Report bad welds to your supervisor. (3) Electric  Wires  or  Connectors.    Inspect  for  corroded,  cracked  or  broken  insulation,  bare  wires,  and  loose, broken, or cracked connectors.  Make repairs or replace as required. (4) Hoses, Lines, and Fittings.  Inspect for wear, damage, and leaks.  Ensure that clamps and fittings are tight. If  a  leak  is  caused  by  a  loose  fitting  or  connector,  tighten  it.    If  a  component  is  broken  or  worn,  correct  problem  If authorized by the Maintenance Allocation Chart (MAC) (Appendix B).  If not authorized, report it to your supervisor. 4-12. SPECIFIC PMCS PROCEDURES. a. Unit PMCS is provided in Table 4-1.  Always perform PMCS in the order listed.  Once it becomes a habit, any   deficiency   can   be   spotted   in   a   minute.      If   any   deficiency   is   discovered   through   PMCS,   perform   appropriate troubleshooting task in Section IV of this chapter.  If any component or system is not serviceable, or if given service does not correct deficiency, notify your supervisor. b. Before  performing  preventive  maintenance,  read  all  the  checks  required  for  the  applicable  interval  and prepare tools needed to make all checks.  Have several clean rags (item 35, Appendix E) handy.  Perform ALL inspections at the applicable interval. c. The columns in Table 4-1 are defined as follows: (1) Item No.  Provides a logical sequence for PMCS to be performed and is used as a source of item numbers for the "TM ITEM NO" column on DA Form 2404 in recording PMCS results. (2) Interval.  Specifies Interval at which PMCS is to be performed. (3) Item to be inspected.  Lists system and common name of items that are to be inspected. (4) Procedures.  Tells you how to do required check or service. Table 4-1.  Unit Preventive Maintenance Checks and Services (PMCS). Q-QUARTERLY S-SEMIANNUAL A-ANNUAL H-HOURLY Item Interval Item to be No. Q S A H Inspected Procedure 1 • LEVERS, Inspect levers, linkage, and cables for missing parts, wear, LINKAGE, AND mounting, and ease of operation. CABLES 2 • FRAME AND Visually inspect frame and drawbar ring for broken welds, DRAWBAR RING cracks, or other obvious damage. 3 • WHEEL Check bearings for wear or damage.  Pack wheel bearings (see BEARINGS paragraphs 4-68 and 4-69). 4-4