TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 69 of 1275
TM 9-2350-311-20-1 2-14.4.3 Special lubrication — Special lubrication applies either to lubrication operations that do not appear in TM 9- 2350-311-10, TM 9-2350-311-20-2, or paragraph 2-15 or to items that do appear, but that should be done with the annual services. 2-14.4.4 Service — Servicing covers operations such as adding battery water, draining and refilling units with oil, and changing or cleaning the oil filters, fuel filters, and air cleaners. 2-14.4.5 Tightening — All tightening operations should be done according to specified torque readings where noted in this manual. When torque isn’t specified, care should be taken not to strip or distort threads by overtightening. Use a torque wrench where specified. Tightening includes the correct installing of Iockwasher, nut, lockwire, or cotter pin needed to secure the tightened nut or bolt in place. See Appendix F for torque requirements. 2-14.4.6 Repair — Restore an item to a serviceable condition. This includes, but is not limited to, inspection, cleaning, preserving, adjusting, replacing, welding, riveting, and strengthening. 2-15 PROCEDURES FOR SEMIANNUAL/ANNUAL SERVICES DA Form 2404, Equipment Inspection and Maintenance Worksheet, is used by the mechanic to record periodic maintenance services performed and faults corrected. The item number on the DA Form 2404 must correspond to the item number of the preventive maintenance check. Specified items to be checked semiannually and annually are found in Table 2-1. Before you begin to check specific items, remember to check things common in all areas as shown in the following illustrations. Perform unit maintenance level repair or replacement as authorized. Report faulty equipment which is beyond unit maintenance level as prescribed in DA PAM 738-750. 2-15.1 Electrical Wires and Connectors Electrical wiring should be checked for cracks due to aging and for exposed wires that cause electrical shorts. Repair with electrical tape or replace. Check connectors and tighten if loose (complete hull wiring diagram, wiring harness schematics, and details are in Chapter 8 and the foldout pages of this manual). If connector pins are corroded, spray pins with cleaning lubricant (item 13, Appx D). 2-21 NOTE