TM 10-3930-669-20 14-4.  SIDE SHIFT CHAIN ADJUSTMENT. This task covers: a.  Chain Tension Adjustment b.  Side Shift Adjustment INITIAL SETUP Tools and Special Tools Equipment Condition Tool Kit, General Mechanic's: Automotive Engine OFF (TM 10-3930-669-10) (Item 1, Appendix B) Parked on level surface (TM 10-3930-669-10) Parking brake applied (TM 10-3930-669-10) Materials /Parts Wheels chocked (TM 10-3930-669-10) Rags, Wiping (Item 19, Appendix C) Mast pivoted 90 degrees (TM 10-3930-669-10) Mast side shifted (TM 10-3930-669-10) Carriage raised 3 in.  (76.2 mm) (TM 10-3930-669-10) a.  Chain Tension Adjustment WARNING All personnel must stand clear during lifting operations.  A swinging or shifting load may cause injury or death to personnel. (1) Remove two screws (1), washers (2), and locking plates (3) from support (4). (2) Start engine (TM 10-3930-669-10). (3) Shift carriage to right side (TM 10-3930-669-10). (4) Stop engine (TM 10-3930-669-10). (5) Tighten or loosen two screws (5), as required, until two chains (6) are tight. 14-7