TM 10-3930-664-10 Location Item Interval Item to Procedure Not Fully Mission No. Check/ Capable If: Service MAST ASSEMBLY 28 During Sideshift Chains With rated capacity load (4,000 Sideshift chains are not lbs/1800 Kg) on forks, check left properly adjusted. and right sideshift chains for proper adjustment. a. Sideshift forks to the left. Right sideshift chain should droop, but the upper portion of the chain should not touch the chain adjustment indicator.  If the upper portion of the chain touches the chain adjustment indicator, adjust the chains. Refer to paragraph 3-11. b. Sideshift forks to the right. Upper portion of left side chain should just touch the chain adjustment indicator.   If  the upper portion does not touch the chain adjustment indicator adjust the chains.  Refer to paragraph 3-11 . WARNING Before raising the rails, check to ensure that the inner rail will not come near overhead power lines or structures.  Striking power lines or structures could result in equipment damage or personnel injury. 29 During Mainlift Chains With forks centered, check the Mainlift chains are not mainlift chains for proper properly adjusted. adjustment. a. Raise forks to maximum lift height (120 in/305 cm). b. Observe movement of inner rail.  Both side of inner rail should reach full height at same time.  If top of inner rail tilts sideways, notify organizational maintenance 2-23