Cleaning compound solvent is used to clean parts and is potentially dangerous to
personnel. Extinguish all smoking materials and do not allow sparks or open
flame near the work area. Use skin and eye protection and work in a well-
Clean inner support leg weldment (3) and upper support weldment (16) using general purpose detergent and
scrub brush. Use cleaning solvent, wire brush, and crocus cloth for degreasing and removal of corrosion.
Inspect inner support leg (3) for cracks, broken welds, warping, peeling of paint, and corrosion.
Inspect upper support weldment (16) for cracks, broken welds, or warping. Replace any defective parts.
Repair of rear support leg is limited to replacement of defective cover (6), latch (12), and lubrication fitting (13).
Additional repair, required only if actuating nut (18) is destroyed during disassembly, consists of restoration of
threaded top end of screw shaft (21) prior to installation of a new nut and socket head screw (17). To repair
screw shaft (21), proceed as follows:
a. Using a 1.0 - 14 UNF thread cutting die, restore threads damaged during removal of actuating nut. Clean off
metal particles with wire brush and wiping rag.
b. Install a new nut (18) on threaded end of screw shaft (21) and thread on nut until top of nut is flush with top of
shaft and setscrew slot in nut is alined with setscrew slot in shaft.
c. Using a 0.3215 - 18 thread cutting tap, restore threads in shaft slot which were damaged during removal of
nut (18) and setscrew. Remove nut and clean off metal particles with wire brush and wiping rag.
d. Proceed to step 1 of assembly.
Change 1 4-319