(c)
Check that rigging pin F-1 fits freely in flap control unit.
(d)
Check that tensions in WFFA and WFFB cables are within limits of that specified in temperature-tension chart in Fig. 501.
(e)
If conditions in steps (c) and (d) are not within limits: 1) Remove turnbuckle locking clips from WFFA and WFFB turnbuckles. 2) Adjust turnbuckles so that rigging pin F-1 fits freely. Adjust so that cable tension
is within limits of that specified in temperature-tension chart (Fig. 501). 3) Install turnbuckle locking clips.
(f)
At flap power unit check that WFFA cable has approximately 2-1/4 turns on cable drum, and that WFFB cable has approximately 1/3 turn on cable drum.
(g)
At flap control unit check that WFFA cable has approximately 1-1/2 turns on cable drum, and that WFFB cable has approximately 2-1/2 turns on cable drum.
(4) Adjust trailing edge flap control valve.
(a)
Ensure that flap control lever is in FLAP UP detent.
(b)
Install rigging pin F-1 in flap control unit (View 1, Fig. 503).
