20
Problem Possible Cause Solution
Head releases dump Loose trip block bolts Tighten trip block bolts. See Fig. 19.
valve prematurely
Links are above center Check that links are below center
line of clevis pins. Adjust links. See Fig. 20.
Worn catch at point Check the catch point for wear at the
bullet. Replace catch. See Fig. 21. See
Section 13.3 for catch replacement
procedure.
Trip line jams on
returning
Trip line doesn’t
return
12. GENERAL TROUBLE SHOOTING
Trip line sleeves are
fouling cast lugs on
head
Pull the trip line completely out. Check that
the swaged sleeves at the end of the trip
line are not fouling the cast guide lugs on
the head and cover. Round the end of the
swage sleeves with a file. See Fig. 22. If
necessary the lower set of cast lugs (closest
to the trip block) on the head act as a safety
keeper to prevent a trip line broken at the
top end from causing a tail rotor strike. The
swage blocks should not pass between
them.
Check for a broken spring in the reel. A
broken spring is indicated if the tension on
the reel doesn’t increase as the reel is
wound, or if the tension increases in jerks
or the spring seems to “slip” inside the reel.
See Section 13.2 for reel replacement
procedure.
Broken spring in reel
CHECK
FOR
LOOSE
TRIP
BLOCK
BOLTS
Fig 19
CHECK
LINKS ARE
BELOW
CENTER
LINE OF
CLEVIS PINS
CHECK
LINKS DO
NOT CATCH
HEAD OF
BOLT
Fig 20
CHECK
CATCH
FOR
WEAR
AT
POINT
Fig 21
CHECK
SWAGED
SLEEVE FOR
FOULING ON
CAST LUGS
Fig 22
To Next Page
Loading...
Need help?
General