B
.
Housing Sub-Assembly
(E309-0477) and related parts.
(1) Examine "stop" surfaces, the
mating surfaces to the handle
"stops". Reasons for damage
and possible malfunctions are
the same as outlined in section
A, part (1). Replace housing
if damaged or worn. Refer to
Fig. 5.
(2) Housing Hook should be re-
placed if the hook has been
sprung or bent by misuse. Refer
to disassembly instructions for
replacement procedure.
Excessive hook play in the
housing may be an indication
that the bearing seat in the
aluminum housing is worn, in
which case, replace the housing.
Refer to Fig. 6 for correct hook
adjustment.
(3) Shift key (P309-0043) should
be examined for breakage or
bending, particularly the cam-
ming surfaces. Fig. 7 and Fig.
8 show the correct position of
the shift key when the shift
key finger (19296) is in "up" or
"dn" position.
(4) Shaft (P309-0791). Factory re-
placement of this part is seldom
necessary on hoists returned for
repair. Replacement is general-
ly required because of extreme
mistreatment of the hoist:
Breakage of the ratchet teeth
caused by severe shock loading,
or repeated self-ratcheting; us-
ing the hoist as a maul; foreign
matter carried into the chain
pockets and wedging, causing
breakage of the chain pocket
sides. Fig. 9 & 10.
Damaged Housing
Adjust screw so that
spring does not bind
on unloader plate.
7
FIG. 7 Shift Key in "Up" Position
FIG. 8 Shift Key in "Down" Position
Hook Safety
Latch
New Housing
FIG. 5
FIG. 6 Safety Hook Housing
Insert groove
pin through
hole in hous-
ing.
Tighten nut to allow
minimum clearance
when safety latch is
pivoting back for disen-
gagement.
Check pin for wear
or bending
Slight marking caused
by contact with stop
bolt is normal. Replace
if damaged.
Battered
"Stop" Area
