Tripping Linkage; Lever Resting On Tripping Points; Adjusting The Tripping Linkage - Singer 270 Service Manual

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Fi g. 16. Adjusting the Tripping Linkage
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T RIPP ING L IHKAGE
CHEOC:
Tripping roc k shah support , Fig . 16,
should
be
posit ioned to ho ld rock shaft without bind ing .
SETTING:
Loosen set screw shown in Fig. 16 and posit ion
support as
re<J,~i r ed.
Tight en set screw a nd check for bind ing.
fig.
17. Le ver
resting on T ri ppi ng P o int
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CH ECIC:
Turn mach ine pu lle y over toward operator unti l
rock shaft lever rests on tripping point a s shown in
f ig. 17.
At this po sit ion, bell cr a nk p awl shou ld li ft o ut
of not ches in be ll crank for e nough for machine to
move in to " stop" when a ctuated by tripping point on
fee d com os shown in Fig. 17.
SETTING:
With rock shaft le ver rest ing on t ripp ing po int,
loosen rock sh aft pinch screw with soc ket wrenc h a s
shown in F ig. 16 .
Using socket wrench as o lever, in pinch screw,
swing wre n ch forwa rd {toward face plate) to remove
ploy in connec t ing rod and ALSO to rai se point of
be ll crank pa wl appro· x imote ly .020 inch a bove top of
'"coost" notch in bel l c ra nk a s shown in F ig. 16 .
Secure ly t ighten pinc h screw a nd check a dju stment.