OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER

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the "Electrical" control position as determined
by the spring action of the valve, but
this additional movement is used to provide
lost motion, when the venting valve is operated
by the solenoids, during "Servo Electrical"·control.
(3) The next step in preliminary adjustments is
the adjusting of the connecting rods for
proper lengths to give the correct angular
position of the hoist and lower operating
lever at the A-end.
(d) To adjust the hoist control lever. -
(1) First disconnect the adjustable rods 274254-2
or 274251-2 (see 274251, installation and
assembly of the control linkage) .fr om the
A-end, and also the control rod 274330-3
that connects from lever 274253-1 to the
B-end.
(2) The control selector lever is to be placed
in the "Mechanical" position to allow the
la tch to register in the notch in the cam
on the main control shaft. The control pump
by-pass valve and servo valve centering lever
is to be placed in the "Manual" position to
correctly center the servo valve.
(3) The hoist and lower control lever, which is
mounted in the control compartment is to be
adjusted to its neutral position, when the
latch is in the notch of the latch cam.
(4) The adjustable universal link, which connects
the lever on the main control shaft to lever
274253-3 (see 274251), is to be correctly
adjusted for length. This link whenconnected
to lever 274253-3 must hold lever
274253-3, so that its center line makes a
90 0 angle (approx.) with the center line of
bracket 274252-1. This may be determined
by measuring the distance from' the center
line of the shaft 274253-2 to the lower side
of the gun girder cap; then adjust the universal
link, so that 'the center line of the
end of lever 274253-3 is the same distance
from the lower side of the gun girder cap.