(1) Inspect toggle plate for wear and replace if
4-72. Toggle Plate
The toggle plate is the oscillating link between the bottom
(2) Inspect base toggle seat and pitman seat for
of the pitman and the base toggle seat. With the
cracks or wear and replace if necessary.
eccentric shaft, the toggle plate imparts a crushing and
(3) Coat toggle seats with grease before
downward motion to the pitman and movable jaw as the
shaft revolves. The toggle plate is also a safety device
and should break if uncrushable material enters the
(1) Slide toggle plate down conveyor belt.
(2) Fasten chain or cable to toggle plate and lift
into position in crusher.
(1) Attach a cable or chain through hole in center
or toggle plate and fasten other end to crusher frame.
Install toggle plate with word "TOP" in
Releasing of tension spring must be
(3) Guide rounded edge of toggle plate into
made before applying hydraulic
pitman toggle seat.
pressure to the pitman assembly to
(4) Release hydraulic mechanism slowly, until
prevent injury to personnel. Check
seat in pitman mates with lower rounded edge of toggle
pitman assembly with a block of
wood between base and pitman.
(5) Reassemble and tighten tension spring
(6) Disconnect ram from pitman and base and
The same hydraulic system used to adjust
crusher opening is used when removing
(7) Adjust crusher opening as outlined in
(3) Release tension on spring and remove rod
(4) Work pump handle until pitman is pushed
To eliminate clattering or pounding when
crusher is in operation tighten tension
forward to allow removal of toggle plate.
(5) Lower toggle plate to conveyor belt and pull
from under crusher.