Keystone E31250 Operating Manual page 8

4.0 Repair & Critical Areas
Disassembly Procedure
• Remove the latch assembly and latch spring by
driving or pressing out the roll pin and driving out the
latch pin from the bottom of the elevator.
• Remove the latch lock from the door by driving out
the roll pin.
• Remove the hinge pin by driving it out from the
bottom of the elevator, shearing the roll pin in the
process. The roll pin must be discarded after removal.
• If either link block is to be replaced, remove the link
block bolt and cotter pins.
• Reassemble by reversing the above steps.
• Install new roll pins on hinge and latch pins.
• After assembly, ensure that full spring tension is
available to close the latch & lock. The latch spring
should contact the spring stop bar, which in turn
transmits the spring force to the latch.
OP-09 REV.08 07/19/2022
• Check the latch lock for proper engagement with
• Check link block bolts, nuts, and cotter pins.
We have identified those areas considered critical to
tool performance and functionality. These should be
examined for repair or replacement.(See Figure 8)
Bodies, doors and latches are specifically matched
by trained Keystone Energy Tools professionals. For
this reason, a body, door or latch from one elevator
should never be exchanged with a body, door, or
latch from another elevator.
Illustrated below, are the critical and non-critical
areas associated with the subject tool. Critical areas
are identified by the shaded areas. All non-shaded
areas are considered non-critical.
Figure 4
Keystone
ENERGY TOOLS
the latch by holding the body and door apart
(such that the latch contacts the lug on the door)
and attempt to pry the latch open. After minimal
movement of the latch, the hook on the latch
should engage with the latch, stopping the travel
of the latch.
8