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Mounting Instructions
Model 6730, 6735, 6738, 6741 Mechanical Combination Lock
THIS STEP APPLIES ONLY TO THE 6735, WHICH
IS EQUIPPED WITH AN ALUMINUM SPINDLE TUBE:
Insert the aluminum tube through
the spindle hole in the safe door,
and hold the lock against the safe
door's mounting plate. Mark the tube
7/64" out from the front surface of
the safe door. Remove the lock and
cut the tube at your mark. Make sure
the cut is straight and smooth, and
remove any sharp edges, burrs and
cutting debris.
1. Using your fingers, pull the lock bolt to the fully extended
position. It should project approximately 1/2" from the lock
case when fully extended.
2. Remove the two Phillips
head cover screws.
3. Remove the lock cover
and set it aside.
4. Remove the drive cam
and set it aside.
5. Align the spindle hole of the lock case with the spindle hole
of the safe door and securely fasten the lock to the safe's
mounting plate by installing a 1/4 x 20 machine screw at
each corner of the lock case.
6. Seat the Delrin bushing into the
back of the dial ring, and, using
two 8-32 machine screws, install
the dial ring to the front
of the safe door. Align the hole in
the center of the ring as closely as
possible with the spindle hole in
the door. NOTE: If the lock is equipped with a tube, the dial
ring bushing will seat over the end of the tube.
7. Insert the dial's spindle through the safe door and lock.
Thread the spindle into the drive cam until the lock dial is
snug in its ring and the drive cam is snug against the wheel
post of the lock. Mark the spot where the spindle first projects
through the drive cam.
© Copyright 2006, Sargent & Greenleaf, Inc.
8. Remove the spindle
from the lock, thread
the drive cam onto
the spindle until it
is between the dial
and your mark. Cut
the spindle at your
mark, then file the new spindle end until it is smooth and
flat. Remove the drive cam from the spindle to re-form any
threads, which may have been damaged in the cutting pro-
cess.
9. Insert the dial's spindle through the safe door and thread it
into the drive cam until snug. The end of the spindle should
now be nearly flush with the surface of the drive cam.
10. Back the cam off the spindle enough to align the slot
(spline keyway) in the spindle with the slot in the drive
cam, which corresponds to the
mounting position of the lock
(RH, LH, VU, VD). If less than
1/2 turn is required to align
the spline keyways, back the
cam off one extra revolution.
11. Insert a new, unused spline key
into the aligned spindle and drive
cam slots. The flag of the spline
key should extend over the body of
the drive cam and NOT cross the
end of the spindle. Using a small,
light hammer, tap the spline key
until the flag just touches the
surface of the drive cam. Make certain the spline key is a
tight friction fit, or the lock will not function properly.
12. Replace the lock's cover and fasten it securely with the
cover screws.
13. Refer to operating and changing instructions for the model
of lock you have installed.
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