Operating and Combinatiion Changing Instructions
Four Wheel Safe Locks
Models 6631, 6643, 6651, 6731 Group 2 and 2M
Copyright
©
2002, Sargent & Greenleaf, Inc.
Document 630-653.5
Revision 1.1 (7/7/03)
Sargent & Greenleaf, Inc.
PO Box 930, Nicholasville, Kentucky 40356 USA
Phone (859) 885-9411
Phone (800) 826-7652
FAX (859) 887-2057
FAX (800) 634-4843
Sargent & Greenleaf S.A.
9, chemin du Croset
1024 Ecublens, Switzerland
Phone 41-21-691-9583
FAX 41-21-691-5349
TORQUE ADJUSTMENT (not available on all models)
The torque adjustment feature allows the wheel pack tension
to be adjusted for optimum lock performance. To adjust
torque, remove the lock cover and insert a
3
⁄
32
“ hex wrench into
the adjusting gear (see illustration at left). Turn clockwise to
increase torque or counterclockwise to decrease torque. This
adjustment should only be performed by a skilled technician
using a specialized torque measuring tool. The wheel pack
torque should never be less than 12 inch-ounces, and S&G
recommends that it be set between 18 and 20 inch-ounces.
Torque Adjusting Gear
Changing Index
Opening Index
OPENING THE LOCK
The opening index is located at the top of the dial ring.
Dial numbers to this mark when you want to open the lock.
The changing index is located at approximately 11 o’clock
on the dial ring. Dial numbers to this mark when preparing
to insert the change key and when actually setting a new
combination.
This lock is a precision mechanism, so extreme care must
be used to align the combination numbers with the index.
Turn the dial smoothly and steadily. If, after turning
the correct number of revolutions, any number of the
combination is turned beyond the index when you meant to
stop on it, the entire series of combination numbers must
be re-dialed. Do not attempt to turn the dial back to regain proper alignment with a “missed” number.
Each time a selected number is aligned with the opening index, a revolution is counted.
TO UNLOCK ON A FACTORY SETTING OF 50
1. Starting anywhere, turn the dial left until 50 comes to the opening index the FIFTH time.
2. Turn the dial right until it comes to a positive stop indicating the bolt has retracted.
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