
M3372.1412
Installation Instruction
Module 8788 50 mm backset, striking plate 2301
NOTE! Do not open the lock. Broken seal would invalidate the warranty of the product.
Maintenance secures the functionality. For detailed information look at www.assa.se
Mortice instruction
Scale 1:1. Do not copy! Size may change. ASSA will not be responsible for a copied installation instruction.
3 mm
50 mm
Ø 42 Ø 42
3 mm
50 mm
Mounting of cylinders
Placement of lock case in door blade
Non-rebated – Use flat strike plate Rebated door – Use an angled strike plat
Plug instruction:
Place the plugs on top of the screw holes according to the
picture. Turn the key to “half past twelve” and insert the plug
between the screws on the right side of the cylinder. Then
turn the key to “half past nine” and insert the plug on the left
side. Use the same procedure when removing the plugs
Hinges to the right
= Right handed
Hinges to the left
= Left handed
1 Mark centreline A (Forend) when you have decided the position of the lockcase.
2 Put template along edge C and place alongside the front edge on the door, mark the
position of cylinder hole B.
3 Mark hole for the forend where centerline A crosses template line F.
4 Use a ø 20 mm drill bit to get the correct depth for the lockcase. 78 mm for 50 mm
backset. If fitting an electromechanical lock or microswitched lock add 10 mm to the
dept. Do not use force to push the lockcase into the mortice.
5 Drill the ø 42 mm hole for cylinder hole B through the door.
6 Mortice the forend into the front of the door, this has a depth of 3 mm and
width 22 mm.
7 Put the template for the strike plate acc. drawing. Make sure measure S is 2-4 mm.
Make the mortise according to strike plate drawing beside, 26 mm depth. Use a chisel
to fit the strike plate into the mortise. Use a chisel to make the outer profile according
to drawing, 4 mm depth. Drill 4x ø 3 mm holes for the screws for striking plate 1489.
Recommended screw: 1489 4 x TFX 5,0 x 40 mm.
1. Cylinders on both sides are fastened from the inside with four supplied screws
N.B: The decorative cover for the outward facing cylinder should be attached
at this point.
2. Block the screws using the two supplied plugs. See plug instruction below.
3. Fit the decorative cover on the inward facing cylinder.
4. Attach the cylinder rings on both cylinders, position the screw hole towards the
bottom of the rings and fixate using the supplied screw.