36
79/RT/E7900/770/E-760/660 Series
PK3678_T 04-18
B.3 Install the Cylindrical Unit (con’t)
3. Insert the cylindrical unit from the outside of the door to-
ward the inside, so that it engages the latch as shown. This
operation is to be done at B.5 step 4.
(outside)
Cylindrical unit
Latch
B.4 Inside Trim Assembly for Cylindrical
The inside trim assembly for cylindrical includes parts as-
sembled at the factory to control the motion of the thumb-
turn, and an additional spring. The locking screw (V) is add-
ed for storeroom applications (no privacy)
Do the following BEFORE placing the inside trim assembly
on the door (page 37, step 5):
Install the additional tension spring (N) between the plate
(P) and the post (Q), on the side opposite the lever handle
spring installed in the last step.
N1
Q
P
Put the thumbturn in the vertical position so that the arrow
(A) on the disc points UP.
If installing as a Storeroom function lock, lift the plate (P)
until the hole in the plate is aligned with the hole in the disc
(D), and fasten the disc and the plate securely together with
the screw (V) and lock nut (W) provided. The screw head
MUST touch the surface of the disc for correct assembly.
V
W
D
A
P
B.5 Install Outside Housing and Trim Assembly for
Cylindrical
1. Insert the slotted end of the square spindle (G) into
the outside lever hub until it locks, at an angle of 45º.
(The spindle can be removed by pulling on it, if oriented
incorrectly.)
Square Spindle
Position
Correct Incorrect
2. Insert the thumbturn spindle (F) in the upper hub of the
outside housing. (It will clip in place.)
3. Assemble gasket onto the outside housing. Assemble
cylindrical plate assembly onto the outside housing.
4. Place the outside housing on the door so that spindle (F)
engages thumbturn hole and spindle(G) engage hub of
cylindrical unit. The cylindrical unit will engage the latch
as shown in step 2 of B.3 (page 35). For 660i/790/RT/79M
insert cables W1/W3/W5 when applicable in gasket &
cylindrical plate assembly and in hole (H1) on the door.
APPENDIX B Installing Cylindrical Models 2-3/8"
& 2-3/4" Backset