79/RT/E7900/770/E-760/660 Series
PK3678_T 04-18 23
9 Installation of Mechanical Override Models
9 Installation of Mechanical Override Models
5. Attaching the Lever Handle to the Lock (with the key
as shown in Fig. 6 & Fig. 7)
7. Fit the lever handle (H) onto the drive tube (E) see page
18. It should rest approximately 1/16" from the body of the
housing. If not, wiggle and jiggle key (N) to align cylinder
(J) with override shaft (L)(See Fig. 8)
If it can’t be pushed that close to the housing, the lever catch
(F) is probably not pushed in. Push it in. (see fig 2 page 19)
If the lever catch (F) is stuck, the override shaft (L) is in the
wrong position. (see fig 2 page 19) The two small indents
(M) on the cross of the override shaft (L) must be vertically
aligned as in fig 2 page 19
Right-handed
lock
Recess entry for key in TOP
Position
Recess entry for key in BOTTOM Position
left-handed
lock
Fig. 8
(H)
(N)
(H)
8. Press the lever (H) firly against the housing while turning
the key (N) counterclockwise (this applies to both right-
handed and left-handed locks) until it is in the horizontal
position. (Fig. 9)
Fig. 9
right-handed
lock
left-handed
lock
(Housing)
(N)
(H)
CAUTION
WARNING
IMPORTANT
If it is not possible to turn the key (N) counter-clockwise to
complete this step, the spring washer (D, see page 18) may
be too tense: (Not for lever feel)
Hit the lever carefully with a rubber mallet to loosen the
spring washer (D). (you may want to cover the lever handle
(H) with a cloth or other material to protect the finish of
the metal)
9. Remove the key (N). The lock will look as shown in Fig.10.
right-handed lock
left-handed lock
Fig. 10
Gently check the rotation of the lever handle (H). It should
easily rotate approximately 45º.
Troubleshooting:
Right-handed Lock: Turn the lever handle (H) clockwise
without forcing it. If it stops at approximately 15º,
it was not assembled correctly as shown in step 4
(Fig. 6 & 7). Do not try to force it to turn. Release the
lever handle (H). Insert the small screwdriver (T, page
16) into the small hole on the underside of the lever
handle (H) and push in the lever catch (F) see page 19.
Re-do steps 2, 3, 4 & 5.
Left-handed Lock: Turn the lever handle (H) counter-clockwise
without forcing. The drive hub (B) (Fig.12 page22) should not
rotate when the lever handle (H) is turned. If it does, it was not
assembled correctly as shown in step 4 (Fig. 6 & 7). Release
the lever handle (H). Insert the small screwdriver (T, page
18) into the small hole on the underside of the lever handle
(H) and push in the lever catch (F). Re-do steps 2, 3, 4 & 5.
