Allegion ND Service Manual

ND-Series

Service manual

Contents

5 Introduction

5 Lock assembly drawing index 5 Lock conversion 5 Changes and additions

6 Lock assembly drawing index

11 Chassis

12 Passage latch 13 Passage latch with request-to-exit 14 Exit lock 15 Exit lock with request-to-exit 16 Exit lock— electrically locked (fail safe) or electrically

unlocked (fail secure)

17 Exit lock— electrically locked (fail safe) or electrically

unlocked (fail secure) with request-to-exit 18 Exit lock with blank plate 19 Special— classroom exit lock 20 Special— storeroom exit lock 21 Patio, bath/bedroom privacy and hospital privacy lock 22 Time out lock with Vandlgard 23 Entrance/oce and entrance lock 24 Vestibule lock 25 Store lock 26 Classroom lock 27 Special— classroom by storeroom lock 28 Special— communicating lock 29 Special— communicating lock with Vandlgard 30 Corridor lock 31 Classroom security lock 32 Storeroom lock 33 Storeroom lock with request-to-exit 34 Storeroom lock— electrically locked (fail safe) or

electrically locked (fail safe) 35 Storeroom lock— electrically locked (fail safe) or

electrically unlocked (fail secure) with request-to-exit 36 Institution lock 37 Faculty restroom lock 38 Entrance/oce and entrance lock with Vandlgard 39 Vestibule lock with Vandlgard 40 Classroom lock with Vandlgard 41 Classroom security lock with Vandlgard 42 Storeroom lock with Vandlgard 43 Storeroom lock with Vandlgard 44 Storeroom lock with Vandlgard®— electrically locked

(fail safe) or electrically unlocked (fail secure) 45 Storeroom lock with Vandlgard®— electrically locked

(fail safe) or electrically unlocked (fail secure) with

request-to-exit 46 Corridor lock with Vandlgard

with request-to-exit

47 Trim assemblies

48 Passage latch 49 Passage latch with request-to-exit 50 Exit lock 51 Exit lock with request-to-exit 52 Exit lock— electrically locked (fail safe) or electrically

unlocked (fail secure)

53 Exit lock— electrically locked (fail safe) or electrically

unlocked (fail secure) with request-to-exit 54 Single dummy trim 55 Double dummy trim 56 Exit lock with blank plate 57 Special— classroom exit lock 58 Special— storeroom exit lock 59 Special— patio lock 60 Bath/bedroom privacy lock 61 Hospital privacy lock 62 Time out lock with Vandlgard

63 Entrance/oce lock 64 Entrance/oce lock 65 Vestibule lock 66 Special— ND60 with closed outside lever 67 Store lock 68 Classroom lock 69 Special— classroom by storeroom lock 70 Special— communicating lock 71 Special— communicating lock with Vandlgard

72 Corridor lock 73 Classroom security lock 74 Storeroom lock 75 Storeroom lock with request-to-exit 76 Storeroom lock— electrically locked (fail safe) or

electrically unlocked (fail secure) 77 Storeroom lock— electrically locked (fail safe) or

electrically unlocked (fail secure) with request-to-exit 78 Institution lock 79 Faculty restroom lock 80 Entrance/oce lock with Vandlgard 81 Entrance lock with Vandlgard 82 Vestibule with Vandlgard

83 Classroom lock with Vandlgard 84 Classroom security lock with Vandlgard 85 Storeroom lock with Vandlgard

86 Storeroom lock with Vandlgard® with request-to-exit 87 Storeroom lock with Vandlgard®— electrically locked

(fail safe) or electrically unlocked (fail secure) 88 Storeroom lock with Vandlgard®— electrically locked

(fail safe) or electrically unlocked (fail secure) with

request-to-exit 89 Corridor lock with Vandlgard

90 Conversion

90 Spring cage conversion 91 Lever conversion 91 Button and plunger assembly conversion 92 Lever conversion kits

93 Levers

93 Tactile warning levers

95 Roses

96 IC cylinder conﬁgurations

97 Cylinders

98 Competitor cylinder options

99 Latches

99 Strikes

100 Parts

100 Screws, screw packs, and special parts

102 Installation tools and kits

104 Electriﬁed locks

104 Allegion Connect

105 Request-to-exit feature

106 High security ligature resistant

(HSLR) trim

107 Finishes

108 Ordering procedures

109 Limited warranty

iv • Schlage • ND-Series service manual

Introduction

Turn/push button

This manual contains a complete listing of ND-Series (Grade 1) cylindrical lock parts and assemblies manufactured by the Schlage Lock Company. This edition lists components of ND-Series locks manufactured aer February, 2017.

This manual provides exploded views of each lock chassis and trim assembly with an accompanying chart to identify parts for replacement purposes, along with lock trim ordering procedures, general cylinder information, and all auxiliary components of the ND-Series cylindrical locks.

Standard Features*

Exceeds BHMA A156.2 requirements for Grade 1 cylindrical locks.

Certiﬁcations

Latch

Strike

Backset

Cylinder 6-Pin solid brass, keyed 6-pin, S123 keyway, keyed different (KD)**

Door Range

Keys Two nickel silver cut keys per lock, 6-pin, S123 section**

* Locks are furnished with standard features unless otherwise speciﬁed.

** Items speciﬁed in C keyway will be furnished with cylinder keyed 5-pin and with 5-pin keys unless otherwise speciﬁed.

Exceeds BHMA A156.25 requirements for indoor electriﬁed locks.

UL10C listed for 3-hour ﬁre doors up to 4'0" x 10'0"

Meets Florida Building Code (ASTM E330, E1886, E1996) and Miami-Dade (TAS 201, 202, 203) requirements for hurricanes.

1Z\,” x 2Z\v”, Square corner faceplate, 1” housing diameter, Z\x” throw

1Z\v” x 4M\,”, ANSI, Square corner, no box

2C\v”

Standard Lock Functions: 1B\,” – 2Z\,”; Vandlgard® Lock Functions: 1B\ ,” – 2Z\,”; ND85 Function: 1C\v” – 2”

Lock assembly drawing index

The lock assembly drawing index provides illustrations and textual descriptions of available functions.

Page numbers for full trim and chassis drawings are referenced.

Outside Inside

Vandlgard Lever

Deadlatch

Key Push button

Springlatch

Blank Plate

Active Lever

Fixed Lever

Lock conversion

Locks manufactured before February 2017 may be converted from original to new (post-February 2017) components and assemblies.

For detailed lists of original and new parts and assemblies, and kits for lock conversion, refer to Conversion on page 90,

Lever conversion on page 91, and Parts on page 100.

Changes and additions

ND170 single dummy function lock is updated with redesigned spring cage (see page 54).

ND172 double dummy is added (see page 55).

HSLR (high security ligature-resistant) trim is added (see page 106).

Schlage • ND-Series service manual • 5

Lock assembly drawing index

Function ANSI/BHMA A156.2, 2011, Series 4000, Grade 1 Trim Chassis

Schlage ANSI Description Outside function Inside function Page Page

ND10 F75 Passage latch Lever is always unlocked. Lever is always unlocked

ND12 F89 Exit lock Lever is always ﬁxed. Lever is always unlocked

ND12EL Exit lock —

electrically locked (fail safe)

ND12EU Exit lock—

electrically unlocked (fail secure)

ND170 Single dummy trim Inactive trim for one side

Lever is continuously locked electrically until unlocked by switch or power failure.

Auxiliary latch deadlocks latch bolt when door is closed.

Lever is continuously locked mechanically until unlocked by electric current.

Auxiliary latch deadlocks latch bolt when door is closed.

of door.

For use as door pull or matching inactive trim.

and is always free for immediate egress.

With available request-to-exit (RX) feature.

and is always free for immediate egress.

With available request-to-exit (RX) feature.

Lever is always unlocked and is always free for immediate egress.

With available request-to-exit (RX) feature.

Lever is always unlocked and is always free for immediate egress.

With available request-to-exit (RX) feature.

54 –

ND172 Double dummy

trim

ND25 F89 Exit lock with blank

plate

ND25 x 70 Classroom exit

lock 

Specify per XN12-004

Note: Any function with a dead latch locks the latch bolt when door is closed. See page 5 for identiﬁcation.

 Caution: Double cylinder locks on residences and any door in any structure which is used for egress are a life safety hazard in times of emergency and

their use is not recommended. Installation should be in accordance with existing codes only.

Inactive trim for both sides of door.

No latch. (Blank latch cover available.)

No cylinder.

For use as door pull or matching inactive trim.

Blank plate. Inside lever is always

Blank plate. Key locks or unlocks lever. 57 19

Inactive trim for both sides of door.

For use as door pull or matching inactive trim.

unlocked and is always free for immediate egress.

55 –

56 18

6 • Schlage • ND-Series service manual

Lock assembly drawing index

Function ANSI/BHMA A156.2, 2011, Series 4000, Grade 1 Trim Chassis

Schlage ANSI Description Outside function Inside function Page Page

ND25 x 80 Storeroom exit

lock 

Specify per XN12-005

Blank plate. Key in ﬁxed inside lever

retracts latch.

58 20

ND30 F77 Patio lock

Specify per XN12-007

ND40 F76 Bath/bedroom

privacy lock

ND44 Hospital privacy

lock

ND45 Time out lock Caretaker side: Inside lever

ND50 F82 Entrance/oce

lock

ND53 F109 Entrance lock Push/turn button: Key

ND60 F88 Vestibule lock Latch retracted by key

Note: Any function with a dead latch locks the latch bolt when door is closed. See page 5 for identiﬁcation.

 Caution: Double cylinder locks on residences and any door in any structure which is used for egress are a life safety hazard in times of emergency and

their use is not recommended. Installation should be in accordance with existing codes only.

May be opened from outside with small screwdriver or emergency release tool.

Unlocked from outside by turning emergency turn-button.

(detention side) is locked by pushing and holding button. Inside lever is locked until button is released. Lever always retracts latch.

Lever is unlocked with key or by turning inside lever, when push-button is pushed and locked on inside.

retracts latch when button is pushed and turned until button is manually unlocked. Push-button: Lever is unlocked with key when push-button is pushed.

when locked by key in inside lever.

Push-button locks outside lever. Turning inside lever or closing door releases push-button preventing lock-out.

Lever is always unlocked and is always free for immediate egress.

Push-button locks outside lever. Turning inside lever or closing door releases push-button.

Inside lever is always free for immediate egress.

Push-button locks outside lever. Turning inside lever or closing door releases push-button.

Inside lever is always free for immediate egress.

Detention side: Lever retracts latch unless outside (caretaker side) button is depressed.

Vandlgard allows inside spindle to disengage from latch when locked.

Push-button locks outside lever. Turning inside lever releases push-button.

Inside lever is always free for immediate egress.

Push/turn-button: Pushing and turning button locks outside lever until manually unlocked. Push-button: Pushing button locks outside lever until unlocked by key outside or by turning inside lever.

Inside always free for immediate egress.

Inside key locks and unlocks outside lever.

Inside lever is always unlocked and is always free for immediate egress.

59 21

60 21

61 21

62 22

63 23

64 23

65 24

Schlage • ND-Series service manual • 7

Lock assembly drawing index

Function ANSI/BHMA A156.2, 2011, Series 4000, Grade 1 Trim Chassis

Schlage ANSI Description Outside function Inside function Page Page

ND60 Vestibule lock with

closed outside lever

Specify per XN12-001

ND66 F91 Store lock  Key locks or unlocks both

Same as ND60 except outside lever is closed.

levers simultaneously.

Same as ND60.

Inside lever is always fee for immediate egress.

Key locks or unlocks both levers simultaneously.

66 24

67 25

ND70 F84 Classroom lock Outside lever locked or

unlocked by key.

Inside lever is always unlocked and always free

68 26

for immediate egress.

ND70 x 80 Classroom by

Storeroom lock 

Outside lever locked or unlocked by key.

Key in ﬁxed inside lever retracts latch.

69 27

Specify per XN12-006

ND72 Communicating



lock

Outside lever only locked or unlocked by outside key.

Inside lever only locked or unlocked by inside key.

70 28

Specify per XN12-002

ND72 Vandlgard

ND73 F90 Corridor lock Locked or unlocked by

Communicating lock with Vandlgard



Specify per XN12-003

Same as ND72.

Vandlgard allows outside spindle to disengage from latch when locked. Both levers are clutching.

outside key. When locked by key it can only be unlocked by key. Pushbutton locks from inside.

Same as ND72.

Vandlgard allows inside spindle to disengage from latch when locked. Both levers are clutching.

Push-button locks outside lever. Turning lever or closing door releases button. Inside lever is always unlocked and is

71 29

72 30

always free for immediate egress.

ND75 F110 Classroom security

lock

Outside lever locked or unlocked by key in either lever.

Key locks or unlocks outside lever.

Inside lever is always

73 31

unlocked and is always free for immediate egress.

ND80 F86 Storeroom lock Lever is ﬁxed. Entrance by

key only.

Inside lever is always unlocked and is always free

for immediate egress.

With available

request-to-exit (RX) feature.

Note: Any function with a dead latch locks the latch bolt when door is closed. See page 5 for identiﬁcation.

 Caution: Double cylinder locks on residences and any door in any structure which is used for egress are a life safety hazard in times of emergency and

their use is not recommended. Installation should be in accordance with existing codes only.

8 • Schlage • ND-Series service manual

Lock assembly drawing index

Function ANSI/BHMA A156.2, 2011, Series 4000, Grade 1 Trim Chassis

Schlage ANSI Description Outside function Inside function Page Page

ND80EL Storeroom

lock—electrically locked (fail safe)

ND80EU Storeroom

lock—electrically unlocked (Fail secure)

ND82 F87 Institution lock

Lever is continuously locked electrically.

Unlocked by key outside or by switch or power failure. When locked, key retracts latch.

Auxiliary latch deadlocks latch bolt when door is closed.

Lever is continuously locked until unlocked by key outside or by electric current. When locked, key retracts latch.

Auxiliary latch deadlocks latch bolt when door is closed.



Lever is ﬁxed. Entrance by key only.

Inside lever is always unlocked and is always free for immediate egress.

With available request-to-exit (RX) feature.

Inside lever is always unlocked and is always free for immediate egress.

With available request-toexit (RX) feature.

Lever is ﬁxed. Exit by key only.

78 36

ND85 Faculty restroom

lock

ND91 F82 Entrance/oce

lock with Vandlgard

ND92 F109 Entrance lock with

Vandlgard

Note: Any function with a dead latch locks the latch bolt when door is closed. See page 5 for identiﬁcation.

 Caution: Double cylinder locks on residences and any door in any structure which is used for egress are a life safety hazard in times of emergency and

their use is not recommended. Installation should be in accordance with existing codes only.

Lever is ﬁxed. Entrance by key only.

Lever is unlocked with key when push-button is pushed.

Vandlgard allows outside spindle to disengage from latch when locked.

When turn/push-button is pushed and turned, key retracts latch. When push-button is pushed, lever is unlocked with key.

Vandlgard allows outside spindle to disengage from latch when locked.

Push-button activates occupancy indicator, allowing only emergency master key to operate. Turning lever or closing door releases occupancy indicator. Rotation of button by spanner key provides lock-out feature by keeping indicator thrown.

Inside lever is always free for immediate egress.

Push-button disengages outside lever. Turning inside lever or outside key releases push-button.

Inside lever is always free for immediate egress.

Turn/push-button: Pushing and turning button disengages outside lever until manually unlocked. Push-button: Pushing button disengages outside lever until unlocked by turning inside lever or by key outside.

Inside always free for immediate egress.

79 37

80 38

81 38

Schlage • ND-Series service manual • 9

Lock assembly drawing index

Function ANSI/BHMA A156.2, 2011, Series 4000, Grade 1 Trim Chassis

Schlage ANSI Description Outside function Inside function Page Page

ND93 F88 Vestibule lock with

Vandlgard

ND94 F84 Classroom lock

with Vandlgard

ND95 Classroom security

lock with Vandlgard

ND96 F86 Storeroom lock

with Vandlgard

ND96EL Storeroom lock

with Vandlgard — electrically locked (Fail safe)

ND96EU Storeroom lock

with Vandlgard — electrically unlocked (Fail secure)

ND97 Corridor lock with

Vandlgard

Note: Any function with a dead latch locks the latch bolt when door is closed. See page 5 for identiﬁcation.

 Caution: Double cylinder locks on residences and any door in any structure which is used for egress are a life safety hazard in times of emergency and

their use is not recommended. Installation should be in accordance with existing codes only.

Latch retracted by key when locked by inside key. Key locks and unlocks lever.

Vandlgard allows outside spindle to disengage from latch when locked.

Outside lever disengaged or unlocked by key.

Vandlgard allows outside spindle to disengage from latch when locked.

Outside lever locked or unlocked by key in either lever.

Vandlgard allows outside spindle to disengage from latch when locked.

Lever always disengaged. Entrance by key only.

Vandlgard allows outside spindle to disengage from latch when locked.

Lever is continuously disengaged electrically. Unlocked by key or by power failure or switch. Auxiliary latch deadlocks latch bolt when door is closed.

Vandlgard allows outside spindle to disengage from latch when locked.

Lever is continuously disengaged until unlocked by key or electric current. Auxiliary latch deadlocks latch bolt when door is closed.

Vandlgard allows outside spindle to disengage from latch when locked.

Locked or unlocked by key. When locked by key, outside lever can only be unlocked by key.

Vandlgard allows outside spindle to disengage from latch when locked.

Outside lever is disengaged by key inside.

Inside lever is always unlocked and is always free for immediate egress.

Outside lever locked or unlocked by key in either lever.

Inside lever is always unlocked and is always free for immediate egress.

With available request-toexit (RX) feature.

Inside is always free for immediate egress.

With available request-toexit (RX) feature.

Inside is always free for immediate egress.

With available request-toexit (RX) feature.

Push-button locking. Turning inside lever or closing door releases button.

Inside is always unlocked and free for immediate egress.

82 39

83 40

84 41

89 46

10 • Schlage • ND-Series service manual

Chassis

12 Passage latch 13 Passage latch with request-to-exit 14 Exit lock 15 Exit lock with request-to-exit 16 Exit lock— electrically locked (fail safe) or electrically unlocked (fail secure) 17 Exit lock— electrically locked (fail safe) or electrically unlocked (fail secure) with request-to-exit 18 Exit lock with blank plate 19 Special— classroom exit lock 20 Special— storeroom exit lock 21 Patio, bath/bedroom privacy and hospital privacy lock 22 Time out lock with Vandlgard 23 Entrance/oce and entrance lock 24 Vestibule lock 25 Store lock 26 Classroom lock 27 Special— classroom by storeroom lock 28 Special— communicating lock 29 Special— communicating lock with Vandlgard 30 Corridor lock 31 Classroom security lock 32 Storeroom lock 33 Storeroom lock with request-to-exit 34 Storeroom lock— electrically locked (fail safe) or electrically locked (fail safe) 35 Storeroom lock— electrically locked (fail safe) or electrically unlocked (fail secure) with request-to-exit 36 Institution lock 37 Faculty restroom lock 38 Entrance/oce and entrance lock with Vandlgard 39 Vestibule lock with Vandlgard 40 Classroom lock with Vandlgard 41 Classroom security lock with Vandlgard 42 Storeroom lock with Vandlgard 43 Storeroom lock with Vandlgard 44 Storeroom lock with Vandlgard®— electrically locked (fail safe) or electrically unlocked (fail secure) 45 Storeroom lock with Vandlgard®— electrically locked (fail safe) or electrically unlocked (fail secure) with request-to-exit 46 Corridor lock with Vandlgard

with request-to-exit

Chassis

Passage latch

ND10

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

23 Outside housing 24088544

24 Inside hub 24085037

29 Slide N523-149

No. Description Part number

30 Slide clip N523-025

37 Adjustment plate N523-054

38 Spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

* Not sold separately as a part.

12 • Schlage • ND-Series service manual

Chassis

Passage latch with request-to-exit

ND10 RX

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

23 Outside housing 24088544

27 Inside hub, electriﬁed and RX 24085078

29 Slide N523-149

30 Slide clip N523-025

No. Description Part number

37 Adjustment plate N523-054

38 Spindle N523-177

48 RX harness N523-194**

49 RX harness screw N523-135

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

* Not sold separately as a part.

** For RX details, see Request-to-exit feature on page 105.

Schlage • ND-Series service manual • 13

Chassis

Exit lock

ND12

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

8 Keycam assembly N123-008

22 Spindle N523-013

23 Outside housing 24088544

24 Inside hub 24085037

No. Description Part number

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

38 Spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

* Not sold separately as a part.

14 • Schlage • ND-Series service manual

Chassis

Exit lock with request-to-exit

ND12 RX

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

8 Keycam assembly N123-008

22 Spindle N523-013

23 Outside housing 24088544

27 Inside hub, electriﬁed and RX 24085078

29 Slide N523-149

No. Description Part number

30 Slide clip N523-025

37 Adjustment plate N523-054

48 RX harness N523-194**

49 RX harness screw N523-135

51 RX inside spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

* Not sold separately as a part.

** For RX details, see Request-to-exit feature on page 105.

Schlage • ND-Series service manual • 15

Chassis

Exit lock— electrically locked (fail safe) or electrically unlocked (fail secure)

ND12EL or ND12EU

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

15 Electriﬁed keycam assembly N223-066

26 Outside electriﬁed housing 24088551

27 Inside hub, electriﬁed and RX 24085078

28 Outside electriﬁed spindle N523-019

29 Slide N523-149

* Not sold separately as a part.

** For electriﬁed lock details, see Electriﬁed locks on page 104.

16 • Schlage • ND-Series service manual

No. Description Part number

30 Slide clip N523-025

37 Adjustment plate N523-054

39 Inside spindle electriﬁed N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

54 Electriﬁed motor assembly N223-062**

Chassis

Exit lock— electrically locked (fail safe) or electrically unlocked (fail secure) with request-to-exit

ND12EL RX or ND12EU RX

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

15 Electriﬁed keycam assembly N223-066

26 Outside electriﬁed housing 24088551

27 Inside hub, electriﬁed and RX 24085078

28 Outside electrifed spindle N523-019

29 Slide N523-149

30 Slide clip N523-025

* Not sold separately as a part.

** For RX details, see Request-to-exit feature on page 105. For electriﬁed lock details, see Electriﬁed locks on page 104.

No. Description Part number

37 Adjustment plate N523-054

39 Inside spindle electriﬁed N523-177

48 RX harness N523-194**

49 RX harness screw N523-135

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

54 Electriﬁed motor assembly N223-062**

Schlage • ND-Series service manual • 17

Chassis

Exit lock with blank plate

ND25

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

23 Outside housing 24088544

24 Inside hub 24085037

29 Slide N523-149

* Not sold separately as a part.

No. Description Part number

30 Slide clip N523-025

37 Adjustment plate N523-054

38 Spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

18 • Schlage • ND-Series service manual

Chassis

Special— classroom exit lock

ND25X70

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

10 Keycam assembly N123-010

22 Spindle N523-013

23 Outside housing 24088544

25 Inside hub 24085060

* Not sold separately as a part.

No. Description Part number

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

Schlage • ND-Series service manual • 19

Chassis

Special— storeroom exit lock

ND25X80

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

8 Keycam assembly N123-008

22 Spindle N523-013

23 Outside housing 24088544

25 Inside hub 24085060

* Not sold separately as a part.

No. Description Part number

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

20 • Schlage • ND-Series service manual

Chassis

Patio, bath/bedroom privacy and hospital privacy lock

ND30, ND40, and ND44

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

2 Restoring slide catch C604-187

4 Slide catch spring C604-191

6 Chassis screw L583-454

17 Keycam assembly N123-045

22 Spindle N523-013

23 Outside housing 24088544

* Not sold separately as a part.

No. Description Part number

24 Inside hub 24085037

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

38 Spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

Schlage • ND-Series service manual • 21

Chassis

Time out lock with Vandlgard

ND45

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

11 Keycam assembly N123-011

22 Spindle N523-013

23 Outside housing 24088544

24 Inside hub 24085037

* Not sold separately as a part.

No. Description Part number

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

38 Spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

22 • Schlage • ND-Series service manual

Chassis

Entrance/oce and entrance lock

ND50 and ND53

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

3 Slide catch C604-188

4 Slide catch spring C604-191

6 Chassis screw L583-454

7 Keycam assembly N123-007

22 Spindle N523-013

23 Outside housing 24088544

* Not sold separately as a part.

No. Description Part number

24 Inside hub 24085037

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

38 Spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

Schlage • ND-Series service manual • 23

Chassis

Vestibule lock

ND60

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

7 Keycam assembly N123-007

22 Spindle N523-013

23 Outside housing 24088544

24 Inside hub 24085037

29 Slide N523-149

30 Slide clip N523-025

* Not sold separately as a part.

24 • Schlage • ND-Series service manual

No. Description Part number

37 Adjustment plate N523-054

38 Spindle N523-177

40 Plunger sleeve N523-063

41 Plunger N523-064

42 Cam pin N523-065

43 Cam N523-066

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

Chassis

Store lock

ND66

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

9 Keycam assembly N123-076

22 Spindle N523-013

23 Outside housing 24088544

25 Inside hub 24085060

* Not sold separately as a part.

No. Description Part number

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

44 Plunger bar N523-067

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

Schlage • ND-Series service manual • 25

Chassis

Classroom lock

ND70

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

10 Keycam assembly N123-010

22 Spindle N523-013

23 Outside housing 24088544

24 Inside hub 24085037

No. Description Part number

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

38 Spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

* Not sold separately as a part.

26 • Schlage • ND-Series service manual

Chassis

Special— classroom by storeroom lock

ND70X80

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

8 Keycam assembly N123-008

10 Keycam assembly N123-010

22 Spindle N523-013

23 Outside housing 24088544

* Not sold separately as a part.

No. Description Part number

25 Inside hub 24085060

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

Schlage • ND-Series service manual • 27

Chassis

Special— communicating lock

ND72

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

10 Keycam assembly N123-010

22 Spindle N523-013

23 Outside housing 24088544

25 Inside hub 24085060

No. Description Part number

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

* Not sold separately as a part.

28 • Schlage • ND-Series service manual

Chassis

Special— communicating lock with Vandlgard

ND72 Vandlgard

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

6 Chassis screw L583-454

12 Keycam assembly N123-012

22 Spindle N523-013

23 Outside housing 24088544

25 Inside hub 24085060

* Not sold separately as a part.

No. Description Part number

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

Schlage • ND-Series service manual • 29

Chassis

Corridor lock

ND73

Apply light ﬁlm of 100% synthetic grease on surfaces with brush.

No. Description Part number

1 Slide spring C503-019

2 Restoring slide catch C604-187

4 Slide catch spring C604-191

6 Chassis screw L583-454

10 Keycam assembly N123-010

22 Spindle N523-013

23 Outside housing 24088544

* Not sold separately as a part.

30 • Schlage • ND-Series service manual

No. Description Part number

24 Inside hub 24085037

29 Slide N523-149

30 Slide clip N523-025

37 Adjustment plate N523-054

38 Spindle N523-177

52 Gauge insert 23988066

53 Insert, inside hub N523-160*

+ 82 hidden pages

Allegion ND Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual