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CONSTANT FLOW
EMERGENCY OXYGEN PORTABLES

PART NUMBER(S)
Pp69T60l03
176960107
176960I08!
Elr7t6960%l!4'

pe9j60?29l

a^69j6lDI40T

fiESSSE

COMPONENT MAINTENANCE MANUAL

WITH
ILLUSTRATED PARTS LIST

ORIGINAL ISSUE: APR 30/91

REVISION 2: FEB 28/98 35-30-09 Feb 28/98

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 NELLCOR
PURITAN
BENNETT.
P U R I T A N - B E N N E T T

COM PON ENT MAINTENANCE MANUAL

176960-XX, 176961-11

LIST OF EFFECTIVE PAGES

Subject Page Date Subject Page Date

Highlights Page Highlights FEB 28/98 Disassembly 301 FEB 28/98

302 FEB 28/98
Title Page T-1 FEB 28/98 303 FEB 28/98
304 Blank
Record of Revisions RR-1 FEB 28/98
RR-2 Blank Cleaning 401 FEB 28/98
402 FEB 28/98
Record of Temporary RTR-1 FEB 28/98
Revisions RTR-2 Blank Inspection/Check 501 FEB 28/98
502 FEB 28/98
Service Bulletin List SBL-1 FEB 28/98 503 FEB 28/98
SBL-2 Blank 504 Blank

List of Effective LEP-1 FEB 28/98 Repair 601 FEB 28/98

Pages LEP-2 Blank 602 FEB 28/98

Table of Contents TC-1 FEB 28/98 Assembly 701 FEB 28/98

TC-2 Blank (Including Storage) 702 FEB 28/98
703 FEB 28/98
Introduction INT-1 FEB 28/98 704 FEB 28/98
INT-2 FEB 28/98
Fits and Clearances 801 FEB 28/98
Description and 1 FEB 28/98 802 Blank
Operation 2 FEB 28/98
3 FEB 28/98 Special Tools, Fixtures 901 FEB 28/98
4 FEB 28/98 and Equipment 902 Blank
5 FEB 28/98
6 FEB 28/98 Illustrated 1001 FEB 28/98
Parts List 1002 FEB 28/98
Testing and 101 FEB 28/98 1003 FEB 28/98
Fault Isolation 102 FEB 28/98 1004 FEB 28/98
103 FEB 28/98 1005 FEB 28/98
104 FEB 28/98 1006 FEB 28/98
105 FEB 28/98 1007 FEB 28/98
106 FEB 28/98 1008 FEB 28/98
107 FEB 28/98 1009 FEB 28/98
108 FEB 28/98 1010 FEB 28/98
109 FEB 28/98
110 FEB 28/98
111 FEB 28/98
112 Blank

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 • • NELLCOR
• — P U R I T A N
BENNETT.
P U R I T A N - B E M N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

TABLE OF CONTENTS

Subject Page

Introduction INT-1
General INT-1
Weights and Measurements INT-1
Abbreviations INT-1

Description and Operation 1

Description 1
Operation 5
Leading Particulars 6

Testing and Fault Isolation 101

Testing Equipment and Materials 101
Fault Isolation 111

Automatic Test Requirements (ATLAS) Not Applicable

Disassembly 301
Disassembly Equipment and Materials 301
Disassembly Procedures 301

Cleaning 401
Cleaning Materials 401
Cleaning Procedures 401

Inspection/Check 501
Check Equipment and Materials 501
Check Procedures 501

Repair 601
Repair Materials 601
Repair Procedures 601

Assembly (Including Storage) 701

Assembly Equipment and Materials 701
Assembly Procedures 701

Fits and Clearances 801

Torque Values 801

Special Tools, Fixtures and Equipment 901

Special Tools and Fixtures 901

Illustrated Parts List 1001

Introduction 1001
How to Use the Illustrated Parts List 1001
Abbreviations 1003
List of Vendors 1003

Page
35-30-09
 NELLCOR
PURITAN
BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

INTRODUCTION

1. General

A. This manual outlines procedures for the maintenance and overhaul of Puritan PN 176960 portable
oxygen cylinder assemblies equipped with PN 170086 (AN 6009 type) and PN 170088 outlets.

B. The instructions in this manual provide the information necessary to perform maintenance functions
ranging from simple checks and replacement to complete in-shop repair. All procedures have been
performed and verified acceptable by trained personnel at Puritan Bennett Aero Systems Co. A com-
petent shop mechanic who is unfamiliar with these units should, with a minimum of effort and tools,
be able to isolate the problems of a nonfunctional unit and restore it to service.

C. The testing and fault isolation procedures should be used first to determine the condition of the unit.
There are no cure date or limited life components in the unit, therefore disassembly and replacement
of parts are necessary only for units that do not satisfy minimum performance requirements or that
require hydrostatic testing.

NOTE: The recommended overhaul schedule for the regulator is every three years, not to exceed
five years. Overhaul coinciding with the five-year cylinder hydrostatic test would make for
efficient aircraft downtime. The elastomer components inside the regulator are silicone O-
ring and diaphragm. These components have a shelf life of at least 20 years, and see
very little wear while in use. Frequency of overhauling the regulator can depend on the
amount and severity of use.

D. None of the cylinder assembly component parts are repairable. Part numbers of replacement parts
can be obtained from the Illustrated Parts List or from the Repair section. An explanation of how to
use the Illustrated Parts List is provided in the Illustrated Parts List section. Some replacement parts
for vendor manufactured components are listed in the Repair section.

2. Weights and Measurements

A. All weights and measurements in the manual are based on design in English units. Listed ISO units
are soft conversions.

3. Abbreviations

A. A list of abbreviations used in this manual is presented below and on the following page.
Abbreviations are listed in their most commonly used form, however, they will have the same
meaning whether they appear in upper or lower case letters in the manual. The abbreviations are as
follows:

Abbreviation Meaning
AN Air Force-Navy Aeronautical Standard
ASSY assembly
C Celsius, temperature
CA California
CAGE Commercial and Government Entity code (formerly FSCM or Code Ident. No.)
cc/min cubic centimeters per minute, flow rate
CGA Compressed Gas Association of America

Page INT-1
57 Feb 28/98
 NELLCOR
PURITAN
BENNETT.
P U R I T A N - B E N N E T T
A E R O S Y S T E M S CO.

COMPONENT MAINTENANCE MANUAL

176960-XX,176961-11

Abbreviation Meaning
CFR Code of Federal Regulations (USA)
CT Connecticut
CO Colorado
cuft cubic feet, volume
DE Delaware
DOT
Department of Transportation (USA)
EFF
effectivity
F
Fahrenheit, temperature
FIG.
figure
ft-lbf
foot-pound(s) force, torque
GA
Georgia
Hg
mercury
in inch(es), length
in-lbf inch-pound(s) force, torque
IPL Illustrated Parts List
kg kilogram(s), mass
kPa kilopascal(s), pressure
kPag kilopascal(s) gauge, pressure

KS Kansas
Ibf pound(s) force, force
Ibm pound(s) mass, mass
LP low pressure
LPM liter(s). per minute, flow rate

m meter(s), length
mm millimeter(s), length
MOD modification
MS Military Standard

NJ New Jersey
N-m newton-meter(s), torque
No. number
NPT American Standard Taper Pipe Thread
NTPD Normal Temperature and Pressure, Dry (21.1°C, 101,325 kPa, zero % humidity)

PB Puritan Bennett Aero Systems Co.

PN part number
psig pound(s) per square inch gauge, pressure
RF reference

SPEC specification
STPD Standard Temperature and Pressure, Dry (0°C, 101,325 kPa, zero % humidity)
V vendor

Page INT-2
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' ^ W F M ^ PURITAN
^ ^ M BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

DESCRIPTION AND OPERATION

1. Description (refer to Figures 1 thru 3 and Tables 1 and 2)

A. This manual provides overhaul instructions for PN 176960 and 176961-11 series constant flow
airline type emergency oxygen portables with PN 170086 and 170088 style outlets. The portables
are available in three basic cylinder sizes (4, 7, and 11 cu ft) (see Figure 1). Usually, portables of this
type are strategically located throughout an aircraft for easy access by cabin attendants and crew
members. The portables are for use with constant flow oxygen mask assemblies (mask assemblies
are not covered by this manual) which plug into the PN 170086 and 170088 style oxygen outlets.

NOTE: On PN 176960-29 the outlet (PN 170016) is a threaded connector, which mates with the
mask assembly hose connector.

B. PN 176960 and 176961-11 emergency oxygen portables come in many configurations which include
variations in cylinder size, cylinder external finish, number of outlets, carrying strap, type of safety fit-
ting, number of mask assemblies, and flow rates from the outlets. Visible distinguishing
characteristics of each configuration are listed in Table 1 and depicted in Figure 1.

Table 1. Unit Identification Chart

Portable Assembly Dash Number

176960-XX
Characteristic 176961-11 03 07 08 13 14 16 26 29 38 40

Cylinder Size (cu.ft.) 11 4 4 4 7 7 7 11 11 11 11

Cylinder Color
Dark Green - — D - D D D — D D D
Light Green L L - L - - - L - - -

Number of Outlets 3 2 2 1 2 2 2 2 1 2 2
Strap Retention
Neck & Clamp N N N - N N N N N N —

Two Clamps - - - 2C - - - - - - 2C
Safety Fitting Type
Fusible Plug* - - FP FP - - — — — FP FP
Ambient A A - - A A A A A - -

Number of Masks 3 - 1 - 1 2 1 - 1 1 -

Tote Bag for Masks - - - - B B B - B - -

*The fusible plug type of safety fitting was obsoleted in 1990 and replaced by the ambient type.

35-30-09 Feb 28/98

 P^M NELLCOR
PURITAN
^^m BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

PN 176960-03

PN 176960-13
PN 176960-14
PN 176961-11

PN 176960-26 PN 176960-29 PN 176960-38 PN 176960-40

Model 176960 Constant Flow Oxygen Portables

Figure 1

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 NELLCOR
PURITAN
^TATF BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

C. All Model 176960 portables use a PN 172034-01 basic regulator. This regulator has an output pres-
sure of approximately 52 to 58 psig, depending on flow rate, and is usually about 55 psig at the flow
rates used for the portables. A cross-section of the regulator is shown in Figure 2.

D. Other regulator dash numbers are listed in the Illustrated Parts List. Each dash number denotes a
combination of the basic regulator and a different type of safety fitting. Different safety fittings are
required by different companies and regulatory agencies. Whenever a regulator is overhauled, the
acceptability of the type of safety fitting should be reviewed and verified to assure it complies with
current company and agency requirements.

E. Most of the portables have two outlets attached to the regulator, with the exception of PN 176960-08
and 176960-29, which have one outlet, and PN 176961-11, which has three outlets. A typical PN
170086 or 170088 outlet and the PN 173720 connector which mates with it are depicted in Figure 3.
The mating connector part number is listed for reference only, as the connectors are normally
attached to the oxygen mask assembly and are included in that part number. On PN 176960-29 the
outlet (PN 170016) is a threaded connector, which mates with the mask assembly (40B) hose
connector. The mask assembly (40B) hose connector is lock wired around the base of the pressure
gauge (50).

F. Prior to overhaul or disassembly of a series 176960 portable, the particular assembly should be
identified. Refer to the nameplate located on the side of the cylinder to determine the complete
176960 assembly part number. After determining the part number, refer to Figure 1 and IPL Figure 1
to confirm the assembly configuration and to identify the particular assembly components.

Page 6
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/
 NELLCOR
PURITAN
BENNETT.
p u r i t a n - b e n n s t t

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

172034-01
Figure 2

Page 6
35-30-09 Feb 28/98
 m m I NELLCOR
PURITAN
^tatf BENNETT.

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

M > ^

H
> <

PN 170086
(o
•
1 PN 173720
r\
I
j

O
)
PN 170088-74

Oxygen Outlet and Mating Connector

Figure 3

Operation

A. To operate the emergency oxygen portable cylinder assembly (1-1), rotate the green regulator
control handle counter-clockwise from the OFF to the ON position to pressurize outlets. Insert a PN
173720 connector, designed for use with the PN 170086 or 170088 style outlets, into an outlet to
initiate flow. After inserting the bayonet connector, rotate it to lock the "J" slots over the outlet pins.

NOTE: On PN 176960-29, the oxygen mask connector is lock wired to the pressure gauge to pre-
vent removal from the emergency oxygen portable assembly, and is ready for operation
by fully rotating the green regulator control handle counter-clockwise.

B. The flow that each outlet will supply when actuated by the connector is marked and color coded on
the large instruction decal located on the cylinder. Color codes and flow rate at altitude also are
marked on each individual outlet. After use, the oxygen mask connectors must be disconnected from
the outlets and the regulator handle turned to the OFF position prior to storage of the portable.

35-30-09 Feb 28/98

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PURITAN
BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

C. A pressure gauge attached to the regulator body indicates cylinder pressure regardless of control
handle position, whether ON or OFF. The cylinder can be refilled through the charge valve located
on the side of the cylinder pressure regulator. Standard "airline" type fill connectors with .562-18-2B
thread will mate with either type of charge valve, and must be utilized for refilling. The regulator
handle should be in the OFF position during refilling.

D. The safety port contains a high pressure rupture disc to vent high pressure oxygen to the
atmosphere in the event of cylinder overpressure. The safety fitting is located on the back of the
regulator body. A fusible backed safety fitting was used in some cylinder assemblies (1-1), but it has
been replaced by a frangible burst disc. Use of the frangible disc permits the cylinder to be
overcharged to 10 percent above its normal service pressure.

3. Leading Particulars

A. Leading particulars for the constant flow oxygen portable are listed in Table 2.

Table 2. Leading Particulars

Item Characteristic

Service Aviators Breathing Oxygen (MIL-0-27210, Type 1)

Charge Pressure 12,410 kPag at 21 °C (1800 psig at 70°F) for DOT 3AA-1800
12,755 kPag at21°C (1850 psig at70°F)for E8162-1850
DOT Cylinder Rating DOT 3AA-1800 (176960-XX)
DOT E8162-1850 (176961-11)
Cylinder Volume 120, 205 or 315 liters (4, 7 or 11 cu ft) for DOT 3AA-1800
311 liters for E8162-1850
Cylinder Pipe Thread (Steel) 1/2-14 NPT for DOT 3AA-1800
Cylinder Pipe Thread (Composite) 3/4-16 UNF-2B for E8162-1850
Handle Torque Approximately 0,45 N*m (4 in-lbf)
Outlet Mating Connector Type MS21964-20
Weight (Charged)
(176960 Cylinder Assembly) Approximately
120 liter (Steel) 2,2 kg (4.9 Ibm)
205 liter (Steel) 2,9 kg (6.3 Ibm)
315 liter (Steel) 3,4 kg (7.4 Ibm)
(176961-11 Cylinder Assembly) Approximately
311 liter (Composite) 2,6 kg (5.7 Ibm) for DOT E8162-1850

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 P ^ M NELLCOR
PURITAN
^TAM BENNETT.
P U R J T A N B 6 N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

TESTING AND FAULT ISOLATION

1. Testing Equipment and Materials

A. The materials required for testing of the cylinder assembly (1-1) are listed in Table 101 below.
Equivalent substitutes may be used for listed items.

Table 101. Test Equipment and Materials

Nomenclature Part or Spec No. Source (CAGE)

Leak Detector Fluid MIL-L-25567 Commercially Available

Type 1

Test Gas* See Below Commercially Available

Flowmeter 0-10 Ipm Commercially Available

Pressure Gauge 100 psig Commercially Available

Pressure Gauge 2000 psig Commercially Available

Hydrostatic Test Machine Model Galiso Corporation

MAK-3B-18 Montrose, CO (26220)

Leak Detection Machine Type H-25 Yokogawa of America

Newnan, GA (60336)

*Any of the following gases can be used for testing:

(1) Oxygen per MIL-0-27210, Type 1.
(2) Water-pumped nitrogen per MIL-N-6011.
(3) Water-pumped air equal in dryness to MIL-N-6011.

B. Hydrostatic Test (refer to IPL Figure 1).

(1) Inspect the cylinder (240) using the procedure outlined in Inspection/Check section.

(2) Determine the date of the last hydrostatic test (see decal on the neck of cylinder). If cylinder
(240) does not need a hydrostatic test, skip to paragraph C, Regulator Performance Testing,
below.

NOTE: To comply with Department of Transportation Regulations, Title 49, the DOT 3AA-
1800 Oxygen Cylinder must be retested hydrostatically every five years, the DOT
3HT-1850 Oxygen Cylinder every three years.

(3) Disassemble oxygen cylinder by performing cylinder and fitting disassembly, Section 2A, steps
1 through 8. Remove regulator (146) from the cylinder (240). Nameplates (235) and (236) may
remain on the cylinder (240) for hydrostatic testing.

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 NELLCOR
' ^ W S M ^ PURITAN
WMM BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

(4) Perform hydrostatic testing using the Galiso Model MAK-3B Hydrostatic Cylinder Test Unit and
operating manual. The pressure gauge must be accurate within one percent in the range
between 17,235 and 25,510 kPag (2500 and 3700 psig). The expansion gauge must be
accurate within one percent or 0.1 cc.

(5) After hydrostatic testing of cylinder, mark in accordance with Federal Regulation Title 49, para-
graph 173.34 (e) (7), for retester markings.

C. Regulator Performance Testing (refer to IPL Figure 1).

(1) The normal operating parameters of the cylinder mounted regulator assembly (146) are pre-
sented in Table 102.

Table 102. Regulator Performance Characteristics

Regulator Inlet Pressure

Characteristic Units 1380 kPag 12,755 kPag
(200 psig) (1850 psig)
Leakage - Internal cc/min 0 0
Leakage - External cc/min 0 0
Inlet Pressure Range: 1380-12,755 kPag — —

200-1850 psig - -

Outlet Pressure with Handle kPag 360-400 360-400

(155) ON and Zero Flow Rate psig greater than 35 psig 52-58
Relief Pressure kPag 550-760 550-760
psig 80-110 80-110

(2) Install the regulator assembly (146) in a test setup as shown in Figure 101. The outlets (80, 90)
may be left in the regulator ports.

(a) If testing the regulator assembly (146) attached to a cylinder (240), the cylinder can be
charged through the charge valve (52) to its rated service pressure of 12,410 kPag (1800
psig) for 176960-XX or 12,755 kPag (1850 psig) for 176961-11. The cylinder assembly
gauge and ON/OFF cap (155) can be used in place of the gauge and valve shown in
Figure 101.

(b) If the regulator assembly (146) is detached from the cylinder, attach a high pressure
source to the 1/8-inch NPT internal pipe port located at the end of the 1/2-inch NPT
regulator mounting thread.

(c) Initial tests can be performed with all fittings installed.

(d) If the regulator assembly (146) satisfies the requirements of steps 3 through 6 below, then
the regulator does not need overhaul and it is not necessary to perform steps 7 and 8.

35-30-09 Feb 28/98

 NELLCOR
PURITAN
BENNETT.

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

GAUGE GAUGE
2000 2000
PSIG PSIG
VALVE
A

REGULATED ,
PRESSURE V
SOURCE

BEAKER
OF
WATER

Regulator Functional Test Setup Schematic

Figure 101

(3) Test for external leakage (refer to Figure 101).

(a) Close valves B and C.

(b) Open valve A. Pressurize the regulator assembly (146) inlet to 12,755 kPag (1850 psig).

(c) Turn the regulator cap (155) to the full ON position.

(d) Apply MIL-L-25567 leak detection fluid to the following areas:

1 Thread of pressure gauge (50) entering regulator assembly (146).

2 Thread of charge valve (52) entering regulator assembly (146).

3 Thread of safety fitting assembly (215) entering regulator assembly (146).

4 Vent hole on side of regulator assembly (146) (refer to Figure 2).

5 Check all outlets (80, 90) and the charge valve assembly valve core (56) by
pulling a film across the open end of the fitting and observing whether the bubble
bulges and/or breaks.

NOTE: If leakage is detected, do not attempt to tighten any connections while

the emergency oxygen portable assembly (1) is charged. Empty the
emergency oxygen portable assembly to zero pressure before
proceeding with necessary repairs.

(e) Turn regulator cap (155) to the full OFF position.

35-30-09 Se2
 NELLCOR
PURITAN
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P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

Test for internal leakage (refer to Figure 101).

(a) Turn the regulator cap (155) to the full OFF position. Close valves B and C.

(b) Open valve A. Apply 12,755 kPag (1850 psig) to the regulator assembly (146) inlet.

(c) Submerge the free end of the tube about 25 mm (1.0 in) below the surface of a beaker of
water. Be careful to prevent entrance of water into the regulator assembly (146).

(d) Observe the end of the tube. After all trapped bubbles have dissipated, there shall be no
bubbles emanating from the tube during a two minute check period.

(e) If the regulator assembly (146) has internal leakage, as determined from the above test,
disassemble the regulator per Disassembly section, except leave all fittings installed.
Test the disassembled regulator per step 7 of this paragraph. Refer to the Table 104
(Fault Isolation) for suggestions on eliminating external leakage.

Regulator Outlet Pressure Check (refer to Figure 101).

(a) Turn the regulator cap (155) to the full OFF position.

(b) Close valves B and C.

(c) Open valve A. Raise the regulator assembly (146) inlet pressure to 12,755 kPag (1850
psig).

(d) Rotate the regulator cap (155) to the ON position. Allow the pressure at the gauge to sta-
bilize. Read and record the output pressure.

(e) Reduce the regulator assembly (146) inlet pressure to 1380 kPag (200 psig) and repeat
step (d) above.

(0 Turn the regulator cap (155) to the OFF position.

(g) If the regulator assembly (146) outlet pressure was out of range at either inlet pressure,
adjust the pressure according to step 8 below.

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 P ^ M NELLCOR
— P U R I T A N
^TATF BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

Relief Pressure Check (refer to Figure 101).

(a) Close valves A and C. Open valve B. Turn the regulator cap (155) to the ON position.

(b) To avoid damage to the outlet fittings (80, 90), replace them with fittings capable of with-
standing 200 psig.

WARNING: APPLICATION OF PRESSURE OVER 150 PSIG IN THIS TEST CAN RESULT
IN INJURY TO THE TESTER AND ALSO CAN DAMAGE THE REGULATOR.

(c) Slowly open valve A to increase pressure to the regulator assembly (146). Do not exceed
825 kPag (120 psig), as registered on the 200 psig gauge.

(d) Apply leak detector fluid to the regulator body vent hole (refer to Figure 101) and observe
for bubbles. Listen for sounds of leakage from the vent hole or under the regulator cap
(155). Record the pressure at which the regulator relief valve opens.

(e) If the relief pressure is out of the range listed in Table 102, disassemble the regulator
assembly (146) and replace the O-ring (195).

(f) Close valves A and B before removing the regulator assembly (146) from the test setup.

Nozzle Assembly Leakage Test.

NOTE: This test is conducted during assembly with all regulator assembly (146) parts
removed except the nozzle assembly (196) and the high pressure fittings.

(a) Slowly apply 12,755 kPag (1850 psig) pressure to inlet of regulator body assembly (197)
using dry, oil-free air or dry nitrogen.

(b) With regulator body assembly (197) upright, apply oxygen leak detection solution per
MIL-L-25567 into the small exposed hole (facing up) of the nozzle assembly (196). If
bubbles are observed, remove and replace the nozzle assembly.

(c) Use brush to apply leak detection solution around hex flats of nozzle assembly (196)
adjacent to regulator body assembly (197). If bubbles are observed, depressurize the
regulator inlet and tighten the nozzle assembly to the torque specified in Table 801.
Repressurize the regulator assembly (146) and recheck for leakage. If bubbles are
observed, remove and replace the nozzle assembly (196).

(d) Reduce the regulator assembly (146) inlet pressure to 1380 kPag (200 psig) and repeat
the tests in steps (b) and (c) above.

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PURITAN
BENNETT.
BENNETT

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

Regulator Outlet Pressure Adjustment.

(a) Install the regulator assembly (146) in a test setup as shown in Figure 101.

(b) Plug one outlet port with a 1/8-inch NPT pipe plug, or install an appropriate outlet (80,
90).

(c) Attach a test apparatus which includes a 0 to 670 kPag (0 to 100 psig) pressure gauge
and shutoff valve to remaining outlet port (see Figure 101). Place the shutoff valve
downstream of the pressure gauge. Close the shutoff valve.

(d) Apply an inlet pressure of 12,755 kPag (1850 psig) to the regulator assembly (146) inlet
port.

(e) Invert the regulator cap (155) and place it onto the splined shaft extending from regulator
assembly (146).

(f) Slowly rotate the inverted regulator cap (155) counter-clockwise while observing the
pressure increase on the downstream pressure gauge. Continue rotating until 393 kPag
(57 psig) is observed on the pressure gauge.

(g) Remove the regulator cap (155) and return it to its normal orientation.

(h) Position the cap (155) above the regulator body (198) such that the side of the tang next
to the word ON is as close to the indicator button (199) on the side of the regulator body
(198) as possible.

(i) Slide the cap (155) onto the splined shaft. A slight pressure variation from 393 kPag (57
psig) is permissible when the handle is installed since a slight rotation of the protruding
shaft will normally be required to move the handle tang next to the indicator button (199).

(j) If necessary, the regulated pressure can be increased slightly by advancing the setscrew
(165) with an Allen wrench. The outlet pressure is very sensitive to changes in the
position of the setscrew.

(k) After adjustment is completed, rotate the cap (155) to the OFF position and open the
shutoff valve. Outlet pressure should fall to zero.

(I) Close the shutoff valve and open the regulator cap (155) to the ON position. Observe
pressure gauge. There should be no noticeable "creeping" of the regulated "Lockup"
pressure. Repeat the test, several times.

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PURITAN
B I BENNETT.
P U R I T A N - B E N N E T T

COM PONENT MAINTENANCE MAN UAL

176960-XX, 176961-11

(m) Carefully remove the regulator cap (155) without disturbing position of the serrated shaft.
Rotate plate (175) with ON/OFF decal (179) attached until the word ON, on the decal,
appears through window of handle when handle is reattached. Secure setscrew (174) to
prevent movement of plate (175).

(n) Reinstall the regulator cap (155) and rotate from ON to OFF several times. Detent action
of ball (178) into grooves of handle shall be felt in both open and closed positions.

(o) Complete assembly of regulator assembly (146) per instructions in Assembly section.

D. Outlets Flow Test (refer to IPL Figure 1).

(1) The PN 170086 outlets (80, 80A, 80B, 80C, 90, 90A, 90B), or PN 170088 outlets (90C, 90D),
are laminar flow types with adjustable glass wool packing. Determine the outlet flow rate and
altitude setting by relating to the instruction decal (236) on the emergency oxygen portable
assembly (1) (see Figure 1). Also, the emergency oxygen portable assembly part number is
stamped on the identification decal (235) on the side of the cylinder (240). Finally, flow and
altitude values are rubber stamped on the individual outlets themselves. Flow rates are
stipulated in LPM-STPD (760 mm Hg at 32°F) unless otherwise noted.

NOTE: On emergency oxygen portable (1) (PN 176960-29), the outlet (PN 170016) (90E) is a
flow-thru orifice that is factory drilled for the correct flow and cannot be adjusted.

(2) Outlet Flow Test Check and Adjustment.

(a) Screw the outlet (80 or 90) into a female 1/8-inch pipe thread port connected to an
oxygen line at a controlled pressure of 50 psig (refer to Figure 102). Apply leak test
solution per MIL-L-25567 to all outlet body joints. Pull a film of leak detector solution over
the main outlet passage. Bubbles indicate leaks which must be corrected.

(b) Insert a PN 173720 connector (41) into the outlet (80 or 90). The connector must be
attached securely and must open the valve inside the outlet assembly, thus allowing
oxygen to flow.

NOTE: On emergency oxygen portable (1) (PN 176960-29), use a PN 173708 hose
connector attached to outlet (90E) for paragraph (b).

(c) Shut off oxygen flow to the outlet (80 or 90). Connect a 0-10 LPM flowmeter, accurate
within ±1% and calibrated for oxygen, to a hose connected to the mask plug-in
connector.

(d) Apply 50 psig oxygen pressure upstream of the outlet (80 or 90) and observe flow at the
flowmeter. The flow from a particular outlet is dependent upon the outlet's usage. Each
outlet is coded by part number, flow markings, and color for a particular setting. Required
flow settings at sea level to obtain a specific flow at altitude are listed in Table 103.

NOTE: Table 103 flow settings are applicable to packed orifice type outlets only. If the
flow from the tested unit does not agree with the values in the table, it should be
adjusted to comply. The procedure for adjustment is listed below.

35-30-09 fT2
 NELLCOR
PURITAN
^ t a BENNETT.
P U R I T A N - B E N N E T T
A E R O S Y S T E M S CO.

TO: HOLDERS OF COMPONENT MAINTENANCE MANUAL 35-30-09 FOR CONSTANT FLOW

EMERGENCY OXYGEN PORTABLES, PART NUMBERS 176960-03, -07, -08, -13, -14, -16, -26, -29, -38, -40,
AND 176961-11.

REVISION NO. 2 Dated February 28.1998

HIGHLIGHTS

This is a reissue of the Component Maintenance Manual. Replace the existing CMM, dated July 1/95, with
this reissue, dated February 28/98. Dispose of the Highlights page once the change has been completed.

Page No. Description of Change Effectivity

All Pages Updated style and format to conform to ATA spec. All Part Numbers

All Sections Updated to conform to ATA spec. All Part Numbers

Added additional technical content. All Part Numbers

Front Matter Revised to reflect this revision. All Part Numbers

illustrated Parts List Revised to reflect this revision. All Part Numbers

Hi9h
35-30-09 tb
 NELLCOR
PURITAN
BENNETT.
P U R I T A N - B f N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

GAUGE
0-100 FLOW FLOWMETER
PSIG CONTROL OUTLET 0-10 LPM

Outlet Flow Rate Test Setup Schematic

Figure 102

(e) Remove the oxygen line from the outlet (80 or 90). Flow adjustment for all outlets
containing glass wool is obtained by compressing the glass wool. This is accomplished
with the adjusting screw located at the end of the 1/8-inch male pipe thread. Threading
the screw into the outlet decreases flow. Adjust and retest the outlets until the desired
flow is obtained.

NOTE: Threading the screw out will not increase the flow, since the glass wool will not
expand once it has been compressed. Adjustments for decreasing the flow
should be made very carefully; once the adjustment has been made the only
method for increasing the flow is to repack the outlet assembly with glass wool
and readjust.

Table 103. Outlet Ground Level Flow Rate Settings

Altitude Flow Required Ground Level Flow Setting

LPM-STPD* in LPM-NTPD (760 mm Hg ® 21 °C)
760 mm Hg Altitude -Feet/1000
@70°F
5 10 15 20 23 25 30
2 to 2,3 2,32 2,50 2,64 2,70 2,80 2,84 2,92
4 to 4,6 4,28 4,46 4,59 4,76 4,79 4,81 4,86
6 to 6,9 6,21 6,33 6,44 6,53 6,70 6,72 6,77

*To convert LPM-STPD to LPM-NTPD, multiply by 1.077

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(3) Outlet Final Flow Test.

(a) Attach outlets (80, 90) to the regulator assembly (146) outlet ports. Refer to the IPL
Figure 1 to determine in which port each outlet should be mounted.

NOTE: The high flow outlet normally is attached to the port on right [facing the pressure
gauge (50)].

(b) Connect the flowmeter to the high flow outlet (80, 90, 90A, 90B 90D, 90E) and turn the
green control cap (155) to the full ON position. Observe flow rate and verify it complies
with Table 103. If the outlet flow rate does not fall within the allowed tolerance band,
check and readjust as necessary the outlet flow rate or regulator assembly (146)
pressure setting.

(c) Conduct the same test for the low flow outlet (80A, 80B, 80C, 90C).

NOTE: Cylinder pressure must be at 12,410 kPag (1800 psig) for 176960-XX or 12,755
kPag (1850 psig) for 176961-11 for these tests.

Fittings Test (refer to IPL Figure 1).

NOTE: These tests are more easily performed if the fittings are removed from the regulator
assembly (146).

WARNING: TESTING PARTS AND ASSEMBLIES WITH HIGH PRESSURE OXYGEN CAN BE
HAZARDOUS. VERIFY ALL FITTINGS ARE TIGHTLY ATTACHED BEFORE
APPLYING HIGH PRESSURE. ALL PARTS, INCLUDING NEW PARTS, MUST BE
CLEAN. GIVE SPECIAL ATTENTION TO HYDROCARBON RESIDUES BECAUSE
THEY CAN IGNITE SPONTANEOUSLY IN THE PRESENCE OF HIGH PRESSURE
GASEOUS OXYGEN.

(1) Verify the function of the charge valve (52) or charge valve (52A) as follows:

(a) For charge valve (52) only:

1 Remove the cap from the charge valve (52) and attach the normally capped end
to a low pressure (700 kPag/100 psig) source. Slowly increase the supply
pressure. The charge valve should open at a pressure of 552 kPag (80 psig) or
less.

2 Recap the charge valve (52). Attach a high pressure line to the pipe thread.
Apply a pressure of 12,755 kPag (1850 psig). Use leak detector fluid to check
the capped end for leakage. If leakage is observed, replace the cap assembly
(see Repair section).

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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

(b) For charge valve (52A) only:

1 Remove the cap (57) from the charge valve (52A) and attach the normally
capped end to a low pressure (700 kPag/100 psig) source. Slowly increase the
supply pressure. The charge valve should open at a pressure of 552 kPag (80
psig) or less.

2 Recap the charge valve (52A). Attach a high pressure line to the pipe thread.
Apply a pressure of 12,755 kPag (1850 psig). Use leak detector fluid to check
the capped end for leakage. If leakage is observed, replace the cap assembly
(57) or the valve core (56) (see Repair section).

(2) Verify the function of the gauge (50).

(a) Mount the gauge (50) to a high pressure source (12,755 kPag/1850 psig) in parallel with
a previously calibrated master gauge.

(b) Apply a pressure of 12,755 kPag (1850 psig) to the gauges.

(c) Slowly decrease the pressure to the gauges and read the pressures. The cylinder
assembly gauge (50) must read within 60 psig of the master gauge in the ranges 10,340
to 13,790 kPag (1500 to 2000 psig) and 0 to 3450 kPag (0 to 500 psig). The gauge must
read within 40 psig of the master gauge in the range from 3450 to 10,340 kPag (500 to
1500 psig).

(d) If the gauge (50) is out of calibration, either replace it or return it to the manufacturer for
readjustment.

(3) Verify the safety fitting assembly (215) is leak free. Apply 12,755 kPag (1850 psig) to the
regulator assembly (146) inlet and apply leak detector fluid around the safety fitting assembly
(215) thread. Draw a film across the safety fitting outlets. If leakage is observed, remove and
reinstall the unit, replacing parts as necessary.

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2. Fault Isolation (refer to IPL Figure 1)

A. Table 104 lists the probable causes and remedies for faults which may be observed during testing.

Table 104. Fault Isolation

Fault Probable Cause Remedy

Cylinder (240) Fails Hydrostatic Test Prior Overpressurization Replace Cylinder

Outlet Pressure Increases at Zero Main Seat Leakage Replace Nozzle Assembly
Flow Condition
Leakage Through Top of Regulator O-Ring Leakage Replace O-Ring
(146)
Leakage When Regulator (146) is Nozzle Assy (196) Seal Leakage Tighten Nozzle Assembly to
OFF Proper Torque
Nozzle Assy (196) Seat Leakage Replace Nozzle Assembly
Outlet Pressure Out of Range Adjust Screw Out of Position Reset Adjust Screw
Leakage Through Vent Hole Damaged O-Ring Replace O-Ring
Outlet Assembly (80 or 90) has Regulator (146) Pressure Setting Adjust Regulator
Improper Flow Rate
Outlet Flow Setting Incorrect Adjust Outlet Flow Rate
Pressure Gauge (50) Displays Faulty Gauge Replace Gauge
Wrong Pressure
Leakage Through Fill Valve (52A) Leaky Valve Core (56) Replace Valve Core
Leakage Through Fill Valve (52) Damaged Seat Replace Fill Valve
Leakage Around External Fittings Low Torque Tighten to Proper Torque
No Tape Tape Threads
Damaged Threads Replace Fitting

Pag
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 NELLCOR
PURITAN
BENNETT.
P U R I T A N - B E N N E T T
A E R O S Y S T E M S CO.

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

DISASSEMBLY

1. Disassembly Equipment and Materials

A. Prior to disassembly, carefully read all instructions applicable to the item of equipment undergoing
maintenance.

B. Test each unit in accordance with the procedures in Test and Fault Isolation section. Refer to the
fault isolation information in Table 104 to determine the condition of the unit and the most probable
cause of any malfunction. That will determine the extent of disassembly required to effect necessary
repairs without complete teardown of the unit.

C. Tools and equipment required for disassembly are listed in Table 301. Equivalent substitutes may be
used for listed items.

Table 301. Disassembly Equipment

Nomenclature Part or Spec No. Source (CAGE)

Needle Valve Commercially Available

Pin Wrench 970522 Puritan (16827)

2. Disassembly Procedures

A. Cylinder and Fittings Disassembly (refer to IPL Figure 1).

WARNING: OXYGEN CYLINDERS MUST BE COMPLETELY DISCHARGED PRIOR TO

REMOVAL OF ANY COMPONENTS.

WARNING: DO NOT VENT THE CYLINDER PRESSURE IN AN AREA WHERE THERE IS

HYDRAULIC FLUID, FUEL, OR ELECTRICAL EQUIPMENT.

(1) With control cap (155) in the OFF position, remove one outlet (80 or 90) from regulator body
(198). Do not attempt to remove remaining outlet or plug (130), charge valve (52), pressure
gauge (50), or safety fitting assembly (215) at this time.

(2) After removal of outlet (80 or 90), attach to the open outlet port a short piece of hose or line with
a needle valve connected to the end of the line. With the needle valve closed, rotate the
regulator control cap (155) to the full ON position. Slowly open the needle valve until a flow of
approximately 20 LPM vents to atmosphere.

NOTE: On PN 170960-29, cut the lock wire from the mask assembly (40B) hose connector
and disconnect the hose connector from the outlet (90E). Rotate the regulator control
cap (155) to the full ON position and vent to the atmosphere.

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(3) Allow the emergency oxygen portable assembly (1) pressure to decay until the pressure gauge
(50) reads zero psig.

(4) Open the needle valve fully after pressure gauge (50) reads zero to assure discharge of any
trapped residual oxygen.

(5) Remove bag (10 or 20) containing oxygen mask (25 or 40) from applicable units:

(a) For 176960-07/-38, slip band (5) from cylinder (240) and remove bag (10) containing
mask (25).

(b) For 176960-13/-14/-16 and -29 open the loose leaf ring (15) and slip tote bag (20) cord
along cylinder (240) to remove tote bag containing mask (40).

WARNING: DO NOT DISASSEMBLE THE PORTABLE OXYGEN ASSEMBLY IN THE

PRESENCE OF HYDROCARBONS SUCH AS FUELS OR OILS. CONDUCT
DISASSEMBLY, REPAIR, AND OVERHAUL IN THE CLEANEST AREA POSSIBLE.
USE ONLY CLEAN TOOLS, FREE OF ALL OILS AND CONTAMINANTS.

(6) Remove pressure gauge (50), charge valve (52), and the remaining outlet (80 or 90) or plug
(130) from the regulator (146). Do not remove the safety fitting (215) from the regulator unless
testing has shown it is leaking and must be replaced.

NOTE: Do not attempt further disassembly of the above fittings. See Repair section for repair
or replacement parts for the fittings.

(7) Loosen captive screw of clamp (135). Remove clamp and strap (140) from cylinder.

(8) Do not remove decals (230, 231, 235, 236) unless damaged.

Regulator Disassembly (refer to IPL Figure 1).

NOTE: The oxygen regulator assembly (146) can be overhauled without removing the regulator
body (198) from the oxygen cylinder (240). To prevent galling of the pipe threads on the
regulator and cylinder during disassembly and reassembly, regulator removal is not
recommended unless obvious damage has occurred to the unit, or the cylinder is due for
hydrostatic retesting, in which case removal is required.

(1) Hold the regulator cap (155) firmly in position by hand while using a standard 1/8-inch Allen
wrench to remove the cap screw (170).

(2) With regulator assembly (146) in upright position, grasp regulator cap (155) and remove by
lifting straight up.

(3) Do not remove Teflon bushing (171) from the regulator cap (155) unless inspection indicates
the need for replacement.

(4) Remove two washers (172) and spring washer (173).

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(5) Remove setscrew (174) using a standard 3/32-inch Allen wrench.

(6) Remove plate (175) from cap assembly (180). Do not remove ON/OFF decal (179) from plate
(175) unless inspection indicates the need for replacement.

(7) Remove detent spring (176), button (177), and ball (178) from plate.

(8) Remove cap assembly (180) from regulator body (198), using special socket wrench (PN
970522) (see Figure 901).

CAUTION: EXERCISE EXTREME CARE IN HANDLING DIAPHRAGM ASSEMBLY (191) TO

PREVENT DAMAGE TO THE SMALL CURVED DIAPHRAGM ACTIVATING PIN. IF
THIS PIN IS BENT OR DEFORMED, ERRATIC REGULATOR OPERATION WILL
RESULT. DO NOT ATTEMPT FURTHER DISASSEMBLY OF THE DIAPHRAGM
ASSEMBLY.

(9) Remove washer (186), button (187), springs (188,189), plate (190), and diaphragm assembly
(191) from inside regulator body (198).

(10) Remove and discard O-ring (195).

(11) Use a 5/8 hex socket wrench to remove nozzle assembly (196). Do not attempt further disas-
sembly of the nozzle assembly.

(12) Remove safety fitting assembly (215) from the regulator body (197) only if necessary to
replace parts due to leakage, damage, or configuration update. Remove as follows:

(a) For 176960-13/-14/-16/-26/-29 units only, remove fitting (216), burst disc (217), and
washer (218).

(b) As applicable for 176960-03/-07/-08/-38/-40 units, remove plug (221), burst disc (222),
and washer (223) whenever obsolete safety fitting assembly (220) is still used.

(13) Do not remove button (199) from regulator body (198) unless damaged.

(14) Do not remove nameplate (200) or warning decal (201) from regulator body assembly (197)
unless there is a need for replacement.

(15) Do not remove body assembly (197) from the cylinder (240) unless the body is damaged and
requires replacement, or the cylinder is due for hydrostatic testing.

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• — P U R I T A N
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P U R I T A N - B E H N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

CLEANING

1. Cleaning Materials

A. The materials required for cleaning all emergency oxygen portable assembly (1) parts are listed in
Table 401. Equivalent substitutes may be used for listed items.

Table 401. Cleaning Materials

Nomenclature Part or Spec No. Source (CAGE)

Cleaner Kelite #28 Kelite Chemicals

Los Angeles, CA (81031)

Degreaser RHO-TRI 135 RHO-CHEM Corp.

Inglewood, CA (21414)

Air Dryer Model SCD-8 Galiso Corporation

Montrose, CO (26220)

Water-Pumped Dry Air Equivalent Commercially Available

MIL-L-6011

Inspection Light None Commercially Available

2. Cleaning Procedures

A. Cylinder Cleaning (refer to IPL Figure 1).

WARNING: ALL PARTS, INCLUDING NEW PARTS, MUST BE CLEANED BEFORE ASSEMBLY.
GIVE SPECIAL ATTENTION TO HYDROCARBON CARBON RESIDUES BECAUSE
THEY CAN IGNITE SPONTANEOUSLY IN THE PRESENCE OF HIGH PRESSURE
GASEOUS OXYGEN. USE FRESH CLEANING AGENTS ONLY, AS
CONTAMINATED CLEANING AGENTS CAN LEAVE DEPOSITS OF FOREIGN
MATERIALS AFTER EVAPORATING.

(1) The cylinder (240) must be inspected (refer to Inspection/Check section) and hydrostatically
tested (refer to Testing and Fault Isolation section), if required, before it is cleaned.

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A E R O S Y S T E M S CO.

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

CAUTION: THE MATERIALS USED TO CLEAN CYLINDERS AND REGULATORS CAN BE

HARMFUL TO THE EYES AND SKIN. WEAR EYE PROTECTION AND GLOVES
WHEN CLEANING CYLINDER ASSEMBLY PARTS.

(2) Use the following procedure to clean the interior of the cylinder:

(a) Prepare a solution of Kelite #28 liquid cleaner and water (1 part cleaner to 4 parts water).

(b) Fill the cylinder (240) 1/3 to 1/2 full with solution and agitate for 30 seconds.

(c) Pour out the solution and flush the cylinder (240) with flowing, hot (65°C, 150°F) water.

(d) Dry the cylinder (240) with a Galiso Model SCD-8 air dryer at 65°C (150°F) maximum for
three minutes or until the interior is completely dry.

(e) Inspect cylinder (240) interior with an inspection light to search for corrosion and cracks
and to verify all contaminants have been removed.

(3) Clean the outside surface of the cylinder (240) as follows:

(a) Remove all scale and caked point from the cylinder (240) exterior surface.

(b) Wipe the exterior surface with a clean, lint-free cloth moistened with Rho-Tri 135. Allow to
air dry.

Regulator and Fittings Cleaning (refer to IPL Figure 1).

(1) Clean all non-metallic regulator assembly (146) parts and the O-ring (195) by washing in a
fresh, hot (50°C, 120°F) solution of non-ionic detergent and water. Rinse parts in warm distilled
water, then blow dry using filtered, oil-free dry air.

(2) Clean all metal regulator assembly (146) parts with Rho-Tri 135 degreaser. Use an ultrasonic
cleaner or vapor degreaser, if available. Blow dry parts with filtered, oil-free dry air.

(3) Clean the plug (130), safety fitting (216), and burst disc (217) in Rho-Tri 135 degreaser.

(4) Clean the external surfaces of the low pressure outlets (80 or 90), gauge (50), and charge valve
(52) with Rho-Tri 135 degreaser. Do not allow the degreaser to enter the outlets nor to contact
the gauge lens, the charge valve cap inner seal, or the charge valve interior core.

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INSPECTION/CHECK

1. Check Equipment and Materials

A. The equipment and materials required for checking the cylinder assembly (1-1) are listed in Table
501.

Table 501. Check Equipment and Materials

Nomenclature Part or Spec. No. Source (CAGE)

Depth Gauge None Commercially Available

Inspection Light None Commercially Available

2. Check Procedures

A. Cylinder Check (refer to IPL Figure 1).

NOTE: Most of the cylinder damage assessment and checking criteria listed in this section were
obtained from a well-illustrated and comprehensive discussion of cylinder inspection
procedures presented in a pamphlet offered by the Compressed Gas Association (CGA).
The pamphlet is identified with the number CGA C-6, and is entitled "Standards for Visual
Inspection of Compressed Gas Cylinders." It is available for a nominal charge from the
Compressed Gas Association, Inc., Arlington, Virginia, CAGE 01701.

NOTE: The services of an approved FAA repair station should be utilized for cylinder inspection
and testing. Basic flaws and defects which could require rejection of the cylinder (240) are
presented below.

(1) Before inspecting the cylinder (240), clean any caked paint from the exterior surface, and all
scale from both the exterior and interior surfaces (see Cleaning section).

(2) Determine the most recent hydrostatic test date. The date will be stamped in the thicker metal
near the cylinder neck. The cylinder must be hydrostatically tested every five years.

(3) Check the cylinder (240) exterior for pitting and corrosion, especially line corrosion. If corrosion
is detected, have the cylinder inspected and tested by an FAA approved repair station.

(4) Check the cylinder (240) exterior for cuts, digs, gouges, and dents. Any defect of appreciable
depth is a stress raiser and should be closely examined.

(5) Check the exterior surface for evidence of localized burns and for fire damage.

(6) Check for bulges or other signs of structural damage which affect the cylinder (240) envelope
shape.

(7) Check the cylinder (240) neck for cracks, folds, and other flaws. Look for evidence of broken or
damaged threads, cross-threading, stripping, corrosion and wear. Verify the neck contains the
required number of effective threads.

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(8) Use an inspection light to inspect the cylinder (240) interior for corrosion and damage.

(9) Tap the outside of the cylinder (240) lightly with a hammer. The resultant sound should be a
clear ring. If a dull ring is heard, investigate the cylinder for corrosion.

Regulator Check (refer to IPL Figure 1).

(1) Inspect the pressure regulator body (198) threads for damage and contamination.

(2) Verify the regulator cap (155) is intact and is operating properly. Turn the regulator handle to
the ON and OFF positions and verify the detent ball (178) is seating correctly. The detent ball
will make a "click" sound as it seats.

(3) Verify the button (199) is present and stops the regulator cap (155) from turning beyond the ON
and OFF positions.

(4) Verify all warning, identification and indication decals are present.

(5) Test the regulator assembly (146) as outlined in Testing and Fault Isolation section. If the
regulator assembly satisfies the functional requirements, it is not necessary to disassemble the
regulator for further checks.

(6) If the regulator assembly (146) requires repair or overhaul, disassemble the unit according to
the directions in Disassembly section. Check the following items after the regulator is
disassembled:

(a) Examine the screw assembly (160). Replace the assembly if the nylon plug is worn or
deformed.

(b) Examine the ball (178). Replace if worn or corroded.

(c) Check the sharp pointed end of the diaphragm assembly (191) for deformation or wear.
Damage to this surface will greatly affect flow rates and outlet pressures, and could result
in damage to or leakage through the nozzle assembly (196).

(d) Check the O-ring (195) for distortion or cuts. Replace the O-ring if cut or damaged.

(e) Examine the nozzle assembly (196) sealing surface for wear, distortion, or embedded
contaminants. Replace if any embedded contaminants or leakage is observed.

(f) Verify all passages in the regulator body (198) are clear and open to flow.

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Fittings Check (refer to IPL Figure 1).

(1) Remove the safety fitting assembly (215) only if necessary due to damage, or to leakage as
determined from testing (see Testing and Fault Isolation section). Check the safety fitting (216)
and burst disc (217) surfaces for contamination, damage, and wear. Clean as required and
replace if worn or damaged. Always use a new washer (218) when the safety fitting assembly is
re-installed.

(2) Examine the outlets (80 or 90) for damage to the threads and to the bayonet connector
retention pins.

(3) Check the fill valve (52) for damaged threads. Verify the cap retention cord or chain is intact.
Examine the sealing surfaces on the fitting and on the cap plug for scratches and other
damage.

(4) Check the gauge (50) for case damage and for damaged threads. Verify the snubber is intact
and the surrounding receptacle is clean. Check the lens for scratches, cracks, and crazing. If
the lens needs replacement, see Repair section.

Straps and Masks.

(1) Examine the carrying strap (140) for cuts and fraying.

(2) Verify the clamp(s) (135) that hold the strap are tightened and undamaged or corroded.

(3) Examine the mask assemblies (25, 40) and their carrying bag (20) or protective bag (10) for
cuts or other damage. Examine the elastic retention bands or strips for damage.

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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

REPAIR

1. Repair Materials

A. The equipment and materials required for repair of the cylinder assembly (1-1) or its components are
listed in Table 601. Equivalent substitutes may be used for listed items.

Table 601. Repair Equipment and Materials

Nomenclature Part or Spec No. Source (CAGE)

Tool, Valve Core Removal 970522 Puritan (16827)

Paint, 5-gallon, Light Green 2008-14187 Cardinal Industrial Finish

El Monte, CA (65860)

Paint, 5-gallon, Dark Green 2651-3468 Sinclair Paint

Los Angeles, CA (97400)

Paint Thinner Rho-Solve 703 Rho-Chem Corporation

Inglewood, CA (21414)

Arbor Press None Commercially Available

2. Repair Procedures

A. Cylinder Repair (refer to IPL Figure 1).

(1) Cylinder (240) repair is limited to touch-up painting of minor abrasions, chipped paint, and cuts
or scratches. Refer to IPL Figure 1 to determine the paint color required for the cylinder.

(2) Any cylinder (240) with evidence of fire damage or with visible dents on the interior surface can-
not be repaired and must be condemned and removed from service.

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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

B. Regulator Repair (refer to IPL Figure 1).

(1) With one exception, regulator assembly (146) repair is limited to replacing decals or parts found
to be defective in Inspection/Check section.

(2) The only repairable part of the regulator assembly (146) is the regulator body assembly (197).
The indicator button (199) is force fit into the regulator body (198). On the rare occasions when
the button is knocked out of its hole, it can be pressed back into the hole using an arbor press.
Care must be taken to support the body under the hole in a manner that will avoid deforming
the regulator body (198).

C. Fittings Repair (refer to IPL Figure 1).

(1) A damaged gauge (50) lens can be replaced with Puritan PN 660104.

(2) A missing or damaged charge valve (52) cap assembly can be replaced with Puritan cap
assembly PN 270928-23.

(3) The valve core (56) of a leaking charge valve (52A) can be replaced using a valve core removal
tool. Refer to Table 801 for the very light installation torque requirement.

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• " T H ® ^ - PURITAN
^TAFL BENNETT.
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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

ASSEMBLY (INCLUDING STORAGE)

1. Assembly Equipment and Materials

A. The equipment and materials required for assembly are listed in Table 701. Equivalent substitutes
may be used for listed items.

Table 701. Assembly Equipment and Materials

Nomenclature Part or Spec No. Source (CAGE)

Pin Wrench 970522 Puritan (16827)

Lockwire 300900-20 Puritan (16827)

Teflon Tape No. 412 Permacel Division of

Johnson & Johnson
New Brunswick, NJ (99742)

Teflon Paste Formula-8 Fluoramics, Inc.

Upper Saddle River, NJ (28017)

Threadlocking Compound Loctite 242 Loctite Corporation

Newington, CT (05972)

Lubricant Krytox 240 Ax E.I. duPont deNemours

Wilmington, DE (23037)

Leak Detector Fluid . MIL-L-25567 Commercially Available

Type 1

2. Assembly Procedures

A. Regulator Assembly (refer to IPL Figure 1).

WARNING: DO NOT ASSEMBLE THE REGULATOR ASSEMBLY IN THE PRESENCE OF

HYDROCARBONS SUCH AS FUELS OR OILS. HYDROCARBONS CAN IGNITE
SPONTANEOUSLY IN THE PRESENCE OF PURE OXYGEN.

(1) Prepare the assembly area and regulator assembly (146) parts for assembly.

(a) Clean the assembly area of all contaminants, oils, and materials not required for
assembly.

(b) Clean all parts before assembly (refer to Cleaning section).

(c) Lay out the parts on the workbench in the relative positions shown in IPL Figure 1.

(d) Clean tools of all oils and contaminants.

(e) Use only lubricants and materials specified in Table 701.

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(2) Set regulator body (198) on workbench with female-threaded side up.

(3) Lightly lubricate the nozzle assembly (196) threads with Krytox and install into the regulator
body (198). Tighten to the torque specified in Table 801.

(4) Install the safety fitting assembly (215) into the regulator body (198).

(a) Hold the fitting (216) with the threaded end up.

(b) Lay the burst disc (217) dome side down on top of the fitting (216).

(c) Place the washer (218) on top of the burst disc (217).

(d) Pick up the regulator assembly (146). Position the safety port above the safety fitting
assembly (215) made in steps (a) through (c) above. Carefully screw the safety fitting
assembly into the safety port and tighten to the torque specified in Table 801.

(5) Apply Teflon tape to the pipe threads of the charge valve (52) and gauge (50). Screw the fittings
into the regulator assembly (146) ports (refer to IPL Figure 1 for the port that corresponds to
each fitting) and tighten to the torque values listed in Table 801.

(6) Test the nozzle assembly (196) for leakage using the procedure specified in Test and Fault
Isolation section.

(7) Lubricate the O-ring (195) sparingly and insert it into the groove in the raised ledge inside the
regulator body (198).

(8) Place the diaphragm assembly (191) with the pointed side down on top of the raised ledge.

(9) Orient the plate (190) with the larger diameter side down and set it on top of the diaphragm
assembly (191).

(10) Place the large spring (189) on top of the plate (190).

(11) Install the small spring (188) over the shaft that protrudes from the top of the diaphragm assem-
bly (191).

(12) Install the small end of the button (187) inside the end of the small spring (188).

(13) Place the washer (186) on top of the larger spring.

(14) Wrap the thread of the cap assembly (180) with Teflon tape, leaving the first thread free of tape.
Use a socket drive and the pin wrench, special tool (PN 970522), to turn the cap assembly fully
into the regulator body (198).

NOTE: The screw assembly (160) has a left-hand thread and must be turned counter-
clockwise to advance.

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(15) Insert the screw assembly (160) into the top of the cap assembly (180) and turn it in until it bot-
toms lightly.

(16) Apply a small amount of Krytox lubricant to the ball (178). Then, from the inner diameter of the
plate (175), insert the ball (178), button (177) with large end first, and detent spring (176) into
the smooth cavity in the plate. Hold them in position while the plate is slipped onto the top of the
cap assembly (180).

(17) Insert the setscrew (174) into the hole in the plate (175) that is located 180° opposite the detent
hole. Position the plate so the detent ball (178) is directly above the button on the front of the
regulator body assembly (197). Tighten the setscrew with an Allen wrench to the torque listed in
Table 801.

(18) Place a washer (172) on top of the cap assembly (180) and around the end of the screw
assembly (160). Place the spring washer (173), concave side up, and another washer (172) on
top of the first washer.

(19) As required, replace the bushing (171) into the groove inside the cap (155).

CAUTION: THE HANDLE AND SCREW ASSEMBLY HAVE MATCHING GROOVES/KNURLS.

GENTLY WIGGLE THE HANDLE ON THE END OF THE SCREW ASSEMBLY
WHEN MATING TO AVOID DESTROYING THE GROOVES/KNURLS.

(20) Carefully place the regulator cap (155) onto the grooved end of the screw assembly (160). Be
certain to position the handle with the word OFF immediately above the button that protrudes
from the regulator body assembly (197) and with the handle tang pressed against the button.

(21) Hold the regulator cap (155) down while installing the cap screw (170). Do not fully tighten the
cap screw until the regulator assembly (146) outlet pressure has been adjusted during testing.

(22) Test and adjust the regulator assembly (146) as specified in Test and Fault Isolation section.

B. Fittings Assembly (refer to IPL Figure 1).

(1) Apply Teflon tape to the pipe threads of the outlets (80, 90) and plug (130) (if used). Screw
them into the regulator assembly (146) ports (refer to IPL Figure 1 for the port that corresponds
to each outlet). Tighten to the torque values listed in Table 801.

C. Cylinder Assembly (refer to IPL Figure 1).

(1) Apply a moderate amount of Teflon paste to the regulator assembly (146) threads.

(2) Purge the cylinder (240) with a stream of oxygen to drive out any foreign matter and to enrich
the cylinder contents with oxygen.

(3) Screw the regulator assembly (146) into the neck of the cylinder (240) and tighten to the torque
listed in Table 801.

NOTE: On PN 176960-29, attach the mask assembly (40B) hose connector to outlet (90E).
Use lockwire (refer to Table 701) to safety the hose connector to the base of the
pressure gauge (50).

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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

RECORD OF REVISIONS

Retain this record in the front of the manual. On receipt of revisions, insert revised pages in manual. Enter
revision number, date issued, date inserted and initials.

REV. DATE DATE BY REV. DATE DATE BY

NO ISSUED INSERTED NO ISSUED INSERTED

1 JUL 1/95

2 FEB 28/98

OC OA Aft Page RR-1/RR-2

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A E R O S Y S T E M S CO.

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

(4) Replace the cylinder identification decal (235) and instruction decal (236) only if missing or illeg-
ible.

(5) Test the emergency oxygen portable assembly (1) as specified in Test and Fault Isolation
section.

Storage (refer to IPL Figure 1).

(1) Verify the regulator cap (155) is in the full OFF position.

(2) Charge the emergency oxygen portable assembly (1) to a minimum of 345 kPag (50 psig) with
oxygen prior to placing it in storage.

(3) Wrap the regulator assembly (146) in a polyethylene plastic bag to prevent dust accumulation.
Do not use preservative coatings of any type on any part of the cylinder assembly (1-1).

(4) For prolonged storage, wrap the entire emergency oxygen portable assembly (1) in a polyethyl-
ene plastic bag or place it in a cardboard container.

(5) Store the emergency oxygen portable assembly (1) in a clean, dry location.

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PURITAN
^TAM BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

FITS AND CLEARANCES

1. Torque Values (refer to IPL Figure

A. Torque values to be used for assembly of the emergency oxygen portable assembly (1) are listed in
Table 801.

Table 801. Assembly Torque Values

Torque Values*
Item N-m in-lbf

Nozzle Assembly (196) 20,3 to 23,7 180 to 210

Setscrew (174) 0,6 to 2,3 5 to 20

Safety Fitting Assembly (215) 8,1 to 8,8 72 to 78

Charge Valve (52) 4,5 to 16,9 40 to 150

Plug (130) 4,5 to 6,78 40 to 60

Outlet (80,90) 4,5 to 16,9 40 to 150

Pressure Gauge (50) 4,5 to 16,9 40 to 150

Regulator Body Assy (146) to 162 to 190 1440 to 1680

Cylinder (240), PN 176960-XX (120 to 140 ft-lbf)

Regulator Body Assy (146) to 88 to 102 780 to 900

Cylinder (240), PN 176961-11 (65 to 75 ft-lbf)

*First apply minimum torque. If leakage occurs, apply additional torque. Do not exceed maximum torque.

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^ T A BENNETT.
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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

SPECIAL TOOLS. FIXTURES AND EQUIPMENT

1. Special Tools and Fixtures

A. The special tools and fixtures required for maintenance of the emergency oxygen portable assembly
(1) are listed in Table 901. Equivalent substitutes may be used for listed items.

Table 901. Special Tools and Fixtures

Nomenclature Part or Spec No. Source (CAGE)

Pin Wrench 970522 Puritan (16827)

Galiso Corporation
Hydrostatic Test Machine Model MAK-3B-18
Montrose, CO (26220)

Yokogawa of America
Leak Detection Machine Type H-25
Newnan, GA (60336)

Galiso Corporation
Air Dryer Model SCD-8
Montrose, CO (26220)

B. The special tool manufactured by Puritan Bennett Aero Systems Co. is depicted in Figure 901. The
illustration is shown at exact scale and shows only the form of the tool so it can be readily identified.

Pin Wrench, PN 970522

Figure 901

O P O A A O Page901/902
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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

ILLUSTRATED PARTS LIST

» 1. Introduction

A. The Illustrated Parts List is intended for use in identifying, provisioning, storing and issuing
replacement parts for the Constant Flow, Emergency Oxygen Portable Assembly.

2. How to Use the Illustrated Parts List

A. When the part number is not known, refer to the Illustrated Parts List illustration and identify the part
by appearance. Note the index number of the part in the exploded view. Locate the index number in
the accompanying detailed parts list to find the part number, description and quantity required for the
application.

B. When the part number is known, look through the detailed parts list to locate the part number. The
figure number where the part appears and the index number of the part are listed in the column to
the left of the part number. Turn to the illustration and locate the index number to verify the part. The
detailed parts list also gives the description, assembly relationship, and quantity required for the
application.

C. Each assembly and subassembly in the detailed parts list is followed immediately by a listing of its
component parts, indented to show their relationship to the assembly and to each other. For a given
part, the number of indentures depicts the relationship of the item to the associated next higher
assembly as follows:

12 3 4
Assembly (RF) Number
Detail Parts for Assembly
. Subassembly
. . Detail Parts for Subassembly
. . Attaching Parts for Subassembly
. . Sub-Subassembly
. . . Detail Parts for Sub-Subassembly
. . . Attaching Parts for Sub-Subassembly

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COMPONENT MAINTENANCE MANUAL

176960-XX,176961-11

D. When two or more assemblies are listed in the same illustrated parts list, a code letter (A, B, C, etc.)
is assigned to each main assembly in the "EFF CODE" column. All subcomponents that are peculiar
to a particular assembly are identified by the same effectivity code letter as the main assembly. If
parts are common to all assemblies, the effectivity code column is left blank. The coding used in the
illustrated parts list is as follows:
«

ASSEMBLY PN EFF CODE

176960-03 A
176960-07 B
176960-08 C
176960-13 D
176960-14 E
176960-16 F
176960-26 G
176960-29 H
176960-38 J
176960-40 K
I 176961-11 L

E. Parts are listed in the detailed parts list in general order of disassembly, with the exception of
attaching parts. Attaching parts are captioned as such and follow immediately after the part they
attach. They are separated from other detail parts by the symbol " ***". Parts listed to maintain
breakdown generation only are so indicated by "RF" in "UNITS PER ASSY" column of the detailed
parts list.

F. Quantities specified in the "UNITS PER ASSY" column are the total number of each part required
per assembly or subassembly and are not necessarily the total used for the complete unit.

G. The detailed parts list does not list parts which lose their identity by being welded, riveted, or press fit
to other pieces, and items made from raw (bulk) stocks.

H. A dash (-) before an item number in the "FIG./ITEM" column indicates the item is not depicted on the
exploded view illustration.

I. In addition to the parts listed in the IPL, some components of vendor supplied parts, such as the
gauge lens and the charge valve cap, can be obtained as replacement parts from Puritan. Refer to
Repair section for the corresponding Puritan part number.

P
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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

3. Abbreviations

A. The abbreviations used in the Illustrated Parts List are as follows:

Abbreviation Meaning
AN Air Force-Navy Aeronautical Standard
ASSY Assembly
CONT Continuous
EFF Effectivity
FIG. Figure
MOD Modification
MS Military Standard
NO. Number
PB Puritan Bennett Aero Systems Co.
RF Reference
V Vendor (CAGE No.)

4. List of Vendors

The names, addresses, and vendor codes of vendors which supply parts for the cylinder assembly (1-1) are
listed in List of Vendors. The letters "PB" in the detailed parts list precede the Puritan Bennett Aero Systems
Co. part number which has been assigned to a vendor supplied item. Parts made by Puritan Bennett Aero
Systems Co. are not identified with a vendor code in the detailed parts list.

Vendor Code (CAGE) Vendor Name and Address

17875 Eaton Corp., Air Controls Div., Roxboro, North

Carolina
27204 Sabre Industries Inc., Burbank, California
70292 Sherwood Selpac Corporation, Lockport, New York
76599 Murray Corporation, Cockeysville, Maryland
88044 AN Specification
92114 Scott Div., Figgie International, Sierra Madre,
California
96906 MS Specification

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COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

THIS PAGE INTENTIONALLY LEFT BLANK

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176960-XX, 176961-11

230

135A

135A
OR
176960-08

240A
OR

/ 10
•25

t A *
176960-07

240B 15 20
40
40A
S. 40B
-40C

235- -236
REF
REF

90C
176960-13
176960-14
176960-16

240D

— 135A

135A 176960-26
176960-29
176960-38
176960-29 176960-40
176960-40 176961-11

Emergency Oxygen Portables, Exploded View

IPL Figure 1 (Sheet 1 of 2)

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COMPONENT MAI NTEN ANCE MAN UAL

176960-XX, 176961-11

FIG. & UNITS

ITEM PART NUMBER AIRLINE NOMENCLATURE EFF PER
NO. STOCK NO. 1 2 3 4 5 6 7 CODE ASSY
1-
-1 176960-03 EMERGENCY OXYGEN A RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (4.3 CU. FT.)
-1A 176960-07 EMERGENCY OXYGEN B RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (4.3 CU. FT.)
-1B 176960-08 EMERGENCY OXYGEN c RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (4.3 CU. FT.)
-1C 176960-13 EMERGENCY OXYGEN D RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (7.2 CU. FT.)
-1D 176960-14 EMERGENCY OXYGEN E RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (7.2 CU. FT.)
-1E 176960-16 EMERGENCY OXYGEN F RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (7.2 CU. FT.)
-1F 176960-26 EMERGENCY OXYGEN G RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (11.1 CU. FT.)
-1G 176960-29 EMERGENCY OXYGEN H RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (11.1 CU. FT.)
-1H 176960-38 EMERGENCY OXYGEN J RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (11.1 CU. FT.)
-1J 176960-40 EMERGENCY OXYGEN K RF
PORTABLE, CONSTANT FLOW,
AIRLINE TYPE (11.1 CU. FT.)
R -1K 176961-11 EMERGENCY OXYGEN L RF
PORTABLE, CONSTANT FLOW,
COMPOSITE (11 CU. FT.)
5 632053 • RUBBER BAND, .062 X .062 X 3 INCHES BJ 2
END TO END
10 830009-14 • BAG, POLYETHYLENE, BJ 1
6X 8 INCHES X 4 MIL
R 15 800026 • RING, NO. 3 LOOSELEAF, 1 INCH I.D., DEFHL 1
STEEL NICKEL PLATE
R 20 178009 • BAG,TOTE DEFHL 1
25 289-601-3 • MASK, CONTINUOUS FLOW BJ 1
(PB174289-03) (V92114)
R 40 174097-76 • MASK ASSY, CONT FLOW D 1
R 40A 174097-76 • MASK ASSY, CONT FLOW E 2
- Item Not Illustrated

p
35-30-09 pT
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BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

Emergency Oxygen Portables, Exploded View

IPL Figure 1 (Sheet 2 of 2)

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BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

FIG. & UNITS

ITEM PART NUMBER AIRLINE NOMENCLATURE! ,.HIA EFF PER
NO. STOCK NO. 1 2 3 4 5 6 7 ' >no ? CODE ASSY
1-
40B 174533 • MASK ASSY, CONT FLOW H 1
40C 174097-76 • MASK ASSY, CONT FLOW
-41 MS21964-20 • • CONNECTOR, BAYONET TYPE 1
(PB173720) (V96906)
-42 174516-02 • • MASK 1
R 50 171004 • GAUGE, PRESSURE, 2000PSI ,-i.r-^ i-. 1
v. ' A)
R -52 170036 • VALVE, CHARGE DEFL 1
52A 170149 • VALVE, CHARGE i. ABCG 1
C JO 3 HJK
R -54 270039 -
• • BODY ASSEMBLY rai J 7•
R -55 500037 • • • BODY 1
R -56 302-DV • • • VALVE CORE 1
(PB179000) (V17875)
-57 270040 i • • CAP ASSEMBLY 1
80 170086-24 • OUTLET, 4 LPM FLOW RATE i 2b c 1
-80A 170086-42 • OUTLET, 2 LPM FLOW RATE j BJ 1
-80 B 170086-62 • OUTLET, 2 LPM FLOW RATE •s-r >- K 1
-80C 170086-72 • OUTLET, 2 LPM FLOW RATE , c g ' ADEG 1
90 170086-44 • OUTLET, 4 LPM FLOW RATE BJ 1
-90A 170086-64 • OUTLET, 4 LPM FLOW RATE K
-90B 170086-74 • OUTLET, 4 LPM FLOW RATE erf ADEG 1
90C
90D
170088-72
170088-74
•
•
OUTLET, 2 LPM FLOW RATE
OUTLET, 4 LPM FLOW RATE
•o F
F
1
1
o
90E 170016 • OUTLET, 4 LPM FLOW RATE ; 9S.CC H 1
R -90F 170086-52 • OUTLET, 2 LPM FLOW RATE Gt ( ' L
130 AN932C2 • PLUG, .125 NPT l C 1
(PB500910) (V88044)
130A AN932C2 • PLUG, .125 NPT H 1
(PB500910) (V88044)
R 135 270063 • CLAMP, SCREW ADJUST, 3.56 IN DIA. ABDEF 1
STAINLESS STEEL GHJL
R 135A 270063 • CLAMP, SCREW ADJUST, 3.56 IN DIA. CK 2
STAINLESS STEEL
140 178005-01 V • STRAP ASSEMBLY n CK 1
R 140 A 178006 ' • • STRAP ASSEMBLY ABDEF 1
GHKL
146 172034-11 • REGULATOR ASSY BCJK 1
-146A 172034-41 • REGULATOR ASSY - • ADEFG 1
-146B 172034-71 • , REGULATOR ASSY • "
H 1
R -146C 172034-73 "V? REGULATOR ASSY | L 1
-150 172034-01 • • REGULATOR I 1
155 500273-02 • • CAP, GREEN 3 1
- Item Not Illustrated

Pa9e 008
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PURITAN
BENNETT.
P U R I T A N - B E N N E T T
A E R O S Y S T E M S CO.

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

FIG. & UNITS

ITEM PART NUMBER AIRLINE ! NOMENCLATURE EFF PER
NO. STOCK NO. 1 2 3 4 5 6 7 CODE ASSY
1-
160 800083 • • .VSCREW ASSY 1
165 MS51023-49 • • i SETSCREW, HEX SOCKET, 1
T PLAIN CUP POINT, .190-32 UNF-3A
THRD, ADDED STARTING SN ?
i , (PB800088) (V96906)
170 800080 • • CAP SCREW, BUTTON HD,. 12 SOCKET 1
j DRIVE, .198-32 UNF X .239 THRD
171 440166 • • BUSHING 1
172 ^00085 • • WASHER
173 (|16054 • • WASHER, SPRING, 1
.625 OD X .285 ID X .010 T X .085 HT
174 MS51023-49 • • SETSCREW, HEX SOCKET, PLAIN CUP 1
) POINT, .190-32UNF-3A THRD
j
(PB800088) (V96906)
175 440163 • • PLATE 1
176 816053 • • SPRING, DETENT 1
Ml 300025 • • BUTTON 1
178 MS 19060-19 • • BALL, CRES 440, DlA, .1562, RC 58-65 1
i (PB885012) (V96906)
179 862069 • • DECAL, ON/OFF 1
180 270219 • • CAP ASSEMBLY 1
186 800086 • • WASHER, NYLON, 1
1.185X.950X.015 INCHES
187 300026 • • BUTTON 1
188 816049 • • SPRING 1
189 816046 • • SPRING 1
190 440162 • • PLATE 1
191 270216 • • DIAPHRAGM ASSEMBLY 1
195 MS9068-022 • • O-RING, SILICONE, .989 ID X .07 DIA 1
(PB632006-22) (V96906)
196 270214 • • NOZZLE ASSEMBLY ABCDE 1
GJK
196A 270355 • • NOZZLE ASSEMBLY FHL 1
-197 270399-01 • • BODY ASSEMBLY 1
198 500388 • • BODY, REGULATOR 1
199 300023-03 • • BUTTON 1
200 862028 • • NAMEPLATE 1
201 862034 • • DECAL, WARNING 1
215 170916 • • SAFETY FITTING ASSY 1
WITH FRANGIBLE DISC
(REPLACES ITEMS 219, 220)
216 500477 • • • FITTING, BRASS . 1
217 800107 • • • DISC, BURST 2850 PSIG 1
- Item Not Illustrated

P
35-30-09 S
 H NELLCOR
PURITAN
H I BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

FIG. & UNITS

ITEM PART NUMBER AIRLINE NOMENCLATURE " EFF PER
NO. STOCK NO. 1 2 3 4 5 6 7 CODE ASSY
1-
218 660158' • • •
WASHER, TEFLON, 1
.310 X.187 X.005
-219 173018 • • SAFETY FITTING ASSY 1
-
WITH FRANGIBLE DISC
(REPLACED BY ITEM 215)
-220 170920 • • SAFETY FITTING ASSY BCFJK 1
WITH FUSIBLE PLUG
(OBSOLETED 12-12-90)
-221 9-6520-M • • • PLUG, FUSIBLE METAL, 1
165°F, .375-24UNF
(PB300022) (V70292)
-222 85-4863 • • • DISC, BURST 1
(PB300021) (V93064)
-223 800095 • • • WASHER, COPPER, .32 X .172 X..03 1
230 862051-01 • DECAL, HIGH FLOW ABDEF 1
GJK
231 862051-02 • DECAL, LOW FLOW ABDEF 1
GJK
235 862025 :- DECAL, IDENTIFICATION 1
235A 862098 • NAMEPLATE L 1
236 862027 • DECAL, INSTRUCTION 1
236A 862099 • DECAL, INSTRUCTION L
240 176001-04 • CYLINDER, 4.3 £U. FT. AC 1
LIGHT GREEN FINISH
240A 176002-04 • CYLINDER, 4.3 CU. FT. B 1
DARK GREEN FINISH
240B 176002-07 • CYLINDER, 7.2 CU. FT. DEF 1
DARK GREEN FINISH
240C 176001-11 • CYLINDER, 11 CU. FT. G 1
LIGHT GREEN FINISH
240D 176002-11 • CYLINDER, 11 CU. FT. JK 1
DARK GREEN FINISH
240E 176000-11 • CYLINDER, 11 CU. FT. H 1
DARK GREEN FINISH
240F 176700-11 • CYLINDER, 11 CU. FT. L 1
LIGHT GREEN FINISH
241 270436 • DUST PLUG ASSY L 3

- .Item Not Illustrated

Page 1010
35-30-09 Feb 28/98
 P ^ M NELLCOR
PURITAN
^ ^ m BENNETT.

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

RECORD OF TEMPORARY REVISIONS

REV. ISSUE DATE BY DATE BY REV. ISSUE DATE BY DATE BY

NO DATE INSRTD REMVD NO DATE INSRTD REMVD

Page RTR-1/RTR-2
35-30-09 Feb 28/98
 NELLCOR
PURITAN
BENNETT.
P U R I T A N - B E N N E T T

COMPONENT MAINTENANCE MANUAL

176960-XX, 176961-11

SERVICE BULLETIN LIST

SERVICE BULLETIN REVISION DATE BULLETIN

NUMBER NUMBER INCORPORATED INTO MANUAL

Of? f\/\ Page SBL-1/SBL-2

Feb 28/98