Woodward 1907 User manual

Product Manual 45002
(Revision G)
Original Instructions
1907 Large Liquid Fuel Valve
Operation Manual

General
Precautions
Read this entire manual and all other publications pertaining to the work to be
performed before installing, operating, or servicing this equipment.
Practice all plant and safety instructions and precautions.
Failure to follow instructions can cause personal injury and/or property damage.
Revisions
This publication may have been revised or updated since this copy was produced.
To verify that you have the latest revision, check manual 26311 , Revision Status &
Distribution Restrictions of Woodward Technical Publications, on the publications
page of the Woodward website:
www.woodward.com/publications
The latest version of most publications is available on the publications page. If
your publication is not there, please contact your customer service representative
to get the latest copy.
Proper Use
Any unauthorized modifications to or use of this equipment outside its specified
mechanical, electrical, or other operating limits may cause personal injury and/or
property damage, including damage to the equipment. Any such unauthorized
modifications: (i) constitute "misuse" and/or "negligence" within the meaning of
the product warranty thereby excluding warranty coverage for any resulting
damage, and (ii) invalidate product certifications or listings.
Translated
Publications
If the cover of this publication states "Translation of the Original Instructions"
please note:
The original source of this publication may have been updated since this
translation was made. Be sure to check manual 26311 , Revision Status &
Distribution Restrictions of Woodward Technical Publications, to verify whether
this translation is up to date. Out-of-date translations are marked with . Always
compare with the original for technical specifications and for proper and safe
installation and operation procedures.
Revisions—Changes in this publication since the last revision are indicated by a black line
alongside the text.
Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is
believed to be correct and reliable. However, no responsibility is assumed by Woodward unless otherwise expressly
undertaken. Copyright © Woodward 1970
All Rights Reserved

Manual 45002 1907 Large Liquid Fuel Valve
Woodward i
Contents
WARNINGS AND NOTICES............................................................................ II
ELECTROSTATIC DISCHARGE AWARENESS ..................................................III
CHAPTER 1. GENERAL INFORMATION...........................................................1
Introduction.............................................................................................................1
Specifications .........................................................................................................1
CHAPTER 2. PRINCIPLES OF OPERATION .....................................................2
CHAPTER 3. MAINTENANCE.........................................................................5
Introduction.............................................................................................................5
Disassembly ...........................................................................................................5
Cleaning..................................................................................................................5
Inspection ...............................................................................................................6
Repair or Replacement...........................................................................................6
Lubrication ..............................................................................................................7
Assembly ................................................................................................................7
Leakage Check.......................................................................................................9
Orifice And Relief Valve Assembly.......................................................................10
CHAPTER 4. REPLACEMENT PARTS ...........................................................11
CHAPTER 5. SERVICE OPTIONS .................................................................18
Product Service Options.......................................................................................18
Woodward Factory Servicing Options ..................................................................19
Returning Equipment for Repair...........................................................................19
Replacement Parts ...............................................................................................20
Engineering Services............................................................................................20
How to Contact Woodward...................................................................................21
Technical Assistance............................................................................................21
Illustrations and Tables
Figure 2-1. Schematic Flow Diagram of Liquid Fuel Valve ....................................2
Figure 2-2. Schematic Flow Diagram of Liquid Fuel Valve with Orifice and Relief
Valve..................................................................................................4
Figure 3-1. Location of Scribe Mark for Alignment During Assembly.....................5
Figure 3-2. Metering Valve Bushing Insertion Tool ................................................8
Figure 3-3. Relationship of Metering Valve Port to Shoes for Installation of
Lever..................................................................................................9
Figure 3-4. Fuel Valve Leak Test Adapter..............................................................9
Figure 4-1. Fuel Valve Assembly .........................................................................13
Figure 4-2. Fuel Valve Assembly with Orifice and Relief Valve ...........................15
Figure 4-3. Outline Drawing of Liquid Fuel Valve.................................................16
Figure 4-4. Outline Drawing of Liquid Fuel Valve with Orifice, Relief Valve
Assembly, and TM-55 Actuator .......................................................17
Table 3-1. Spring Inspection Data..........................................................................6
Table 3-2. Wear Limits ...........................................................................................6

1907 Large Liquid Fuel Valve Manual 45002
ii Woodward
Warnings and Notices
Important Definitions
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
DANGER—Indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
WARNING—Indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION—Indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
NOTICE—Indicates a hazard that could result in property damage only
(including damage to the control).
IMPORTANT—Designates an operating tip or maintenance suggestion.
Overspeed /
Overtemperature /
Overpressure
The engine, turbine, or other type of prime mover should be
equipped with an overspeed shutdown device to protect against
runaway or damage to the prime mover with possible personal injury,
loss of life, or property damage.
The overspeed shutdown device must be totally independent of the
prime mover control system. An overtemperature or overpressure
shutdown device may also be needed for safety, as appropriate.
Personal Protective
Equipment
The products described in this publication may present risks that
could lead to personal injury, loss of life, or property damage. Always
wear the appropriate personal protective equipment (PPE) for the job
at hand. Equipment that should be considered includes but is not
limited to:
Eye Protection
Hearing Protection
Hard Hat
Gloves
Safety Boots
Respirator
Always read the proper Material Safety Data Sheet (MSDS) for any
working fluid(s) and comply with recommended safety equipment.
Start-up
Be prepared to make an emergency shutdown when starting the
engine, turbine, or other type of prime mover, to protect against
runaway or overspeed with possible personal injury, loss of life, or
property damage.
Automotive
Applications
On- and off-highway Mobile Applications: Unless Woodward's control
functions as the supervisory control, customer should install a
system totally independent of the prime mover control system that
monitors for supervisory control of engine (and takes appropriate
action if supervisory control is lost) to protect against loss of engine
control with possible personal injury, loss of life, or property damage.

Manual 45002 1907 Large Liquid Fuel Valve
Woodward iii
Battery Charging
Device
To prevent damage to a control system that uses an alternator or
battery-charging device, make sure the charging device is turned off
before disconnecting the battery from the system.
Electrostatic Discharge Awareness
Electrostatic
Precautions
Electronic controls contain static-sensitive parts. Observe the
following precautions to prevent damage to these parts:
Discharge body static before handling the control (with power to
the control turned off, contact a grounded surface and maintain
contact while handling the control).
Avoid all plastic, vinyl, and Styrofoam (except antistatic versions)
around printed circuit boards.
Do not touch the components or conductors on a printed circuit
board with your hands or with conductive devices.
To prevent damage to electronic components caused by improper
handling, read and observe the precautions in Woodward manual
82715, Guide for Handling and Protection of Electronic Controls,
Printed Circuit Boards, and Modules.
Follow these precautions when working with or near the control.
1. Avoid the build-up of static electricity on your body by not wearing clothing
made of synthetic materials. Wear cotton or cotton-blend materials as much
as possible because these do not store static electric charges as much as
synthetics.
2. Do not remove the printed circuit board (PCB) from the control cabinet
unless absolutely necessary. If you must remove the PCB from the control
cabinet, follow these precautions:
Do not touch any part of the PCB except the edges.
Do not touch the electrical conductors, the connectors, or the
components with conductive devices or with your hands.
When replacing a PCB, keep the new PCB in the plastic antistatic
protective bag it comes in until you are ready to install it. Immediately
after removing the old PCB from the control cabinet, place it in the
antistatic protective bag.

1907 Large Liquid Fuel Valve Manual 45002
iv Woodward

Manual 45002 1907 Large Liquid Fuel Valve
Woodward 1
Chapter 1.
General Information
Introduction
The 1907 large liquid fuel valve is normally used with a servo and acceleration
limiter assembly. The valve is the basic device for metering fuel to the gas
turbine. A differential pressure regulator incorporated in the fuel valve maintains
a constant pressure drop across the valve so that the fuel flow at a given position
of the fuel valve will always be constant. The fuel valve is available in various
ranges for different applications. The exact range of each fuel valve is selected to
meet the requirements of the installation. The port in the metering valve sleeve is
capable of metering fuel over a range of 30 to 1, with a maximum flow of 11 340
kg/h (25 000 lb/h). Under all operating conditions, there is a minimum fuel flow of
68 kg/h (150 lb/h) through the bleed-valve check ball seat.
Specifications
The description, requirements, and capabilities of the fuel valve are:
Fuel Type The valve is compatible with most types of diesels,
kerosenes, gasolines, heavy and light distillates
including naphtha, gas turbine fuels and fuel oils, and
other liquid fuels such as biodiesel that are compatible
with fluorocarbon (FKM) type elastomers and conform to
international standards for utility, marine, and aviation
gas turbine service. Ultra low sulfur diesels are also
acceptable with proper lubricity additives. Other fuels
such as ethanol or methanol may be acceptable with
internal seal compound substitutions. Contact
Woodward for these and other special fuel applications.
Fuel Viscosity Fuel viscosity must be between 0.5 and 12.0
centistokes.
Fuel Cleanliness Liquid fuel must be filtered to limit particulate size to 20
µm or smaller. Water content must be limited to 0.1% by
volume. Solids, sediment, and particulates must be
limited to 1.0 mg per liter of fuel.
Specific Gravity 0.77 to 0.91
Fuel Schedule (Nominal)
Maximum metered fuel flow 11 340 kg/h (25 000 lb/h)
Maximum bypass fuel flow 13 608 kg/h (30 000 lb/h)
Fuel Pressure:
Inlet (Maximum) 9377 kPa (1360 psig) w/ aluminum body
17 238 kPa (2500 psig) w/ stainless steel
body and class 10.9 (grade 8) bolts
Outlet (Maximum) 9032 kPa (1310 psig) w/ aluminum body
16 893 kPa (2450 psig) w/ stainless steel
body and class 10.9 (grade 8) bolts
Differential Pressure 345 to 827 kPa (50 to 120 psig)
Porting:
FUEL IN M533786-20
FUEL OUT MS33786-20
BYPASS M533786-20
Overboard Drain (O. B. DR.) MS33649-4
Flow Range 30 to 1

1907 Large Liquid Fuel Valve Manual 45002
2 Woodward
Chapter 2.
Principles of Operation
The liquid fuel valve meters fuel as a function of the angular position of its ported
metering sleeve. The metering sleeve is positioned by a servo and acceleration
limiter assembly or governor. See Figure 2-1 for a schematic diagram of the
liquid fuel valve.
Figure 2-1. Schematic Flow Diagram of Liquid Fuel Valve
The liquid fuel valve maintains a constant pressure drop across the fuel metering
ports in the metering sleeve. The fuel flow through the metering ports is
proportional to the area of the port opening, without regard to changes in
metered fuel discharge pressure. Fuel flow through the metering port is
described by the equation,
W
f= K1 a(ΔP)–1/2 where:
K
1= constant dependent upon fuel and port characteristics,
a = area of port opening,
ΔP = pressure drop across fuel valve (P1–P2)

Manual 45002 1907 Large Liquid Fuel Valve
Woodward 3
With ΔP held constant, accurate fuel metering is accomplished by controlling the
metering port opening.
Under operating conditions, fuel at inlet pressure (P1) flows to the metering
sleeve, one side of a bellows, to the bypass valve, and to an orifice. Metered fuel
at pressure (P2) is directed to the turbine and the opposite side of the bellows.
The bellows takes a position at which the sum of pressure P1, and the force of
spring S1acting on one side of the bellows, is equal to the sum of pressure P2
and the force of spring S2acting on the opposite side. When the balance of
forces has been established, the difference between the spring forces (S2–S1) is
equal to the difference between the pressures (P1–P2or ΔP). By varying the
force of spring S1, the ΔP can be adjusted to suit the requirements of a particular
application. The position of the bellows determines the position of the bleed-valve
check-ball, which then regulates the rate of fuel flow through the orifice. Pressure
Pr varies with the rate of fuel flow through the bleed valve, high flows resulting in
relatively lower pressures and low flows resulting in relatively higher pressures.
Pressure Pr plus the force of spring S3close the bypass valve piston. These are
opposed by pressure P1, which opens the bypass valve piston. The bypass valve
piston then takes a position at which pressure P1is equal to the sum of pressure
Pr and the force of spring S3. By varying the amount of fuel bypassed, pressure
P1is maintained at a constant differential above pressure P2, regardless of
variations in pressure P2or flow.
Opening the metering port to increase fuel flow to the turbine results in an
increase in pressure P2. This unbalances the forces across the bellows,
increases the force on spring S1and allows the bleed-valve check-ball to partially
close, reducing the rate of fuel flow through the bleed valve. With reduced fuel
flow, pressure Pr increases and results in an unbalance of the forces across the
bypass-valve piston. The piston moves to decrease the bypass flow and direct a
greater amount of fuel to the metering port. With more fuel being directed to the
metering port, pressure P1increases until the balance of forces across the
bypass valve piston and the bellows is established and further movement of the
piston or bellows is stopped.
Closing the metering port to decrease fuel flow to the turbine results in a
decrease in pressure P2. The resulting unbalance of forces across the bellows
forces the check ball further off its seat, and increases the rate of fuel flow
through the orifice. With the resulting decrease in pressure Pr, the unbalance in
forces across the bypass-valve piston causes the piston to move further open
and bypass a greater amount of fuel with less fuel directed to the metering port.
Pressure P1then decreases until the balance of forces across the piston and
bellows is established and further movement of the piston and bellows is
stopped.
The purpose of the orifice and relief valve (Figure 2-2) is to eliminate bypass
valve damping when a sudden increase in bypass flow is needed. The damping
is needed for ΔP stability in normal operation, and when change in inlet or
metered outlet flows are relatively small. Damping is provided by a restriction
between the bleed valve and bypass valve piston. When large decreases in
metered outlet flow or large increases in inlet flow occur rapidly, it is essential
that the bypass valve open immediately to prevent a transient rise in valve inlet
pressure. This transient rise would raise the pressure differential above the rating
of the ΔP sensing bellows. The damping restriction is provided by the orifice in
the relief valve plunger. If the pressure drop across this restriction exceeds 345
kPa (50 psi) when the bypass valve is moving in the open direction, the relief
valve opens to bypass flow around the damping restrictor. This allows the bypass
valve to open rapidly.

1907 Large Liquid Fuel Valve Manual 45002
4 Woodward
Figure 2-2. Schematic Flow Diagram of Liquid Fuel Valve with Orifice and Relief
Valve

Manual 45002 1907 Large Liquid Fuel Valve
Woodward 5
Chapter 3.
Maintenance
Introduction
Wear approved eye protection for safety. References to part numbers are shown
in brackets. Two-digit numbers refer to parts shown in Figure 4-1. Three-digit
numbers are shown in Figure 4-2. If common parts are used in both figures, both
sets of numbers will be used. Reference will be made to either Figure 4-1 or 4-2
if parts or procedures differ, and one set of reference numbers will be used.
Woodward recommends a yearly visual inspection of the bypass housing (3 or
122) and bypass sleeve (3 or 119) in the area where cavitation is expected due
to high differential fuel pressure. Cavitation will be more pronounced on valves
that are operated in high pressure applications or are in continuous service.
Remove the customer fuel piping from the ”Bypass” flange on the valve and
visually inspect the bypass sleeve and internal surfaces of the bypass housing
for cavitation and erosion wear. If significant wear is observed, replacement parts
can be procured from Woodward.
Disassembly
Refer to Figures 4-1 or 4-2 to disassemble the fuel valve.
1. Before removing the lever (15-158), make a mark on the shaft and lever for
use as an index during assembly (see Figure 3-1).
2. Follow the sequence of reference numbers for disassembly of the valve.
Discard all O-rings, seals, and cotter pins.
3. Do not scratch, drop, or abuse parts during disassembly.
Figure 3-1. Location of Scribe Mark for Alignment During Assembly
Cleaning
1. Soak and wash parts using a non-metallic brush to clean slots, holes, and
passages. Do not allow metering valve shoes (26-127) and metering valve
sleeve (29-166) to contact other parts and become damaged.
2. After parts are cleaned, coat them with a light film of lubricating oil.

1907 Large Liquid Fuel Valve Manual 45002
6 Woodward
Inspection
Visually inspect parts for damage or wear.
1. Inspect ball and needle bearings. Replace bearings if there is roughness,
scoring, or brinelling in balls, needles, or races.
2. Mating surfaces must not have nicks, scratches, burrs, or other damage.
3. Screws, plugs, and thread inserts must not be damaged.
4. Inspect thread surfaces and passages for dirt and corrosion.
5. Use Table 3-1 to measure springs for free length, squareness, and
compressed height when specified load is applied.
6. Use Table 3-2 to inspect parts for excessive wear. Replace worn part as
needed.
Repair or Replacement
Be careful when handling parts with precision edges and surfaces.
Sharp edges must be maintained.
Table 3-1. Spring Inspection Data
Ref.
No. Part Name Free Length Load Compressed Height
10
115 Bypass valve spring 64.01 (±0.76) mm
2.520 (±0.030) inches
66.7 N
15.0 lb
34.04 (±1.02) mm
1.340 (±0.040) inches
25
128 Valve loading spring 33.32 (±0.76) mm 1.312 (±0.030) inches
8.9–17.8 N *
2.0–4.0 lb *
20.62 (±0.25) mm
0.812 (±0.010) inches
45
142 Regulating valve spring 1.96 (±0.76) mm 0.077 (±0.030) inches
53.4 N
12.0 lb
14.73 (±0.13) mm
0.580 (±0.005) inches
147 Regulating valve spring 27.43 (±0.76) mm
1.080 (±0.030) inches
97.9 N
22.0 lb
17.63 (±0.13) mm
0.694 (± 0.005) inches
*—Do not exceed. Replace spring if value is exceeded for any reason.
Table 3-2. Wear Limits
Ref.
No. Part Name Where Measured Mfg. Tolerance Wear Limits
11
116 Bypass valve piston Land OD 22.207–22.215 mm
0.8743–0.8746 inch 0.069 mm max.
0.0027 inch max.
(clearance)
13
119 Bypass valve sleeve Land ID 22.238–22.250 mm 0.8755–0.8760 inch
48
144 Bellows Overall length
38.10–39.52 mm
1.500–1.556 inches
37.85–39.78 mm
1.490–1.566 inches
1. Use care when removing burrs from parts. Use a hard stone to remove
nicks and scratches.
2. Replace damaged thread inserts.

Manual 45002 1907 Large Liquid Fuel Valve
Woodward 7
3. If metering valve shoes (26-127) or metering valve sleeve (29-166) are
replaced, the shoes must be lapped to the exact contour of the sleeve using
an extra fine lapping compound. If there is not full contact between the shoe
and sleeve, there will be too much leakage.
Lubrication
1. Moving parts of this assembly are lubricated during operation by engine fuel.
At time of assembly, lubricate parts liberally with lubricating oil.
Assembly
See Figures 4-1 and 4-2 to assemble the fuel valve. The work area must be
clean, and parts free of nicks and scratches. Be sure:
Identification numbers on bearings face out.
Retaining rings are installed with the sharp edge in the direction of the
applied force.
O-rings are lubricated with white petroleum jelly. When installing O-rings
over threaded surfaces, tape the thread area or use the correct size sleeve
to prevent damage to the O-rings. Obtain new O-rings, seals, retaining
rings, and cotter pins to replace those discarded during disassembly.
Count the number of small parts such as screws, washers, and
retaining rings before proceeding with the assembly. During
assembly, the correct number of parts must be accounted for before
proceeding to the next assembly step. If the parts cannot be located,
disassemble the unit far enough to be sure the missing part has not
fallen into the internal cavity. Any parts in the assembly that are not
properly secured, may cause jamming and render the unit
inoperative.
1. Install ball bearing (30-153) on metering valve sleeve (29-166). Install one
O-ring spacer (31-152), one O-ring (32-162), and a second O-ring spacer
(31-152). Install metering valve sleeve (29-166) in valve housing (57-164).
Install retaining ring (28-167) in the ring groove.
2. See Figure 4-1. Install ball bearing (33) and lever spacer (19) on metering
valve sleeve (29). Place fuel valve lever (15) on the shaft. The lever will be
installed in the same position as received (refer to scribe marks put on at
disassembly). See Figure 4-2. Install spacers (152), O-ring (162), and ball
bearing (153) into valve housing (164) below the retaining ring groove.
Install retaining ring (154). Install pointer and spring retainer assembly
(154-155), spacers (152), spring (157) and lever (158).
3. Install O-rings (27-126) on metering valve shoes (26-127). Install valve
shoes (26-127) and loading springs (25-128). Place O-rings (24-129) on
metering cap (23-130) and install in valve housing (57-164), holding with
straps (22-131) and screws (20-111).

1907 Large Liquid Fuel Valve Manual 45002
8 Woodward
4. Install O-rings (55, 56-143, 149) on valve sleeve (54-148) and install in the
housing. Place white petroleum jelly on spring seat (52-146) to secure the
spring (53-147) and ball (51-145) to the spring seat. Install this assembly in
the valve. Place O-rings (49, 50-107, 143) on bellows assembly (48-144).
Place O-ring (47-118) on spacer (46-132). Install spring (45-142) in the
bellows. Install spring seat (44-141) and spacer (46-132). Install O-ring
(41-138) on valve cap assembly (40-137). Install O-ring (43-139) and pin
(42-140). Install valve clamp (37-1 36) with screws (35-135). Install adjusting
screw (38-134) in valve cap assembly (40-137).
5. See Figure 4-1. Install O-ring (14) on bypass valve sleeve (13). Install
bypass valve sleeve (13) into bypass valve housing (3) with the bypass port
of the sleeve matching the port on the bypass valve housing. Install sleeve
spacer (12) over the bypass valve sleeve (13). Install bypass piston (11) into
bypass valve sleeve (13) in the direction shown. Also install spring (10) on
top of bypass piston (11). Place O-ring (9) on the bypass valve cover (8)
and install in bypass housing (3), using the four screws (6) and washers (7).
See Figure 4-2. Install O-rings (118-120) on bypass valve sleeve (119).
Place O-ring (118) on the front of the bypass sleeve and install the sleeve
and bypass piston (116) in the bypass valve housing. Be sure the bypass
port on sleeve (119) matches the port on bypass housing (122). Install
bypass sleeve spacer (117) over the bypass sleeve.
Figure 3-2. Metering Valve Bushing Insertion Tool
Install O-ring (114) on bypass valve cover (112). The arrow on the bypass
cover points to the direction of bypass flow. Install the bypass cover and
bypass spring (115) using four screws (111). Some models use a copper
wave washer in place of the bypass sleeve spacer. If the valve uses an
orifice and relief valve plate assembly (101 through 109), the orifice cup
(113) is not used.

Manual 45002 1907 Large Liquid Fuel Valve
Woodward 9
6. The orifice and relief valve assembly (101 through 109) can be used on
either valve shown (Figure 4-1 or 4-2). If it is used on the valve in Figure
4-1, screws (1) must be replaced with screws (121). Assemble the orifice
and relief valve assembly as shown in the detail in Figure 4-2. Place the
orifice plate on valve housing (164) as shown. Install O-rings (102-123) on
bypass valve housing (122) and place the housing in position on the plate
assembly. Secure the assembly with four screws (121).
7. Be sure all parts are used or accounted for.
Figure 3-3. Relationship of Metering Valve Port to Shoes for Installation of Lever
Leakage Check
1. Locally manufacture three leak test adapters as shown in Figure 3-4.
Figure 3-4. Fuel Valve Leak Test Adapter
2. Install the adapters on the FUEL IN, BYPASS, and FUEL OUT pads using
three gaskets, six 1/4-28 by 7/8 inch-long screws, and six flat washers.
3. The test medium should be calibrating fluid (MIL-F-7024, Type 11).
4. Connect a suitable hand pump and 0–10 300 kPa (0–1500 psi) pressure
gauge to the adapter on the FUEL IN pad. Operate the hand pump and fill
the valve with fluid, allowing air to bleed from the valve through the open
fittings in the BYPASS and FUEL OUT adapters. When a clear stream of
fluid with no air bubbles flows from each of the fittings, cap off the fittings.

1907 Large Liquid Fuel Valve Manual 45002
10 Woodward
5. Increase pressure to 9653 kPa (1400 psig) and inspect the valve for leaks.
No leakage is permissible. If leakage occurs, disassemble the unit as
necessary and inspect for damage to sealing surfaces, presence of foreign
material, or damaged O-rings. Replace any damaged parts, assemble the
unit, and repeat the leak test.
Orifice And Relief Valve Assembly
For liquid fuel valves that do not have the orifice and relief valve assembly, see
Figure 4-1 or 4-2 and proceed as follows:
1. Press small orifice cup (113) out of bypass cover (112).
2. Assemble orifice (106) relief valve assembly (103, 104, 105, 107, 108) in
plate (101).
3. Position the relief valve assembly between the valve body assembly and the
bypass valve assembly. Be sure the O-rings are positioned correctly.
4. Use four screws (111) to fasten the three assemblies together.

Manual 45002 1907 Large Liquid Fuel Valve
Woodward 11
Chapter 4.
Replacement Parts
When ordering parts, give the following information:
The fuel valve type, serial number, and part number (shown on nameplate)
Manual number (this manual is 45002)
Part reference number given in parts list and part name or description
Figures 4-1 and 4-2 illustrate parts for the liquid fuel valve assembly. Reference
numbers are assigned in disassembly sequence.

1907 Large Liquid Fuel Valve Manual 45002
12 Woodward
Parts List for Figure 4-1
Ref. No. Part Name..............................Quantity
45002-1 Screw. 1/4-28 x 1................................ 4
45002-2 Washer, split lock ............................... 4
45002-3 Bypass valve housing......................... 1
45002-4 O-ring, 1.318 OD ................................ 1
45002-5 O-ring, 0.816 OD ................................ 1
45002-6 Screw, 10-24 X 5/8 (AN500-1 0-10) ... 4
45002-7 Washer, split lock, No.10 .................... 4
45002-8 Bypass valve cover............................. 1
45002-9 O-ring, 1.693 OD ................................ 1
45002-10 Bypass valve spring............................ 1
45002-11 Bypass valve sleeve ........................... 1
45002-12 Sleeve spacer..................................... 1
45002-13 Bypass valve sleeve ........................... 1
45002-14 O-ring, 1.505 OD ................................ 1
45002-15 Fuel valve lever .................................. 1
45002-16 Screw, 10-32 X 0.88 ........................... 1
45002-17 Locknut, hex, 10-32 ............................ 1
45002-18 Straight pin ......................................... 1
45002-19 Lever spacer....................................... 1
45002-20 Screw, 1/4-28 X 5/8 ............................ 4
45002-21 Washer, split lock, 0.263 ID ................ 4
45002-22 Metering valve strap ........................... 2
45002-23 Metering valve cap ............................. 2
45002-24 O-ring, 1.005 OD ................................ 2
45002-25 Valve loading spring ........................... 2
45002-26 Metering valve shoe ........................... 2
45002-27 O-ring, 0.754 OD ................................ 2
45002-28 Internal retaining ring.......................... 1
Ref. No. Part Name .............................Quantity
45002-29 Metering valve sleeve .........................1
45002-30 Ball bearing .........................................1
45002-31 Spacer.................................................2
45002-32 O-ring, 0.504 OD.................................1
45002-33 Ball bearing .........................................1
45002-34 Minimum flow plug ..............................1
45002-35 Screw, 1/4-28 X 5/8.............................2
45002-36 Washer, split lock, 0.263 ID.................2
45002-37 Regulating valve clamp .......................1
45002-38 Screw, 10-32 X 0.88............................1
45002-39 Hex nut, 10-32.....................................1
45002-40 Cap .....................................................1
45002-41 O-ring, 1.250 OD.................................1
45002-42 Straight pin ..........................................1
45002-43 O-ring, 0.379 OD.................................1
45002-44 Spring seat ..........................................1
45002-45 Regulating valve spring.......................1
45002-46 Spacer.................................................1
45002-47 O-ring, 1.187 OD.................................1
45002-48 Bellows................................................1
45002-49 O-ring, 0.941 OD.................................1
45002-50 O-ring, 0.629 OD.................................1
45002-51 Ball ......................................................1
45002-52 Spring seat ..........................................1
45002-53 Regulating valve spring.......................1
45002-54 Regulating valve sleeve ......................1
45002-55 O-ring, 1.004 OD.................................1
45002-56 O-ring, 0.941 OD.................................1
45002-57 Valve housing......................................1

Manual 45002 1907 Large Liquid Fuel Valve
Woodward 13
Figure 4-1. Fuel Valve Assembly

1907 Large Liquid Fuel Valve Manual 45002
14 Woodward
Parts List for Figure 4-2
Ref. No. Part Name..............................Quantity
45002-101 Check valve plate ............................... 1
45002-102 O-ring - 1.112 lb x 0.103 ..................... 2
45002-103 Retaining ring 0.346 dia...................... 1
45002-104 Spring seat ......................................... 1
45002-105 Check valve spring ............................. 1
45002-106 Check valve orifice ............................. 1
45002-107 O-ring - 0.489 ID x 0.070 .................... 2
45002-108 Check valve bushing .......................... 1
45002-109 O-ring - 0.739 x 0.070......................... 1
45002-110 Washer 0.250 ..................................... 8
45002-111 Screw 0.250-28 x 0.750...................... 4
45002-112 Bypass valve cover............................. 1
45002-113 Orifice cup .029 dia............................. 1
45002-114 O-ring - 1.362 ID x 0.103 .................... 1
45002-115 Bypass spring ..................................... 1
45002-116 Bypass valve piston............................ 1
45002-117 Bypass valve sleeve spacer ............... 1
45002-118 O-ring - 1.051 ID x 0.70 ...................... 2
45002-119 Bypass valve sleeve ........................... 1
45002-120 O-ring - 1.299 ID x 0.103 .................... 1
45002-121 Screw 0.250-28 x 2.000...................... 4
45002-122 Bypass valve housing......................... 1
45002-123 O-ring - 0.676 ID x 0.070 .................... 2
45002-124 Nameplate .......................................... 1
45002-125 Drive screw #2 x 0.125 ....................... 5
45002-126 O-ring - 0.614 ID x 0.070 .................... 2
45002-127 Metering valve shoe ........................... 2
45002-128 Valve sleeve loading spring ................ 2
45002-129 O-ring - 0.799 ID x 0.103 .................... 2
45002-130 Metering cap....................................... 2
45002-131 Metering valve strap ........................... 2
45002-132 Spacer ................................................ 1
45002-133 Hex nut 10-32 ..................................... 1
Ref. No. Part Name .............................Quantity
45002-134 Screw 10-32 x 0.625 ...........................1
45002-135 Screw 0.250-28 x 0.875 ......................2
45002-136 Valve clamp
.........................................1
45002-137 Valve cap ............................................1
45002-138 O-ring - 1.049 ID x 0.103.....................1
45002-139 O-ring - 0.239 ID x 0.070.....................1
45002-140 Straight pin 0.247 x 0.500 ...................1
45002-141 Spring seat ..........................................1
45002-142 Spring..................................................1
45002-143 O-ring 0.801 ID x 0.070.......................2
45002-144 Bellows................................................1
45002-145 Ball 0.156 ............................................1
45002-146 Spring seat ..........................................1
45002-147 Spring..................................................1
45002-148 Sleeve .................................................1
45002-149 O-ring 0.864 ID 0.070..........................1
45002-150 Valve angle dial...................................1
45002-151 Drive screw .........................................2
45002-152 O-ring spacer ......................................2
45002-153 Bearing................................................2
45002-154 Retaining ring 0.338 ............................1
45002-155 Valve angle pointer .............................1
45002-156 Spring retainer.....................................1
45002-157 Motor spring ........................................1
45002-158 Lever assembly ...................................1
45002-159 Screw 8-32 x 1.000 .............................1
45002-160 Screw 8-32 x 0.750 .............................2
45002-161 Pin .2515 x 1.250 ................................1
45002-162 O-ring - 0.364 ID x 0.070.....................2
45002-163 Dowel pin 0.188 x 0.688......................1
45002-164 Valve housing......................................1
45002-165 Flow plug.............................................1
45002-166 Valve sleeve........................................1
45002-167 Retaining ring ......................................1