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B. Applicability:
This procedure is applicable to left engine and right engine
start valves.
C. References:
• GIV Master Minimum Equipment List, System 80
• GIV Airplane Flight Manual, Limitations, Section 01-80-10:
Starter Duty
• GIV QRH Section EC (Engines): Start Valve Failure
2. Procedure:
A. Tools and Equipment Needed:
Part Number: Nomenclature: Remarks:
N/A 3/8” wrench or
3/8” socket /
breaker bar
combination
Used to position manual
drive shaft.
DAVID CLARK
Part No. H3310
or Equivalent
Headset Used with external
communications cord
to establish communication
with cockpit
crewmember.
DAVID CLARK
Part No. C-31-**
(where ** is
length in feet) or
equivalent
Communication
Cord
Used with headset to
establish communication
with cockpit
crewmember.
NOTE: Do not use a ratchet for these procedures.
Continued on next page →
Quick Reference Handbook
REVISION 7 NORMAL PROCEDURES
May 30/02 Page NG -15
Engine Start - Manual Operation Of Start Valve, ctd… OM 09-03-40
B. Preparation:
When properly configured, the left and right engine start valves
are normally commanded open when the L ENG START / R
ENG START switches are depressed. This is confirmed by a
blue (HP RPM < 44.5%) or flashing amber (HP RPM
SVO icon displayed on EICAS adjacent to the respective HP
tachometer. If the start valve is confirmed as failed closed,
proceed as follows:
(1) Ensure airplane is safe for performing procedure.
(2) Assess situation. Section EC (Engines): Start Valve Failure.
C. Manual Operation of Start Valve (IGN and SVO Icons
Displayed During First Start Attempt): (See Figure 1)
CAUTION: DO NOT USE A RATCHET TO OPERATE VALVE.
USE A BREAKER BAR, APPROPRIATE SIZE EXTENSION AND
SOCKET TO OPERATE VALVE.
(1) Ensure all sources of air to bleed air manifold are removed.
(2) Ensure L ENG START / R ENG START switches are OFF.
(3) On appropriate engine cowl, open start valve access panel.
(4) Install socket, extension and breaker bar on start valve
manual wrenching feature.
NOTE: Manual wrenching feature is located with position
indicator switch on start valve.
(5) Rotate valve to OPEN and CLOSED indicated positions
several times. Note any resistance or binding (other than
normal 50 pounds spring tension). If binding is noted,
rotate valve to open and closed positions until valve travel
is smooth.
(6) Ensure valve is in CLOSED indicated position.
(7) Remove tools, check for presence of foreign objects then
close engine cowl start valve access panel.
(8) Clear area of personnel and foreign objects.
(9) Attempt normal engine start using QRH start procedure. If
engine will not start, perform Paragraph 2.D.
Continued on next page →
Quick Reference Handbook
NORMAL PROCEDURES REVISION 7
Page NG - 16 May 30/02
Engine Start - Manual Operation Of Start Valve, ctd… OM 09-03-40
D. Manual Opening and Closing of Start Valve: (See Figure 1)
WARNING: THIS PROCEDURE IS PERFORMED IN THE
VICINITY OF AN OPERATING AIRPLANE ENGINE. REMAIN
CLEAR OF ENGINE AIR INLET AT ALL TIMES. FAILURE TO
COMPLY CAN RESULT IN SERIOUS INJURY OR DEATH.
WARNING: EXTREME CARE MUST BE EXERCISED TO
GUARD AGAINST EMISSION OF HOT EXHAUST GAS FROM THE
STARTER WHEN MANUALLY OPENING OR CLOSING THE
START VALVE. USE A EXTENSION LONG ENOUGH TO ENSURE
A SAFE DISTANCE FROM STARTER VALVE EXHAUST.
CAUTION: DO NOT USE A RATCHET TO OPERATE START
VALVE. USE A BREAKER BAR, APPROPRIATE SIZE EXTENSION
AND SOCKET TO OPERATE VALVE.
CAUTION: CLOSE START VALVE AT OR BEFORE 40% HP
RPM. THE STARTER CAN OVERHEAT PAST 40% HP RPM.
CAUTION: DURING MANUAL OPERATION OF START VALVE,
BLEED AIR PRESSURE ENTERING THE VALVE WILL NOT BE
REGULATED.
CAUTION: CONTINUED USE OF THE STARTER IS LIMITED
TO THREE (3) CRANK CYCLES WITH A MAXIMUM OF THIRTY
(30) SECONDS PER CYCLE. DELAY THREE (3) MINUTES
BETWEEN START ATTEMPTS. AFTER THREE (3) CYCLES,
DELAY USE OF THE STARTER FOR AT LEAST FIFTEEN (15)
MINUTES.
CAUTION: APU BLEED AIR AND ENGINE START SWITCHES
MUST BE OFF FOR THIS PROCEDURE.
(1) Position one crewmember in cockpit to perform engine
start and direct opening and closing of valve.
(2) Establish communication between cockpit crewmember
and outside crewmember.
(3) Start opposite engine using normal AFM procedures.
(4) Select APU BLEED AIR off or shut down APU.
(5) Select both L ENG and R ENG BLEED AIR switches to
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湾流4快速检查单QRH GULFSTREAM IV QUICK REFERENCE HANDBOOK 1(23)
