Testing The Fuel Shut Off Solenoid; Disassembly And Assembly Of Ipg Solenoid Valve; Testing And Pairing Vaporizer/Regulator - Generac Power Systems GTH760 Service Manual

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TeSTING THe Fuel SHuT-oFF SoleNoId
1. Remove the spark plug wires from each spark plug to
prevent accidental starting of the engine.
2. Check for 12 volts DC at the solenoid terminal.
See Figure 3-11.
a. Place one hand on the fuel solenoid and turn the ignition
switch to the run position. You should be able to feel the
solenoid actuate as well as hear an audible click. Replace
the solenoid if it does not actuate.
3. I f t h e s o l e n o i d i s o p e n i n g p ro p e r l y, p ro -
c e e d
t o
" T E S T I N G
VAPORIZER/REGULATOR".
4. Reconnect the spark plug leads when finished
12 VOLT WIRE
Figure 3-11. LPG Solenoid Valve
dISASSeMblY ANd ASSeMblY oF
lPG SoleNoId vAlve
If the solenoid valve is removed for cleaning or replacing
the filter, it is recommended that the special synthetic sealing
gaskets be replaced. When installing new sealing gaskets,
they should be lubricated using an O-ring lubricant. do NoT
re-uSe o-rINGS!
For improving the functional features and lifetime of the sole-
noid, it is recommend that the gaskets and filter be replaced
after about two years of operation.
A N D
R E PA I R I N G
L P G
3-5
SeCTIoN 3: CArbureTIoN ANd Fuel SYSTeM
COIL BOLT
COIL SPOOL
RESEVOIR BOLT
Figure 3-12. LPG Solenoid Valve Torque and
Lubrication Points
NOTE: For correct solenoid valve fitting, it is essential
that the following torque values be observed:
1
Coil Bolt
2
Reservoir Bolt
3
Coil Spool:
TeSTING ANd rePAIrING lPG
vAPorIzer/reGulATor
SPECIAL EQUIPMENT REQUIRED:
1. Air pressure at 100 psi, and air pressure gauge 0-15 psi,
with connecting hose and fittings to attach to the 1/8"
NPT female pipe connection.
2. Liquid leak detector to check for leaks (recommended).
REPAIR KIT CONTENTS:
(Refer to Parts Manual for specific part numbers.)
Pin, Pivot, Secondary Reg Lever
Lever, Assembly Reg Secondary
Diaphragm, secondary
Assembly. Diaphragm, primary
Assembly, Lever, Primary
Pin, Pivot, Primary
SEALING GASKET
SEALING GASKET
SEALING GASKET
SEALING GASKET
7.85 Nm (70 in. lbs.)
11.8 Nm (104 in. lbs.)
16.6 Nm (147 in. lbs.)
3

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