Bleeding The Fuel System - Westerbeke 8.0 KW-60Hz SBEG Operator's Manual

FUEL SYSTEM
BLEEDING THE FUEL SYSTEM
1. Insure that the fuel cell
is
not
connected to the wiring
harness, and that the lift pump
is
connected.
2. Attach Snap On MT337B, OTC
nIl
or equivalent fuel
pressure gauge set to the Schrader valve on fuel cell.
A
CAUTION:
Follow manufacturer's instructions for
safe use of the gauge SlIts to purge a high·pressure fuel
system.
3. While holding the stop switch in the (prime) depressed
position, purge the air from the fuel cell. The fuel cell is
purged when no air bubbles are visible escaping from the
drain line attached to the Schrader valve. Pressure should
typically be 3-4 psi.
4. Remove the pressure gauge set from the fuel cell and
connect it to the Schrader valve on the throttle body.
5. Connect the fuel cell to the wiring harness.
6. Open the valve on the fuel pressure gauge purge line. Do
not prime the system without the fuel gauge purge valve
open or air can be forced back into the fuel cell. If this
happens, repeat steps I, 2, and 3 to remove the trapped
air from the fuel cell.
7. Repeat step 3, this time purging the air completely from
the throttle body. The pressure should be 40 psi in the
. throttle body after purging the system.
IoTE:
The system can develop 40 psi without being fully
purged. The system is fully purged when no bubbles are TO
visible in the purge line. .
VALVE.
ADAPTER
KIT
FUEL CELL
INCOMING FUEL
12A
"SNAP-ON-TOOL" PROVIDES AN
EXCELLENT PRESSURE GAUGE KIT
FOR PRESSURE TESTING AND
BLEEDING SCHRADER TEST PORTS
8. Remove the pressure gauge set, and cap all Schrader
valves.
9. Insure that all wire connections are secure and that there
are no leaks in the fuel system.
A
WARNING:
Take care to catch any
fuel that may be spilled and properly
dispose of the , __ ,
'.11.'
-".!r-----.".,
COOLER
FILTER
..t:~+--+--- FUEL PUMP
\\j':_+-tL---INLET FUEL FILTER