Table of Contents
Advertisement
PIPER CHEROKEE WARRIOR SERVICE MANUAL
e. Place a container below the open end of the test line to catch any fuel during the adjustment of the
pump.
f.
Turn the fuel selector ON, open the by-pass valve on the test line, and turn the FUEL PUMP
switch ON.
g. When a steady flow of fuel is obtained, close the by-pass valve and check the reading on the test
pressure gauge. It should read 4 to 4.75 psi maximum, no flow. Do not keep by-pass valve closed for more
than one minute during pump operation and adjustment.
h. Place the fuel selector in the OFF position, and turn the FUEL PUMP switch OFF.
i.
If the proper pressure was not obtained, replace plunger spring, and repeat steps f, g, and h.
j.
If a new plunger spring does not correct the problem, replace the complete pump assembly.
Repeat steps f, g, and h.
k. Disconnect test lines from the fuel pump.
l.
Connect the airplanes fuel line to the pump. Open fuel selector and run the pump to check for any
fuel leaks.
m. Shut off the pump, close the fuel selector, and secure the engine cowl.
9-35.
INSTALLATION OF FUEL PUMP.
To install the fuel pump:
1. Position the fuel pump to the engine mount frame and secure with bolts, washers and nuts.
2. Connect the fuel lines to the pump.
3. Connect the electrical leads to the pump.
4. Turn the fuel shutoff on and operate the fuel pump. Check all fuel line fittings for leakage.
5. Install the cowling.
9-36.
ENGINE PRIMER PUMP.
9-37.
REMOVAL OF ENGINE PRIMER. (Refer to Figure 9-11.)
a. Disconnect the fuel lines from the primer behind the instrument panel.
b. Loosen the locknut (12) from behind the panel.
c. Unscrew the knurled face nut (10), and withdraw the pump handle (9) and piston (7) from the
cylinder (5).
d. Remove the remaining portion of the primer.
Revised: February 28, 1995
Figure 9-11. Engine Primer
2B6
Island Enterprises
FUEL SYSTEM
Advertisement
Chapters
Table of Contents
Troubleshooting
