Installation Of Prestolite Hydraulic Pump - Piper Cherokee SIX 300 Service Manual

PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
10. Connect the blue lead from the pump motor to the positive terminal of the power supply. With
a high pressure indication on the pressure gauge, the ammeter should read 75 amperes
maximum. Disconnect the blue lead.
11. Connect the green lead from the pump motor to the positive terminal of the power supply. With
low pressure indication within the 500 to 800 psi range, the ammeter should read between 15
to 35 amperes.
NOTE: In the event any of the various tests do not perform satisfactorily, the pump assembly
should be replaced.
12. Disconnect the green lead from the power supply and permit the pressure to drop before
disconnecting the hydraulic lines.
5A-10. INSTALLATION OF PRESTOLITE HYDRAULIC PUMP. (Refer to Figure 5A-3.)
a. Insert grommet (22) in pump base mounting hole.
b. Insert bushing (20) in grommet (22).
c. Place washer (21) over bolt (19) and insert bolt through grommet (22) and bushing (20) and pump
base (16).
d. Place washer (23) and bushing (24) over bolt (19) and secure to mounting shelf (25).
e. Connect hydraulic lines to pump.
f. Connect pump electrical leads. Blue wire to outboard (lower) solenoid, green wire in inboard
(upper) solenoid, and black wire to ground on battery shelf.
g. Check fluid level in pump. Refer to Section II for filling instructions.
h. With airplane on jacks, operate pump to purge hydraulic system of air, and check for leaks. After
operation, recheck fluid level.
07/15/06
1J11
VA - HYDRAULIC SYSTEM