Piper SENECA II - Page 342

PIPER SENECA II SERVICE MANUAL
VI - HYDRAULIC SYSTEM 01/01/09
1I14B
6-10a. HYDRAULIC PUMP (SERVICE REPLACEMENT - OILDYNE) (Refer to Figure 6-5a.)
W
ARNING:FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S) WHEN
SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER
AIRCRAFT MAY RENDER THE AIRCRAFT UNAIRWORTHY. (SEE
INTRODUCTION - SUPPLEMENTARY PUBLICATIONS.)
a. In Aircraft.
The Oildyne hydraulic pump with reservoir incorporated is located in the nose section of the
fuselage. Access to the pump is through the access panel in the nose baggage compartment.
1. Removal.
a. Remove the ABS nose gear cover.
b. Remove anti-splash cover (P/N 96374-0) by removing the four attaching screws.
c. Disconnect the three knife connectors that attach the black, blue, and green forward and
reverse harness wires.
d. Disconnect and plug the “up” and “down” pressure hydraulic lines from pump mount.
Cap the lines.
e. Remove the three each mounting bolts and washers securing pump mount to deck.
f. Lift assembly from airplane.
2. Installation.
a. Position assembled pump, bracket, and pump mount on pump deck in airplane.
b. Secure pump assembly to deck by installing the three AN3-10 bolts with one MS35489-64
washer under each bolt head and three No. 5712-45 (P/N 494-192) washers between Piper
mount assembly and pump deck.
NO
TE: Before positioning the complete hydraulic pump assembly on the mounting
bracket, ensure that the cushion pad is secured in place on the reservoir base.
c. Install the “up” and “down” pressure hydraulic lines to pump mount.
d. Connect the three knife connectors that attach the black, blue, and green forward and
reverse harness wires.
e. Install anti-splash cover (P/N 96374-0) by installing the four attaching screws.
f. Install the ABS nose gear cover.
b. Field Service.
Field service of Oildyne hydraulic pump is limited to motor replacement and removal, inspection,
cleaning, and replacement of the hydraulic fluid reservoir. Should the pump/adapter assembly
malfunction, either replace pump, or return pump to Piper, via the local Piper distributor, for
servicing or repairs.