Piper Navajo PA-31 Service Manual page 343

PIPER NAVAJO SERVICE MANUAL
6-79. ASSEMBLY OF HAND PUMP RELIEF VALVE. (Refer to Figure 6-18, item 51.)
a.
Lubricate and install "O" ring (58) into the body (67).
b.
Inspect the seating surface of the seat (57). Seating edge has to be sharp, lap
if necessary to
obtain a clean, sharp edge.
c. Drop ball (56) into the cavity of the hand pump relief valve body (55) and install
seat (57) into
the body (55), trapping the ball between the two parts.
d. Lubricate threads and install assembly into the body (67). Torque to 70 inch-pounds.
e. Insert the stem (54) and the spring (53) into the valve body (55) and install adjusting
screw (52).
The adjusting screw provides adjustment for the hand pump relief valve. Install flush
at this time.
6-80. ASSEMBLY OF HAND PUMP SUCTION SCREEN. (Refer to Figure 6-18, item
48.)
a.
Install the filter (50) into the body (67) and secure with snap ring (49).
6-81. ASSEMBLY OF RESERVOIR. (Refer to Figure 6-81.)
a. Install center stud (41) into body (67). Torque to 45 inch pounds.
b. Lubricate "O" ring (47) and "O" ring (104) and install on reservoir (46).
c.
Push reservoir (46) into body (67).
d.
Drop baffle plate (45) into reservoir (46) and secure by placing snap ring (44) onto center stud (41).
e.
Slide deflector plate (107) over center stud (41).
f.
Lubricate "O" ring (40) and install onto center stud (41).
6-82. ASSEMBLY OF MANIFOLD. (Refer to Figure 6-19.)
a. Lubricate and install the "O" ring (20) on the landing gear selector spool (19), and
the "O" ring
(18) into the manifold (35) at the opposite end.
NOTE
The landing gear selector spool, time delay valve plunger and
manifold are matched, lapped parts. If necessary to replace,
replace as an assembly only.
b. Insert the selector spool (19) into the manifold (35) from the landing gear handle
end of the
manifold. Insert only until the taper of the selector spool is protruding out
the manifold end,
approximately .06 inches.
CAUTION
If the selector spool is not protruding .06 inches out of the
manifold opposite the rack when installing into the body (67) (see
Figure 6-18), the gear will not be engaged in its proper position.
Also, do not move the selector spool more than .12 inches out of
the manifold opposite the rack. "O" ring (18) could be caught and
damaged, and would have to be replaced by a new "O" ring (18).
c. Check that the landing gear selector spool (17) slides freely.
d.
Inspect the door solenoid spool (10) for freedom of movement within the transfer valve
sleeve (7).
NOTE
The spool (10) and the transfer valve sleeve (7) are matched, lapped
parts. If necessary to replace, replace as an assembly only.
Revised: 10/12/83
HYDRAULIC SYSTEM
Effectivity
WIEBEL
2C13