Graco 273319, Руководство пользователя

Страница: 6 / 14

Repair
6 3A9013A
• If the assembly separates at joint A:
a. Hold the cylinder (8) flats with a wrench and
unscrew the intake housing (16).
b. For Dura-Flo 900 and 1200 Lowers: Using a
rubber mallet, drive the rod (1) and piston
assembly out of the outlet housing (7) and
cylinder (8) until the piston comes free. Pull the
rod and piston from the cylinder, being careful
not to scratch the parts.
c. For Dura-Flo 600 and 750 Lowers: Turn the
cylinder (8) upside down and strike the top of
the rod (1) on a plastic or wooden block until the
piston comes free. Pull the rod and piston from
the cylinder, being careful not to scratch the
parts. See the Detail in F
IG
. 1.
d. Using a wrench on the cylinder (8) flats,
unscrew the cylinder from the outlet housing (7).
Remove the cylinder seals (24). Shine a light
into the cylinder to inspect the inner surface for
scoring or wear. Now go to step 6.
• If the assembly separates at joint B:
a. Unscrew the cylinder (8) and intake housing
(16) from the outlet housing (7). Carefully pull
the cylinder and intake housing straight out of
the outlet housing. The displacement rod (1)
and piston assembly will come out with these
parts.
b. Place the intake housing (16) in a vise. Using a
wrench on the cylinder (8) flats, unscrew the
cylinder. The rod (1) and piston assembly will
remain in the cylinder.
c. For Dura-Flo 900 and 1200 Lowers: Using a
rubber mallet, drive the rod (1) and piston
assembly out of the outlet housing (7) and
cylinder (8) until the piston comes free. Pull the
rod and piston from the cylinder, being careful
not to scratch the parts.
.
d. Remove the cylinder seals (24). Shine a light
into the cylinder to inspect the inner surface for
scoring or wear. Now go to step 6.
6. Place the piston flats (15) in a vise. See F
IG
. 2.
7. Unscrew the piston ball guide (9) from the piston.
Be careful to catch the piston ball (10) as you
separate the parts, so it does not fall and suffer
damage.
8. Examine the displacement rod (1) for scratches and
other damage. Only if the rod needs replacement,
unscrew it from the piston ball guide (9), using a
wrench on the flats of the rod.
9. Remove the piston glands and v-packings (P).
Inspect the ball (10), seat (E), and guides (F) on the
ball guide for wear or damage.
10. See F
IG
. 4. Unscrew the packing nut (2). Remove
the throat packings (T) from the outlet housing (7).
11. Clean all parts with a compatible solvent and
inspect them for wear or damage.