Graco N22DH0, Инструкция-перечень запасных частей

Страница: 26 / 48

Repair
26 311238ZAM
Reassemble Air Motor
1. See F
IG
. 12. Install two backup packings (8*), and
then v-packing (7*) with the lips facing up. Then
install the retaining ring (9*) in the bottom cover (3).
Lubricate the packings. Install the bumper (59).
2. Install the o-ring (17*) on the piston (4). Ensure the
piston bumper (10) is in place.
3. Install the piston assembly on the bottom cover (3),
carefully sliding the adapter (A) and shaft (S)
through the packings.
4. Grease the inside of the cylinder (2). Place the cylin-
der (2) over the piston (4). Be careful not to damage
the o-ring (17*). Slowly work the o-ring into the
groove, compressing it until the cylinder slides over.
5. Carefully place the top cap on the cylinder (2) so the
flat edge aligns with the flat edge of the bottom
cover (3). Install the tie bolts (13) hand tight.
6. Using new gaskets (46), reinstall the valve assem-
bly with the top two air valve screws (41) and torque
to 20 ft-lb (27.1 N•m). Install the bottom two air
valve screws (41) tight to align the end caps (1) and
bottom cover (3). Then loosen the two bottom
screws (41).
7. Torque end cap tie bolts (13) evenly to 38-42 ft-lb
(51.3-56.7 N•m).
8. Retighten the bottom two air valve screws (41) and
torque to 20 ft-lb (27.1 N•m).
9. Reconnect the air motor to the lower (see your sep-
arate pump manual).
10. Reinstall the muffler (15). Fully tighten the screws
(43) against the muffler.
11. Reinstall the outer valve cover (47).
12. For motors with DataTrak or the linear sensor:
a. DataTrak Models: Carefully slide the housing
(132) onto the air valve. Thread the screws
(134) in by hand, then torque to 100 in-lb (11.3
N•m). Reattach the solenoid and sensor cables
to the DataTrak module (131), see page 14.
Carefully slide the module back into the housing
(132). Reinstall the two screws (135).
b. Linear Sensor Models: Reconnect the sensor
cable to the circuit board. See F
IG
. 15, page 28.
Carefully slide the housing (132) onto the air
valve. Thread the screws (134) in by hand, then
torque to 100 in-lb (11.3 N•m).
13. Reinstall the top cover (30).
14. Reconnect the air line to the motor.
Prior to series H air motors the u-cup (7) was
installed between the leather packings (8).
It is normal for the o-ring (17*) to seem too large.
It is normal for the o-ring (17*) to seem too large to
fit into the cylinder.
See Accessories , page 42, for a list of available
adapters to connect the NXT motor to various
Graco lowers.