Service; Manifold Repair; Ball Valve Repair - Graco 24H002 A Series Instructions-Parts List Manual

Service

Manifold Repair

NOTE: Repair kits are available for the manifold. Parts
included in the kits are indicated with a †, for example
(9†) See page 11.
1. Perform the Pressure Relief Procedure on page 7.
2. Remove the twelve socket-head screws (2) to sepa-
rate the two valve housings (8) from the manifold
housing (7). Remove all parts from the housings.
3. Clean all parts thoroughly in a compatible solvent.
Use a soft bristle brush to clean the manifold pas-
sageways.
4. Install the two check valve assemblies (9†) and
valve seats (6†) in the manifold housing (7).
5. Install the needle valve (12), back-up ring (4**), and
seal (3†) in each of the valve housings (8).
6. Install six socket-head screws (2) through one valve
housing (8) and into the manifold housing (7), so the
distance between the housings is 0.060 in. (1.5
mm).
7. Tighten the needle valve slightly, so that the tapered
end centers in the seat (6) and holds its position.
8. Turn the six socket screws (2) oppositely and evenly
to 60–70 in-lbs (6.7–7.9 N•m). Back off the needle
valve (12) slightly.
9. Repeat step 8 as the torque will relax.
Be sure to tighten the six socket screws (2) evenly.
The upper four screws, which surround the needle
valve assembly (12), are critical in ensuring that the
needle seats properly. If the bottom two screws are
over-tightened, they will throw off the alignment.
10. Repeat the procedure from step 9 on the other valve
housing (8).
307400R
NOTICE

Ball Valve Repair

NOTE: Repair Kit 217560 is available for the ball valves.
Parts included in the kit are indicated with an asterisk,
for example (18*). See page 11.
When reassembling a ball valve (13 or 24), install the
ball (18* or 29*) so that the round hole aligns with the
main passageway of the valve body and the square hole
aligns with the stem (21 or 32) passageway.
Service
9