Graco 253485 Instructions-Parts List

16 308441
Service
03270
Fig. 8
17 16
11
10
12
15
1
2
Insert narrow end first.
Grease.
3
Install with lips facing
narrow end of piston (11).
4
Insert wide end first.
1
2
3
4
2
03271
1
2
8
9
3
Rounded side must face down
(aluminum center housing mod-
els only).
Tighten screws until
they bottom out on the
housing.
Fig. 9
1
2
Reassembly
1. If you removed the bearings (12, 15), install new
ones as explained on page 22. Reassemble the
fluid section.
2. On aluminum center housing models, install the
valve plate seal (9) into the groove at the bot-
tom of the valve cavity. The rounded side of the
seal must face down into the groove. See Fig. 9.
3. Install the valve plate (8) in the cavity. On alumi-
num center housing models, the plate is reversible,
so either side can face up. Install the three screws
(3), using a Torx (T20) screwdriver or 7 mm (9/32
in.) socket wrench. Tighten until the screws bottom
out on the housing. See Fig. 9.
4. Install an o-ring (17) on each pilot pin (16).
Grease the pins and o-rings. Insert the pins into
the bearings (15), narrow end first. See Fig. 8.
5. Install a u-cup packing (10) on each actuator
piston (11), so the lips of the packings face the
narrow end of the pistons. See Fig. 8.

Graco 253485 Specifications

General

Brand	Graco
Model	253485
Category	Water Pump
Language	English