Graymills DDP 1' Pump OMI User Manual
Page 16
16
04159
Figure 9
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
04160
1
2
8
9
{
3
Rounded side
must face down.
Tighten screws until
they bottom out on the
housing.
Figure 10
1
2
Reassembly
1.
If you removed the bearings (12, 15), install new ones
as explained on page 21. Reassemble the fluid section.
2.
Install the valve plate seal (9
{) into the groove at the
bottom of the valve cavity. The rounded side of the
seal must face down into the groove. See Fig. 10.
3.
Install the valve plate (8) in the cavity. The plate is
reversible, so either side can face up. Install the three
screws (3), using a torx screwdriver or 8 mm (or 5/16”)
socket wrench. Tighten until the screws bottom out on
the housing. See Fig. 10.
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. 9.
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. 9.
6.
Lubricate the u-cup packings (10
{) and actuator
pistons (11). Insert the actuator pistons in the bearings
(12), wide end first. Leave the narrow end of the
pistons exposed. See Fig. 9.
7.
Grease the lower face of the pilot block (18
{) and
install so its tabs snap into the grooves on the ends of
the pilot pins (16). See Fig. 8.
8.
Grease the o-ring (6
{) and install it in the valve block
(7
{). Push the block onto the valve carriage (5). Grease
the lower face of the valve block. See Fig. 8.
9.
Install the valve carriage (5) so its tabs slip into the
grooves on the narrow end of the actuator pistons (11).
See Fig. 8.
10. Align the valve gasket (4
{) and cover (2) with the six
holes in the center housing (1). Secure with six screws
(3), using a torx screwdriver or 8 mm (or 5/16”) socket
wrench. Torque to 28 to 33 in-lb (3.2 to 3.7 N.m). See
Fig. 7.