Graco Check-Mate 800 Instructions Manual page 16

Repair
2
3
See F . 10,
IG
page 17
9
1
See F . 5,
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page 15
8
18
21
22
F . 7
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7. Pull the intake seat (37) and seal (38) out the
bottom of the intake valve housing (17). Refer to
F . 5, page 15.
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NOTE: Do not drop the check valve assembly (ZE) as it
comes free. Set the check valve aside for later.
16
29
20
8
10
8
17
19
03819
NOTE: If the seat (37) is difficult to remove, insert a
hammer and brass rod through the top of the housing
(17) and drive the seat out.
8. Use a rubber mallet to drive the displacement rod
(1) and the priming piston rod (18) out of the outlet
housing (9) and cylinder (10). Inspect the outer
surfaces of the rods for damage by running a finger
over the surface.
9. Unscrew the packing nut (2). Unscrew the packing
housing (3) and remove the seal (42). Remove the
throat glands and packings (ZF).
ZF
F . 8 Throat Packing Detail
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10. Remove the seal (8) from the bottom of the cylinder
(10). Shine a light into the cylinder to examine the
inside surface for scoring or damage. Refer to F
10, page 17.
11. If the cylinder is damaged, or there is evidence
of leaking around the top cylinder seal (8):
unscrew the cylinder from the outlet housing with a
pipe wrench. Remove the top cylinder seal.
12. Place the flats of the displacement rod (1) in a vise.
Unscrew the piston (12) from the displacement rod.
The priming piston rod (18) will release as well.
Slide the piston guide (11) and seat (14) off the
piston (12). Refer to F
NOTE: It is not necessary to remove the priming piston
rod (18) from the piston (12) unless your inspection
reveals damage to either part.
2
3
42*
03819
. 10, page 17.
IG
308352E
.
IG