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10 312375J
11. Use an o-ring pick to remove seal (21) from intake
valve housing (19). Discard seal; use a new one for
reassembly. See F
IG. 10.
12. Pull intake seat (20) out bottom of intake valve hous-
ing (19). Take care not to drop intake valve assem-
bly (R) as it comes free, and set it aside for later.
13. Use a rubber mallet to drive displacement rod (1)
and priming piston rod (24) out of outlet housing (2).
Inspect outer surfaces of rods for damage by run-
ning a finger over the surface.
14. 500cc Displacement Pumps Only: use a socket
wrench to remove six capscrews (45).
15. Tap underside of outlet housing (2) with a rubber
mallet to loosen housing from cylinder (17). Lift out-
let housing off displacement pump and set it aside.
Be careful not to scratch displacement rod (1) while
removing housing. Remove seal (18) from top of cyl-
inder.
16. Lift cylinder (17) up off intake housing (22). Dis-
placement rod (1), piston assembly, intake valve
assembly, and priming piston rod (24) will come with
cylinder.
17. Place cylinder (17) sideways in a vise with soft jaws.
Using a rubber mallet on end of priming piston rod
(24), drive displacement rod (1) and piston assem-
bly out of the top of the cylinder. Continue to pull rod
out of cylinder until priming piston rod (24) comes
free.
18. Remove seal (18) from bottom of cylinder (17). Hold
cylinder up to light at an angle to examine inside
surface for scoring and damage.
If seat (20) is difficult to remove, insert a hammer
and brass rod through the top of housing (19) and
drive seat out.
F
IG. 10
F
IG. 11
r_000000_312375_2
19
20
21
R
ti10568a
1
2
24
Steps 14-19 apply to 500cc displacement
pumps only.
F
IG. 12
45
ti10584a