18 308017
Service
13. Place the flats of the piston seat (16) in a vise.
Using a 13 mm (1/2 in.) dia. brass rod (EE), un-
screw the piston guide (14) from the piston seat
(16). See Fig. 6. Remove the piston seal (15);
always replace with a new one. Inspect the mating
surfaces of the piston (13) and piston seat (16) for
nicks, scoring or wear.
Fig. 6
14
16
0205
EE
14. To disassemble the intake check valve (DD), place
the nut (18) in a vise and unscrew the intake valve
body (19), using a 28 mm wrench. See Fig. 7.
Remove the seals (42, 20) from the nut and from
the valve body; always replace them with new
ones. Inspect the mating surfaces of the intake
valve body (19) and seat (22) for wear, scoring, or
other damage.
NOTE: The seal (42) is press-fit in the nut (18) and
may require cutting to ease removal.
15. Inspect all parts for damage and clean with a
compatible solvent. To reassemble, refer to page
19.
Fig. 7
19
18
0206
