Service
15.To disassemble the piston guide assembly (V), place the flats of the piston seat (15) in a vise. Close the jaws just tight enough to hold the part; it can be damaged by squeezing it too tightly. Using an 8 mm (5/16 in.) dia. brass rod, unscrew the piston guide (12) from the piston seat (15). See Fig. 5. Remove the piston seal (14); always re- place with a new one. Inspect the mating surfaces of the piston (13) and piston seat (15) for nicks, scoring or wear.
15
Brass
Rod
16.To disassemble the intake check valve assembly (U), place the nut (27) in a vise and unscrew the intake valve body (25) from the nut, using a 25 mm wrench. See Fig. 6. Remove the seal (30) from the nut (27) and the other seal (26) from the valve body; always replace them with new ones. Inspect the mating surfaces of the intake valve body (25) and seat (18) for wear, scoring, or other damage.
27
25
12
Fig. 6
0206
Fig. 5 | 0205 |
|
NOTE: The seal (30) is
17.Inspect all parts and threads, and clean with a compatible solvent. To reassemble, see page 17.
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