Repair When Pump Is Separated From Sprayer - Graco 16Y598 Repair Manual

Repair When Pump is Separated
From Sprayer
Disassembling the Pump
1. Remove packing nut (202) and o-ring (228).
202
228
2. Unscrew intake valve from cylinder.
3. Disassemble intake valve. Clean and inspect o-ring
(227).
NOTE: A pick may be required to remove o-ring.
233
215
214
212
227
213
ti23115a
NOTE: Spring (233) only used on 16Y601, 16X423, and
16X425
333028E
ti7566a
ti7569a
ti7570e
4. Tap piston rod out of cylinder with a hammer or flip
over and tap piston rod out against a bench.
NOTE: Sleeve may come out of cylinder with piston rod.
5. Remove piston rod from sleeve, or remove sleeve
from cylinder. Mark IV and Mark VII models:
Remove sleeve spacer (230) from sleeve.
COMPONENT RUPTURE HAZARD
To reduce the risk of serious injury from pressurized
fluid, do not clean or wipe the piston valve threads.
Cleaning the piston valve threads could destroy the
special sealing patch and cause the piston valve to
come loose during operation.
Service
ti7571a
ti7572a
5