Repair
58 3A6748B
Pump Repair 506/657
Disassembly
NOTE: It may be easier to leave the pump
connected to the connecting rod and bearing
housing if the only assembies to be cleaned
and inspected are the intake housing or
piston valve.
1. Perform Pressure Relief Procedure,
page 19. Unplug power cord to
disconnect power.
2. Refer to Pump Removal, page 54, to
remove pump.
3. Remove clamp and intake housing.
4. Remove clamp and pump cylinder.
5. Remove packing nut. Push piston rod
from outlet housing.
6. Place end of piston rod in vise and
remove piston valve (12). Remove
piston seal (16). Inspect all parts for
nicks and scratches. Replace worn or
damaged parts as they may result in
poor pump performance.
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