Graco 249570 A, Instructions-Parts List Manual

Page: 38 / 68

Repair
38 311075ZAB
Displacement Pump
Refer to your displacement pump manual for repair and
parts information.
NOTE: Use a dropcloth or rags to protect the Reactor
E-10 and surrounding area from spills.
1. Follow Before Beginning Repair , page 36.
2. Follow Pressure Relief Procedure , page 22.
3. Close both fluid inlet ball valves (52).
4. Open the filter drain plug on Y-strainer (51).
Remove the Intake Valve
NOTE: If the pump is not generating any pressure, the
intake ball check may be stuck closed with dried
material.
If the pump is not generating pressure on the
downstroke, intake ball check may be stuck open.
Either of these conditions can be serviced with the pump
in place.
1. Disconnect the fluid inlet (C) and swing it aside.
2. Remove the intake valve by hitting the ears (E)
firmly right-to-left with a non-sparking hammer.
Unscrew from pump. Refer to your displacement
pump manual for repair and parts information.
Remove the Pump Assembly
1. Disconnect the fluid inlet (C) and outlet (D) lines.
Disconnect the steel outlet tube (16) from the heater
inlet.
2. Remove the pump rod cover (222). Push clip up in
back and push pin (217) out.
3. Loosen locknut (218) by hitting firmly right-to-left
with a non-sparking hammer.
4. Unscrew the pump. See your pump manual for
repair and parts information.
5. Install the pump in reverse order of disassembly,
following all notes in F
IG
. 12. Clean the strainer (51).
Reconnect fluid inlet (C) and outlet (D) lines.
6. Tighten fluid outlet fitting (D), then tighten locknut
(218) by hitting firmly with a non-sparking hammer.
7. Open fluid inlet valve (52). Set function knob to Slow
Recirc . Purge air and prime. See Purge Air
and Flush the Fluid Lines , page 20.
51
52
F
IG
. 12 Displacement Pump
Flat side faces up. Tighten by hitting
firmly with non-sparking hammer.
1
Lubricate threads with ISO oil or grease. 2
217
16
222
D
218
51
C
E
1 2
2
2