Repair; Fluid Section - Graco E-Flo EP G Series Repair Parts

Repair

Fluid Section

NOTE: Manifold Gasket Kit 15H878 is available to
replace the sanitary gaskets at the inlet and outlet mani-
folds. The kit includes items 16, 41, 58, two 120631
PTFE Gaskets, and instruction sheet 406637.
Disassembly
1. Flush the pump, see page 7.
2. Jog the motor to bring the lower on the side being
repaired to the bottom of its stroke. This provides
access to the coupling nut (14).
3. Follow the Pressure Relief Procedure, page 7.
4. Pumps with Sealed Lowers: Remove the 2-piece
shield (72, see F . 5) by inserting a screwdriver
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straight into the slot, and using it as a lever to
release the tab. Repeat for all tabs. Do not use the
screwdriver to pry the shields apart.
F . 4. Shield Disassembly
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3A3386E
Step 1
Step 2
ti15759a
ti15770a
5. See F . 5. Place a 3/4 in. wrench on the slider pis-
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ton (9) flats (just above the coupling nut), to keep
the slider piston/connecting rod from turning when
you are loosening the coupling nut (14). Orient the
wrench so it is braced against one of the tie rods (3).
Applying excessive force to the slider piston/con-
necting rod can shorten the life of the lower pin
bearing.
6. Using a 1-5/8 in. open-end wrench, unscrew the
coupling nut (14) from the slider piston (9) and let it
slide down onto the pump piston rod. Be careful not
to lose the collars (13).
7. Repeat steps 2-6 for the other lower.
8. Shut off electrical power and allow the unit to cool.
10
Hold slider piston (9) flats with 3/4 in. wrench, and brace
against tie rod (3).
3
F . 5. Remove Coupling Nut
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Repair
9
10
14
72
ti27600a
13