Repair; Fluid Section; Disassembly - Graco E-Flo Plus Repair Manual

Repair

Fluid Section

Complete kits are available to convert from one size
lower to another. See the table below for available
kits. Use all the new parts in the kit. The kits include
two lowers, inlet/outlet manifolds, connecting hard-
ware, and instruction manual 311611.
Kit Part Lower
No. Part No.
15J747 253520
15J748 253521
15J749 253522
15J750 253523
15J751 253524
15J752 253525
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. Relieve pressure, page 7.
4. See F . 3. Place a 3/4 in. wrench on the slider pis-
IG
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.
12
Description
1000 cc, Chromex
1500 cc, Chromex
2000 cc, Chromex
1000 cc, Maxlife
1500 cc, Maxlife
2000 cc, Maxlife
5. 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).
6. Repeat steps 2-5 for the other lower.
7. 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 . 3. Remove Coupling Nut
IG
8. Disconnect the fluid inlet and outlet lines from the
pump. Plug the ends to prevent fluid contamination.
9. See F . 4. At the pump outlet manifold (17), loosen
IG
the transducer nut (43) and unscrew the adapter
(42) from the manifold. Remove the transducer
(25a) from the manifold port. Remove the existing
o-ring (41) and discard.
10. Loosen the clamps (18) at the inlet and outlet mani-
folds (17). Remove the manifolds and gaskets (16).
11. Remove the coupling nut (14) and collars (13) from
the piston rods (PR).
12. Unscrew the locknuts (15). Remove the lower (22).
To repair the lower, see manual 311690.
Repair
32
9
9
10
12
14
ti9223a
311594B