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Repair
311594Z 15
Repair
Fluid Section
NOTE: 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 hardware, and
instruction manual 311611.
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 9.
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 9.
4. Remove the 2-piece shield (72, see F
IG
. 5) by
inserting a screwdriver 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.
5. See F
IG
. 4. Place a 3/4 in. wrench on the slider pis-
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.
Kit Part
No.
Lower
Part No. Description
289553 24F417
750 cc, Chrome
15J747 24F428
1000 cc, Chrome
15J748 24F436 1500 cc, Chrome
15J749 24F444
2000 cc, Chrome
16F420 24F418
750 cc, MaxLife
15J750 24F429
1000 cc, MaxLife
15J751 24F437
1500 cc, MaxLife
15J752 24F445
2000 cc, MaxLife
F
IG
. 4. Remove Coupling Nut
ti9223c
3
12
14
9
Hold slider piston (9) flats with 3/4 in. wrench, and brace
against tie rod (3).
10
10
32
9