Page 1
Instructions
15H874 Slider Cylinder
Rebuild Kit
To rebuild one slider cylinder assembly on E-Flo® Electric Circulation Pumps.
For professional use only.
Important Safety Instructions
Read all warnings and instructions in this manual
and in E-Flo Repair-Parts manual 311594. Save
these instructions.
311599C
ENG
ti8317b
Page 2
Pressure Relief Procedure
Pressure Relief
Procedure
System pressure can cause the pump to cycle unexpectedly, which could result in serious injury from
splashing or moving parts.
1. Set START/STOP switch to STOP.
2. Push in SECURE DISABLE switch.
3. Open the back pressure regulator and all fluid drain
valves in the system, having a waste container
ready to catch drainage. Leave open until you are
ready to pressurize system again.
4. Check that pressure gauges on fluid supply and
return lines read zero. If gauges do not read zero,
determine cause and carefully relieve pressure by
VERY SLOWLY loosening a fitting. Clear obstruction before pressurizing system again.
Kit Parts
Kit Installation
Disassembly
1. 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).
2. Relieve pressure, page 2.
3. See F
4. Using a 1-5/8 in. open-end wrench, unscrew the
5. Shut off electrical power and allow the unit to cool.
IG. 1. 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/connecting rod can shorten the life of the lower pin
bearing.
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).
NOTE: Slider Cylinder Rebuild Kit 15H874 includes
parts to rebuild one slider cylinder assembly. Order two
kits to rebuild both slider cylinder assemblies. Parts
included in the kit are marked with an asterisk, for example (2*). Use all the new parts in the kit.
Ref.
No. Part No. Description Qty
2* n/a CYLINDER, slider
8* n/a BEARING, slider
15* 108683 NUT, lock, hex
16* 120351 GASKET, sanitary
31* 100664 SCREW, set, socket-head; 1/4-20
x 1/2 in. (13 mm)
41* 111316 O-RING; chemically resistant fluo-
roelastomer
Parts designated n/a are not available separately.
10
Hold slider piston (9) flats with 3/4 in. wrench, and brace
against tie rod (3).
1
2
3
4
1
3
1
FIG. 1. Remove Coupling Nut
32
9
10
14
12
ti9223b
2 311599C
Page 3
Kit Installation
6. Disconnect the fluid inlet and outlet lines from the
pump. Plug the ends to prevent fluid contamination.
7. See F
IG. 2. At the pump outlet manifold (17), loosen
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.
8. Loosen the clamps (18) at the inlet and outlet manifolds (17). Remove the manifolds and gaskets (16).
21
*8
*2
43
*41
9. Remove the coupling nut (14) and collars (13) from
the piston rods (PR).
10. Unscrew the locknuts (15). Remove the lower (22).
11. Remove two screws (12) and the cover. F
IG. 1
shows the cover (32) on the stand side; the motor
side cover is (21).
12. Remove the setscrew (31). Unscrew the slider cylinder (2) from the gear reducer (1).
13. Remove the bearings (8) from the slider piston (9).
12
32
17
42
18
7
25a
12
13
PR
31*
*16
1
9
14
14
5
22
*16
4
Torque to 50-60 ft-lb (68-80 N•m).
*15
18
17
4
7
5
Torque to 75-80 ft-lb (102-108 N•m).
7
Torque to 15-20 ft-lb (21-27 N•m).
14
Apply lithium grease.
ti8723b
F
IG. 2: Slider Cylinder Rebuild Kit
311599C 3
Page 4
Kit Installation
Reassembly
1. See FIG. 3. Install the two new bearings (8*) on the
slider piston (9). The joints between the bearings
must align with the pin hole (PH) in the slider piston.
2. Screw the slider cylinder (2*) into the gear reducer
(1). Torque to 15-20 ft-lb (21-27 N•m). Install the setscrew (31*).Torque to 30-35 in-lb (3.4-3.9 N•m).
3. Install two screws (12) and the cover (32 is shown;
use 21 on the motor side).
4. Install the coupling nut (14) on the lower’s piston rod
(PR).
5. Orient the lower (22) to the gear reducer (GR) as
shown. Position the lower on the tie rods (3). Screw
the tie rod locknuts (15*) included in the kit onto the
tie rods handtight.
6. Assemble the inlet and outlet manifolds (17) to the
lower, using new gaskets (16*). Torque the clamps
(18) to 15-20 ft-lb (21-27 N•m).
7. Torque the locknuts (15*) to 50-60 ft-lb (68-80 N•m).
8. Install a new black o-ring (41*) on the transducer
(25a).
9. Insert the transducer into the outlet manifold (17).
Torque the adapter (42) first, then the nut (43) to
15-20 ft-lb (21-27 N•m).
10. Ensure that the collars (13) are in place in the coupling nut (14).
11. Place a 3/4 in. wrench on the flats of the slider piston (9), to keep it from turning when you are tightening the coupling nut (14). Orient the wrench so it is
braced against one of the tie rods (3) or the pump
stand. Tighten the coupling nut (14) onto the slider
piston (9) and torque to 75-80 ft-lb (102-108 N•m).
12. Turn on power and jog the motor to repeat procedure for the other lower.
13. Flush and test the pump before reinstalling it in the
system. Connect hoses and flush the pump. While it
is pressurized, check for smooth operation and
leaks. Adjust or repair as necessary before reinstalling in the system.
4 311599C
Page 5
Kit Installation
.
21
*8
7
*41
17
18
43
5
*2
12
32
42
25a
12
13
PR
31*
1
*16
PH
9
14
14
22
*16
4
Torque to 50-60 ft-lb (68-80 N•m).
*15
18
17
4
7
5
Torque to 75-80 ft-lb (102-108 N•m).
7
Torque to 15-20 ft-lb (21-27 N•m).
14
Apply lithium grease.
ti8723b
FIG. 3: Slider Cylinder Rebuild Kit
311599C 5
Page 6
Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or
maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.
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the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
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The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
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Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505
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Original instructions. This manual contains English. MM 311599
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