Page 1
Instructions
15H873 Drive Linkage
Rebuild Kit
To rebuild one drive linkage 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.
311598C
ENG
ti8717a
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 pump 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. Shut off electrical power to the unit.
4. Remove two screws (12) and the cover. F
shows the cover (32) on the stand side; the motor
side cover is (21).
5. Place a clean rag over the top of the slider cylinder
(2) to prevent debris from falling into the slider
assembly during disassembly.
9
Place clean rag over slider cylinder (2).
10
Hold slider piston (9) flats with 3/4 in. wrench, and brace
against tie rod (3).
IG. 1
NOTE: Drive Linkage Rebuild Kit 15H873 includes parts
to rebuild one drive linkage assembly. Order two kits to
rebuild both drive linkage assemblies. Parts included in
the kit are marked with an asterisk, for example (5*).
Use all the new parts in the kit.
Ref.
No. Part No. Description Qty
5* n/a SCREW, cap, socket-head; 5/8-11
x 3 in. (76 mm)
6* 106082 RING, retaining
7* n/a ROD, connecting
8* n/a BEARING, slider
9* n/a PISTON, slider
10* n/a PIN, lower con rod
11* n/a RING, retaining
12* 116719 SCREW, 8-32 hex washer head
Parts designated n/a are not available separately.
2
3
2
1
2
1
1
1
FIG. 1. Remove Coupling Nut
2
32
9
10
14
12
ti9223b
2 311598C
Page 3
Kit Installation
6. Place a 3/4 in. wrench on the slider piston (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.
7. 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).
8. See F
IG. 2. Using a 1/2 in. hex driver, unscrew the
two cap screws (5). Remove the crank arm cap (38)
and key (39). If necessary, use a plastic hammer to
break these parts loose.
9
Place clean rag over slider cylinder (2).
12
Apply antiseize lubricant to screw (5) threads. Torque
key-side screw to 210-230 ft-lb (283-310 N•m) first, then
torque gap side screw to 210-230 ft-lb (283-310 N•m).
5
12
9. See F
IG. 3. Rotate the crank arm (4) to allow it to be
removed from the output shaft (OS).
10. Pull the crank arm/connecting rod/slider piston
assembly (CR) up and out of the cylinder.
11. Remove the old bearings (8).
4
CR
OS
ti9225a
FIG. 3. Rotate Crank Arm
F
IG. 2. Remove Crank Arm Cap
38
39
9
ti9224b
311598C 3
Page 4
Kit Installation
Reassembly
1. See FIG. 4. Orient the new connecting rod (7*) and
slider piston (9*) as shown. Assemble the crank arm
(4), retaining rings (6*), pin (10*), and retaining ring
(11*).
6*
4
7*
GZ
*9
*8
F
IG. 4. Drive Linkage Assembly
8*
10*
11*
ti8717a
5. Position the crank arm (4) to engage the output
shaft (OS), and rotate it to the bottom of the output
shaft.
6. Place a clean rag over the top of the slider cylinder
(2) to prevent debris from falling into the slider
assembly during reassembly.
7. See F
IG. 6. Apply antiseize lubricant to the threads
of the cap screws (5*). Install the key (39), crank
arm cap (38), and cap screws (5*), oriented as
shown. While the gap-side screw is still loose,
torque the key-side screw to 210-230 ft-lb (283-310
N•m). Then torque the gap-side screw to 210-230
ft-lb (283-310 N•m).
9
Place clean rag over slider cylinder (2).
12
Apply antiseize lubricant to screw (5) threads. Torque
key-side screw to 210-230 ft-lb (283-310 N•m) first, then
torque gap side screw to 210-230 ft-lb (283-310 N•m).
5*
12
38
2. Lubricate the lower bearing on the connecting rod
with 1 shot (1 cc) of 107411 Grease or equivalent,
using grease zerk (GZ). The top bearing is prelubricated and does not require grease at installation.
3. See F
IG. 5. 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.
7*
*9
8*
*8
ti8719a
IG. 5. Slider Bearings
F
PH
4. Slide the piston (9*) and connecting rod (7*) into the
cylinder (2).
9
ti9224b
IG. 6. Install Crank Arm Cap
F
8. Ensure that the collars (13) are in place in the coupling nut (14).
9. 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).
10. Remove the rag. Reinstall the cover (32 or 21) and
screws (12*).
39
4 311598C
Page 5
Kit Installation
311598C 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.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
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warranties.
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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
negligence of Graco, or otherwise.
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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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TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.
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 311598
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