Graco 15H871 User Manual
Instructions
15H871 Reducer Seal
Replacement Kit
To replace gear reducer seals 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.
311597C
ENG
ti8682a
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 Installation
1. Jog the motor to bring the motor-side pump to the
bottom of its stroke.
NOTE: Repair the motor side seals first, as follows.
2. Relieve pressure, page 2.
3. Shut off electrical power to the unit.
4. Remove the motor and coupler as follows:
a. See F
IG. 1 for NEMA 184/182 TC Frame electric
motors. See F
Frame electric motors. While one person supports the motor (19), remove the screws (37).
Pull the motor away from the gear reducer.
IG. 2 for IEC 112M/B5 or 100L/B5
37*
Kit Parts
NOTE: Gear Reducer Seal Replacement Kit 15H871
includes parts to replace all gear reducer seals. Parts
included in the kit are marked with an asterisk, for example (5*). Use all the new parts in the kit.
NOTE: Output Shaft Seal Tool Kit 15J926 is available for
removal and installation of the output shaft seals.
Ref.
No. Part No. Description Qty
5* n/a SCREW, cap, socket-head; 5/8-11
x 3 in. (76 mm)
12* 116719 SCREW, 8-32 hex washer head
31* 100664 SCREW, set, socket-head; 1/4-20
x 1/2 in. (13 mm)
37
109* n/a SEAL, input shaft
116* n/a SEAL, output
119* 120395 GASKET, oil plug
n/a
SCREW, cap, flange-head; 1/2-13 x
1.25 in. (31 mm)
20
*31
19
31*
28
Motor Rotation
4
4
2
4
1
4
1
(counter-clockwise as viewed from fan end)
FIG. 1. NEMA 184/182 TC Frame Electric Motors
ti8726a
Parts designated n/a are not available separately.
2 311597C
19
MA
*31
28
37*
20
Kit Installation
5. Remove four screws (12) and both covers (21, 32).
F
IG. 5 shows the cover (32) on the stand side; the
motor side cover is (21).
6. See F
IG. 4. On the motor side of the gear reducer,
unscrew the oil drain plug (118) and remove the
gasket (119). Pierce the input seal (109) with a
hardened sheet metal screw and pull it out.
116*
109*
MS
Motor Rotation
(counter-clockwise as viewed from fan end)
F
IG. 2. IEC 112M/B5 or 100L/B5 Frame Electric
Motors
b. See FIG. 3. Loosen both setscrews (31). Insert
the coupler removal tool (T) into the coupler
(28). Turn nut clockwise until tight, then pull the
coupler off the gear reducer input shaft (105) by
turning hex-head screw (HS) clockwise.
20
105
ti9007a
T
118
116*
119*
ti8682a
FIG. 4. Gear Reducer Seals
7. Place tape over the input shaft keyway, to prevent
damage to the new seal. Pack the input shaft seal
cavity with Part No. 107411 Grease. Install the input
seal (109*) with the lip facing in, until the seal contacts the shoulder of the gear reducer housing.
Remove the tape.
8. Install the gasket (119*) on the oil drain plug (118)
and screw the plug into the gear reducer. Tighten
securely.
28
F
IG. 3. Motor Coupler Removal
311597C 3
HS
ti8743a
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