ENCORE
®
700 METERING PUMP
a.
Remove the gearbox cover, as described in step a, above.
b.
Drain the gearbox oil.
c.
Remove the worm shaft assembly (51) by pulling it up.
NOTE: Two bearings (6) and (7) and a shim combination (12-15)
come out with the assembly.
d.
Set the knob (47) to zero.
e.
Remove the gear access flange (2) by unscrewing the four M8
screws (3).
f.
Slide the worm wheel (50) and the drive bushing assembly (4)
out through the flange opening.
NOTE: Mark the relative position of the drive bushing (4) and sheave
(46) so that they can be reassembled at the same position.
g.
On a bench, remove the taper roller bearing (30) from the drive
bushing (4).
h.
Unscrew the five M6 screws (10) (for 5" and 6-1/2" liquid end
only) and remove the worm wheel (50).
•
Worm Shaft and Worm Wheel Replacement (refer to Dwg.
440.400.000.010A)
a.
Apply Blue Loctite thread locker (11) to the five M6 screws (10).
Replace the worm wheel (50) and secure with screws (10).
b.
Reverse the remaining procedures for replacement of the worm
shaft and the worm wheel.
•
Eccentric Assembly, Taper Roller Bearings, Connecting Rod,
Stroke Control Housing, and Knob Removal (refer to Dwg.
440.400.000.010A&B)
a.
Follow steps a through d of the procedure for worm shaft and
worm wheel removal, above.
b.
Remove the stroke control knob (47) by loosening the three set
screws (48) just enough to slide the knob out. Do not screw all
the way out, just flush with the surface of the knob.
NOTE: If the pump is equipped with an electric stroke positioner,
refer to the applicable instruction manual.
WT.440.400.001.UA.IM.1012
43
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