Product Manual

Specications Information and Repair Parts Manual 2MP Series
2MPX-250-00 4 11/2016
2MP Series Pumps
cap onto 1-1/2” port of manifold. Tighten until o-ring
compresses against end of port.
4. Install a section of chain (Ref. No. H11) on each cap with a
screw (Ref. No. H10).
5. Free end of three chains terminate on screw installed in
manifold boss located directly under 1-1/2” NPT port.
Install Discharge Manifold
1. Position a ange gasket (Ref. No. D6) on the casing
discharge ange.
2. Position discharge manifold assembly on ange gasket.
Install four screws (Ref. No. H7) tighten to 100 in-lb torque.
Alternate tightening screws in a cross pattern to reduce the
chance of crushing the ange gasket.
REPAIR AND MAINTENANCE INSTRUCTIONS
Shaft Seal Replacement
1. Loosen six screws (Ref. No. H3) until screw disengages
bracket (Ref. No. A1).
2. Remove casing assembly from bracket.
3. Remove screws (Ref. No. A9)
4. Remove di󰀨user cover (Ref. No. A8) and o-ring (Ref. No.
D2).
5. Remove impeller #1 (Ref. No. A11). Impeller unthreads
counterclockwise. Utilize the cast slots in the impeller front
shroud, use a screw driver in slot and tap with a mallet to
loosen impeller. Hold stub shaft (Ref. No. A13) by putting a
socket wrench on screw (Ref. No. A14) installed in end of
shaft if required.
6. Remove di󰀨user #1 (Ref. No. A6).
7. Remove spacer (Ref. No. A12) from shaft.
8. Remove o-ring (Ref. No. D3) from di󰀨user #2 (Ref. No.
A2).
9. Remove ange nuts (Ref. No. A3).
10. Remove di󰀨user #2.
11. Remove impeller #2, use same technique as impeller #1
(Ref. No. A11).
12. Remove stub shaft. Utilize screw in end or machined ats,
shaft unthreads counterclockwise. Removing the engine
recoil starter to hold the engine shaft may be required.
13. 5/8-18 shaft engine driven pumps
• Remove screws (Ref. No. B2) with o-rings (Ref. No.
D11) and remove screws (Ref. No. E6) fastening
bracket (Ref. No. A1) to frame (Ref. No. E1).
• Remove seal plate (Ref. No. B1) & bracket assembly
from engine
14. 1”-14 shaft engine driven pumps
• Remove screws (Ref. No. C6) holding bracket (Ref.
No. A1) to adapter (Ref. No. C4) and remove screws
(Ref. No. F5) fastening bracket to frame (Ref. No. F1).
• Remove bracket and seal plate from adapter.
15. All pumps
• Remove seal seat (stationary ring) (Ref. No. A17) from
seal plate. Discard old seal.
• Remove seal head (rotating ring, Ref. No. A16) from
stub shaft. Discard old seal.
• Replace any o-rings that are worn or damaged.
• Rebuild pump with new replacement seal
assembly, follow COMPLETE PUMP ASSEMBLY
PROCEDURE.
Cleaning Pump
This is a high pressure pump with closed impellers and
di󰀨users. This pump should be used with clean liquids, it will
not pass solids.
1. Remove the casing. Clean out any accumulated solids.
2. Remove all di󰀨users and impellers.
3. The impellers and di󰀨user #1 have internal cast passages
that are di󰀩cult to clean. Using pressurized air or water
may be required to dislodge any accumulated solids.
Running a wire through the passages may also dislodge
solids.
4. Reassemble pump.
Impeller/Diuser Wear
• Pump performance relies on a close running clearance of
the impeller nose in its bore in the di󰀨user cover (impeller
#1), or di󰀨user #2 (impeller #2).
• If the clearance, on diameter, (bore id – impeller nose
od) exceeds 0.06” replacing the di󰀨user cover (Ref. No.
A8) and/or di󰀨user #2 (Ref. No. A2) may be required to
restore performance.
• If pump performance is acceptable there is no need to
replace any parts.
Periodic Maintenance
1. Clean outside of pump and engine to remove accumulated
dirt, oil and grime.
2. Maintain engine according to engine manufacturer’s
recommendations.
3. It is recommended that a replacement shaft seal and seal
kit be kept on hand at all times.
4. Check for leaks during pump operation. Leaks may
occur at shaft seal, casing to bracket connection, suction
and discharge manifold connections and through pump
casing and bracket. Investigate and repair any leaks
immediately.
NOTE: Engine failure due to water intrusion into crankcase
caused by a leaking seal will not be covered by engine or
pump warranty.
5. Mechanical shaft seals are a wear item and require
periodic replacement. Seal life is dependent on many
factors including: liquid pumped, sediment type, operating
point and suction conditions.
6. Inspect for loose fasteners. Tighten any loose fasteners
immediately.