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Specifications Information and Repair Parts Manual
Install Ports and Plugs
1.
Install an O-ring (Ref. No. 30) on each of two plugs (Ref. No. 29). Thread
one plug into fill port on discharge manifold (Ref. No. 24) and one plug
into casing drain port.
2.
Align a gasket (Ref. No. 26) onto discharge flange of casing. Install
discharge manifold onto casing with four screws (Ref. No. 25). Torque
screws to 100 in-lbs., alternate tightening screws in a cross pattern to
eliminate crushing the gasket.
3.
Align a gasket (Ref. No. 26) onto suction flange of casing. Install suction
flange (Ref. No. 23) onto casing with four screws (Ref. No. 25). Torque
screws to 100 in-lbs., alternate tightening screws in a cross pattern to
eliminate crushing the gasket.
REPAIR AND MAINTENANCE INSTRUCTIONS
Shaft Seal Replacement
1.
Loosen six screws (Ref. No. 27) until screw disengages square nut (Ref.
No. 4) in bracket.
2.
Remove casing assembly from bracket.
3.
Remove screws (Ref. No. 19) holding volute (Ref. No. 18) to bracket.
4.
Remove volute.
5.
Remove impeller (Ref. No. 11). Keyed shaft impellers; remove impeller
screw (Ref. No. 15), inspect O-ring (Ref. No. 16) replace if required.
6.
Pry worn rotating half of shaft seal (Ref. No. 8) from impeller hub. Discard
seal.
7.
Remove screws (Ref. No. 6) holding bracket to engine, inspect O-rings
(Ref. No. 7), replace if required.
8.
Remove bracket from engine.
9.
Press stationary half of shaft seal (Ref. No. 8) from bracket. Discard seal.
10. Replace any O-rings (Ref. Nos. 17 & 20) that show signs of wear or
damage.
11. Rebuild pump with new shaft seal. Follow Pump End Assembly
Instructions.
Cleaning Pump
1.
Loosen six screws (Ref. No. 27) until screw disengages square nut (Ref.
No. 4) in bracket.
2.
Remove casing assembly from bracket.
3.
Remove screws (Ref. No.19) holding volute (Ref. No. 18) to bracket.
4.
Remove volute.
5.
Clean debris and sediment from inside of casing, volute, and impeller.
Clean all volute passages and impeller vanes. Make sure closed impeller
vane passages are clean by running a wire from impeller outside diameter
to impeller eye. Remove any foreign objects clogging passages.
6.
Check all parts for excessive wear or damage. Replace parts as required.
7.
Reassemble pump.
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,
800-350-8739
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.
4
BRP500TP2, BRP520TP3, BRP650HP2
MBRP500TP2 Rev A | 3/2020
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