Blackmer Sliding Vane Pump HXL8G

NOTICE: Maintenance shall be performed by qualified technicians only, following the appropriate procedures and warnings as presented in this manual

Strainers cleaned regularly to avoid pump starvation

Schedule will depend upon the application and conditions

NOTICE: Follow all hazard warnings and instructions provided in the “Maintenance” section of this manual

NOTICE: Use a hoist and appropriate sling or lifting lugs attached to the baseplate to lift the entire pump assembly. Eyebolts attached to the pump, gearbox, or motor must be used to lift that particular component only

NOTICE: Use a hoist and eyebolts installed in the threaded holes located in the heads, discs, rotor and casing to lift the heavy pump parts

Flush the pump per instructions in this manual. Drain and relieve pressure from the pump and system as required. A 3/4\ drain plug (29) is fitted in each head"

With the pump upright. Clean the pump shaft thoroughly, making sure the shaft is free of nicks and burrs. This will prevent damage to the mechanical seal when the inboard hub or head assembly is removed

Remove the inboard bearing cover capscrews (28) and slide the inboard bearing cover (27A) and gasket (26) off the shaft. Discard the bearing cover gasket

Remove the outboard bearing cover capscrews (28) and slide the outboard bearing cover (27) and gasket (26) off the shaft. Discard the bearing cover gasket

Removing the locknuts and lockwashers

Bend up the engaged lockwasher tang and rotate the locknut counterclockwise to remove it from the shaft

NOTICE: Maintenance shall be performed by qualified technicians only, following the appropriate procedures and warnings as presented in manual

Pump flushed per instructions in manual?

Pressure from the pump and system relieved?

Head assembly removed from the outboard (nondriven) side of the pump?

Vane at the top (12 o'clock) position of the rotor?

New vane installed with rounded edge UP and relief grooves facing towards the direction of rotation?

NOTICE: To avoid possible entanglement in moving parts do not lubricate pump bearings, hydraulic adapter coupling or any other parts while the pump is running

NOTICE: If pumps are repainted in the field, ensure that the grease relief fittings (76A) are functioning properly after painting. Do NOT paint them closed. Remove any excess paint from the fittings

Ball bearings must be lubricated every three months at minimum. More frequent lubrication may be required depending on the application and operating conditions

Remove the grease relief fittings (76A) from the bearing covers (27 and 27A)

SLOWLY apply grease with a hand gun until grease begins to escape from the grease relief fitting port. Discard excess grease in accordance with proper codes and regulations

Replace the grease relief fittings (76A). DO NOT overgrease pump bearings. While it is normal for some grease to escape from the grease tell-tale hole after lubrication, excessive grease can cause mechanical seal failure. The tell-tale hole is located in the head or hub between the bearing and the seal. Lubricate the ball bearings, and hydraulic motor couplings (if equipped), every three months at a minimum

Sign off on the pump lubrication