Blackmer Sliding Vane Pump TXD2A

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

Head assembly removed from the outboard (non-driven) side of the pump

Shaft turned by hand until a vane comes to 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! Follow all hazard warnings and instructions provided in the 'Maintenance' section of the manual

Clean Pump Shaft. Start on the inboard (driven) end of the pump. Clean the pump shaft thoroughly, ensuring it is free of nicks and burrs. This prevents damage to the mechanical seal when the inboard head assembly is removed

Remove the inboard bearing cover capscrews (28). Slide the inboard bearing cover and gasket off the shaft. Discard the bearing cover gasket

Remove the outboard bearing cover capscrews. Slide the outboard bearing cover and gasket off the shaft. Discard the bearing cover gasket

If equipped with locknuts and lockwashers, bend up the engaged lockwasher tang and rotate the locknut counterclockwise to remove it from the shaft. Slide the lockwasher off the shaft. Inspect the lockwasher for damage and replace as required. Repeat steps on the opposite shaft end

The TX4-inch pump model is equipped with bearing lock collars. To remove, remove the jam nuts and loosen the two set screws. Slide the lock collar off the shaft. Repeat steps on the opposite shaft end

Remove the head capscrews and carefully pry the head away from the cylinder. Slide the head off the shaft. The head O-ring, bearing, and mechanical seal will come off with the head assembly. Remove and discard the head O-ring

Pull the rotor and shaft from the cylinder. While one hand is pulling the shaft, the other hand should be cupped underneath the rotor to prevent the vanes and push rods from falling out. Carefully set the rotor and shaft, vanes, and push rods aside for future vane replacement and reassembly

Remove the remaining components from the outboard side of the pump

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: 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

Lubricate the ball bearings, and hydraulic motor couplings (if equipped), every three months at a minimum

Remove the grease relief fittings (76A) from the bearing covers (27A) or hydraulic motor adapter (135)

Apply grease with a hand gun until grease begins to escape from the grease relief fitting port

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 on pumps equipped with mechanical seals can cause seal failure