Blackmer Sliding Vane Pump XL2B

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

Flush the pump per instructions in this manual. Drain and relieve pressure from the pump and system as required

Remove the head assembly from the outboard (nondriven) side of the pump according to steps 4 - 8 in the 'Pump Disassembly' section of this manual

Turn the shaft by hand until a vane comes to the top (12 o'clock) position of the rotor. Remove the vane

Install a new vane, ensuring that the rounded edge is UP, and the relief grooves are facing towards the direction of rotation

Repeat steps 3 and 4 until all vanes have been replaced. This method of vane installation ensures the push rods do not fall out of their rotor slots

Reassemble the pump according to the 'Pump Assembly.' section of this manual

Sign off on the vane replacement

NOTICE: To avoid possible entanglement in moving parts do not lubricate pump bearings, gear reducer 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

Grease relief fittings removed from the bearing covers

Grease applied slowly with a hand gun until it begins to escape from the grease relief fitting port

Grease relief fittings replaced

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

Sign off on the pump bearing lubrication

Warning: Blackmer gear reducers are shipped from the factory without oil in the gearcase

Gearcase filled with the grade of oil indicated on the reducer tag

The oil should be changed after the first 48 hours of use and approximately every 500 hours of use thereafter

Oil changed after the first 48 hours of use

Oil changed every 500 hours of use

Sign off on the pump lubrication

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

Flush the pump per instructions in this manual. Drain and relieve pressure from the pump and system as required

Starting on the inboard (driven) end of the pump, clean the pump shaft thoroughly, making sure the shaft is free of nicks and burrs.

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.

To remove locknuts and lockwashers (24A and 24B), bend up the engaged lockwasher tang and rotate the locknut counterclockwise to remove it from the shaft.

Remove the head capscrews (21). Gently pry the head away from the casing using two large screwdrivers. The head O-ring should come off with the head assembly.

Slide the head and O-ring off the shaft. The bearing (24), mechanical seal stationary seat and stationary O-ring (153A & 153D) will come off with the head assembly.

On 4-inch models, remove the disc from the head by removing the disc machine screws (71A) and lockwashers (71B). The mechanical seal rotating assembly (153B, 153C, 153E) will be released when the disc is removed.