Maintenance of W446/440 Piston Pump

Maintenance of W440 Piston Pump

A.   Daily Maintenance

1.    Check the oil level of the power end each shift when shut down the pump.

2.    Check the pistons and liners when they are working to see if there’s obviously wear, tear and leakage.

3.    Check the cooling fluid of the cylinder liner and piston often, and if needed, change it if dirty.

4.    Check the liner’s nozzle everyday to avoid jam and to make sure the liners and pistons are sufficiently cooled and lubricated.

5.    Loosen the piston rod clamp daily and turn the piston quarter round then tighten the rod clamp to make piston wear equally and prolong the life of liners and pistons.

6.    Check the pressure of the pulsation dampener everyday to make sure it meet the demand of the standard.

B.   Weekly Maintenance

1.    Open the valve cap of cylinder and clean the sundries on cap threads and flange threads, and then put thread oil on cleaned screw avoiding abrasion, scrape and bad mesh.(lead base thread oil is advised)

2.    Check the valve and seat abrasion condition and change them if they are worn out or damaged.

3.    Check the liners and pistons, change them if badly worn out or damaged.

4.    Change the piston’s locking nut if they are damaged, rusted or unable to lock.

C.   Monthly Maintenance

1.    Let out the dirty oil in the deposit pool of power end(under the crosshead) per six months and clean it, then refill it with new oil.

2.    Check the clearance between the crosshead and guide plate every six months, adjust it if too large.

3.    Check the tightness of all the double-head stud and nuts including the nuts between thread ring and cylinder, between cylinders and pump shell, between liner bushing and cylinder.

D.   Yearly Maintenance

1.    About one or two years, check the tightness of crankshaft bearing, connection rod bearing, pinion shaft bearing, crosshead bearing. Crosshead guide late. Should have a throughout check if find any problem.

Thanks & Best regards.

Eastland Oilwell Machinery Limited

Clevin Zhao

Email: manager@oilwellmachinery.com

Web: www.oilwellmachinery.comwww.oilwellmachinery.com