Instruction Manual for F1300/1600 Mud Pump
18
1.8 Shear safety Valve
Fig 12
(1)Connector (2)Retainer Ring (3)Piston Assy. (4)Body (5)Piston Rod (6)Bumper (7)Pin (8)Spring
(9)Safety Cap (10)Shear Bar (11)Shear Pin (12)Warning Plate (13)Pin shaft (14) Retainer Ring
(15)Name Plate (16)Cotter Pin (17)Nut (18)Cap screw (19)Bolt (20)Nut
（
21
）
Cap screw
JA-3 shear pin safety valve structure refers to Fig 12. When the pump pressure exceeds the rating
pressure, the force of piston (3) will jack up shear pin plate (10), which will cause the shear pin (11)
broken and the fluid emptying fast.
Change the position of shear pin can adjust the release pressure value. The operation is simple and
reliable.
Each classification work pressure is marked on the shear bar. When adjust the pressure, what to do is
just to put the shear pin in the relevant hole according to the given pressure. Note: There must be
only one shear pin in the shear bar one time! Adjust the pressure with the liner changes.
（
Refer to
Section 1.1.2
）。
Wire, arc welding or other alternative material are strictly forbidden, otherwise the
valve pressure is affected which maybe a reverse accident.
2.
Lubrication
Proper lubrication of the moving parts in any piece of machinery is the most important since this
directly affects its ultimate life. To obtain maximum trouble-free service life from the power end of
pump, it is necessary to perform routine maintenance care and an inspection to insure the proper
amount of CLEAN lubricant is being provided on the fiction surface of moving parts.
2.1 Minimum Operating Speeds
The F-Series pumps utilize the controlled flow oil bath splash and pressure system to lubricate the
entire power end. The type of pressure system provided in each individual pump will govern the
minimum stroke at which the pump can be operated. The pressure lubricating system of F-1300/1600
mud pump is shown in Fig.13, which can be operated at 25 strokes/minute (oil pressure is 0.035 Mpa;
5psi)
