Hydraulic Powered Vacuum Pump - Major 1150 Slurry Vac Operator's Manual & Parts List

Hydraulic Powered vacuum pump

The following procedure must be followed before use. Failure to do so will result in oil seal failure in the
hydraulic driven pump.
• The main feed to the pump must never exceed ½" bore and enter the hydraulic pump on the smallest port.
• The return flow should have a ¾" minimum bore from the largest port and be allowed a free flow return into the
gearbox if the tractor (usually by making an adaptor where the oil plug is) not by going through any valve block
system. Contact your tractor dealer or manufacturer for further details if you are uncertain of free flow return line.
• Any backpressure will result in seal failure, such as using small bore tubing or allowing return pipe to foul,
restricting oil flow.
• Never alternate hydraulic pipes. The motor will only drive in one direction.
• It is normal for the motor to reduce in speed as the tanker reaches full pressure or full vacuum.
• Change oil in tractor regularly with oil and change filters regularly.
• Always when travelling on public roads place tanker in "vacuum mode".
• Never bring hydraulic pipes into tractor cab or where it could be a danger to the driver.
• In the event of a failure, contact your dealer. Do not attempt to repair oil pump, but first establish whether the fault
is the hydraulic pump or the compressor.
Hydraulic Motor
Rotary blades
Hydraulic Motor vacuum pump
MEC 8000/H
KM 30.51-SO
MEC 9000
MEC 11000
KM40.87-SO
MEC 13500
Blow Off Valve Adjustment
Check blow off valve is set at 0.7 bar. Below are two types used.
• Slacken
Collar 'A'
• Adjust threaded part
'B' until a steady 0.7 bar
is achieved on the clock
pump is pressurising
tanker.
• Tighten
Collar.
12
Flow Rate Rpm
74.8 l/min
1400
125 l/min
125 l/min
Locking
Locking
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Max
pressure
hydraulic Transmitted
Pressure system
218 bar 230 bar
186 bar
280 bar
198 bar
• Slacken Locking
screw 'A'
• Adjust threaded
stem 'B' until a steady
0.7 bar is achieved on
the clock while pump is
pressurising tanker
• Tighten Locking
screw
power Torque
22.5 kW
158 Nm
30 kW
32 kW 211 Nm
34 kW 240 Nm