Brush Bandit 1290XP, Инструкция по эксплуатации и каталог запасных частей

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Bandit
Copyright 12/07 PAGE 6
MODELS 1290XP/1590
HYDRAULIC PUMP CHECK OUT WITHOUT USING A FLOW METER
To check out the hydraulic pump the mechanic will need a needle type flow control valve, a pressure gauge capable
of reading 3000 psi (207 bar) and a long enough hose that will span between the pump and the hydraulic tank.
1) Disconnect the pressure line going from the pump at the first component and cap the fitting at the component.
2) Attach a Tee fitting to the end of the pressure hose (which was removed from the component) and
install the Tee fitting and gauge.
3) Attach the hydraulic flow control valve to the Tee fitting and the hose (you supply) to the outlet port of the
flow control valve.
)
Make sure the pressure gauge is installed up stream from the flow control valve.
Failure to do this will cause serious damage to the hydraulic pump when testing.
5) If the hydraulic oil tank is equipped with a mesh strainer in the fill neck, remove it and place the open
end of the hose (you supply) into the tank fill neck.
6) MAKE SURE THAT THE FLOW CONTROL VALVE IS FULLY OPEN SO AS TO ALLOW
UNRESTRICTED FLOW TO PASS THROUGH IT.
7) Start the engine to engage the pump, the clutch may have to be engaged if the pump is belt driven.
8) Have a second person lift the hydraulic hose far enough out of the tank inlet to observe the flow of oil
going into the tank. Observe the pressure gauge reading to make sure a high pressure does not exist.
9) Increase the engine speed slowly to full rpm and at the same time observe the pressure. This should
still remain low.
10) SLOWLY
turn the needle valve on the flow control in and observe the pressure increase on the
pressure gauge.
11) Continue closing the flow control valve until the pressure gauge reading reaches 90% of the normal
relief valve setting (example: if system operates at 2500 psi (172 bar), do not exceed 2250 psi (155 bar).
Never allow the pressure to go more than 90% of the main relief pressure.
12) If the pump is good there should be no noticeable decrease in the flow rate coming out of the hose and
into the hydraulic tank.
13) If 90% of the main relief pressure can not be obtained and/or the flow rate of the hose is considerably
less, then the pump is worn or damaged.
HYDRAULIC PUMP CHECK OUT
HYDRAULIC SECTION
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First
Component
After Pump
Hydraulic
Tank
Pump
Gauge
Tee
Fitting
Flow Control
Valve
Flow
Direction
Flow
Direction
Hose
supplied
by you.
Remove any filler
neck screen.
Outlet
Do not exceed
90% of system
pressure.
Cap after
removing
hose.