jcb ROBOT 150, Service Manual

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Some attachments are hydraulically powered. The following
paragraphs describe how to connect and disconnect the
hydraulic hoses safely.
! !
WARNING
Hydraulic Pressure
Hydraulic fluid at system pressure can injure you. Before
disconnecting or connecting hydraulic hoses, stop the
engine and operate the controls to release pressure
trapped in the hoses. Make sure the engine cannot be
started while the hoses are open.
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Connecting the Hoses
1
Stop the engine. When the engine has stopped turn the
starter key to IGN.
2 Relieve system pressure as follows: operate the Auxiliary
Attachment Control Switch or the Auxiliary Attachment
Detent Switch for a short time to relieve residual
pressure in the hydraulic circuit.
Turn the starter key to OFF and remove the key.
This will release any hydraulic pressure trapped in the
hoses.
3 Connect the hoses. See Connecting Quick Release
Couplings on page 1 - 1.
! !
WARNING
Fine jets of hydraulic fluid at high pressure can penetrate
the skin. Do not use your fingers to check for hydraulic
fluid leaks. Do not put your face close to suspected
leaks. Hold a piece of cardboard close to suspected
leaks and then inspect the cardboard for signs of
hydraulic fluid. If hydraulic fluid penetrates your skin, get
medical help immediately.
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4 Check for leaks as follows:
a Start the engine.
b Operate the Auxiliary Control Switch. This will build
up pressure in the hoses.
c Switch off the engine. Remove the starter key. Check
for signs of leakage at the hose connections.
Disconnecting the Hoses
1 Carry out steps 1 and 2 of connecting the hoses.
2 Disconnect the hoses. See Connecting/Disconnecting
Quick Release Couplings on page 1 - 1.
! !
WARNING
Fine jets of hydraulic fluid at high pressure can penetrate
the skin. Do not use your fingers to check for hydraulic
fluid leaks. Do not put your face close to suspected
leaks. Hold a piece of cardboard close to suspected
leaks and then inspect the cardboard for signs of
hydraulic fluid. If hydraulic fluid penetrates your skin, get
medical help immediately.
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3 Check for leaks. See step 4 of Connecting the Hoses .
Section A
Optional Attachments
9803/8500
Section A
2 - 1
Issue 1
Connecting/Disconnecting Hydraulic Hoses