Valve Adjustments - Function Manifold; How To Adjust The System Relief Valve; How To Adjust The Boom Down Relief Valve - Terex Genie S-40 Service And Repair Manual

Service and Repair Manual
Manifolds
7-2 Valve Adjus tments - F unc tion M anifol d
7-2
Valve Adjustments -
Function Manifold
How to Adj ust the Sy stem Reli ef Valve
How to Adjust the System Relief
Valve
Note: Perform this procedure with the machine in
the stowed position.
Note: Refer to Function Manifold Component list to
locate the system relief valve.
1 Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to the test port on the function
manifold.
2 Start the engine from the ground controls.
3 Press and hold the function enable button.
Activate and hold the primary boom retract
switch with the boom fully retracted.
4 Observe the pressure reading on the pressure
gauge. Refer to Specifications, Hydraulic
Component Specifications.
5 Turn the engine off. Use a wrench to hold the
relief valve and remove the cap.
6 Adjust the internal hex socket. Turn it
clockwise to increase the pressure or
counterclockwise to decrease the pressure.
Install the relief valve cap.
Tip-over hazard. Do not adjust
the relief valve higher than
specified.
7 Repeat this procedure beginning with step 2 to
confirm the relief valve pressure.
8 Remove the pressure gauge.
50
How to Adj ust the Boom Dow n R elief Valv e
How to Adjust the Boom Down
Relief Valve
Note: Perform this procedure with the machine in
the stowed position.
Note: Refer to the Function Manifold Component
list to locate the Boom Down relief valve.
1
2
3
4
5
6
Repeat this procedure beginning with step 2 to
confirm the relief valve pressure.
7
S-40 • S-45 • S-40 TRAX • S-45 TRAX
Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to the LS test port of the
function manifold.
Start the engine from the ground controls.
Press and hold the function enable button.
Activate and hold the primary boom down
switch with the boom in a fully stowed position.
Observe the pressure reading on the pressure
gauge. Refer to Specifications, Hydraulic
Component Specifications.
Turn the engine off. Use a wrench to hold the
relief valve and remove the cap. Refer to
Repair Procedures, Function Manifold
Components, item BD.
Adjust the internal hex socket. Turn it
clockwise to increase the pressure or
counterclockwise to decrease the pressure.
Install the relief valve cap.
Tip-over hazard. Do not adjust
the relief valve higher than
specified.
Remove the pressure gauge.
September 2016
Part No. 1268491