Differential Pressure Switch; Description - JLG Lull 1044C-54 II Series Service Manual

Differential Pressure Switch

Description

31200079
18. Lubricate counterbalance valve cartridges O-rings with clean hydraulic
oil.
19. Install cartridges in the manifold block.
20. Lubricate a new O-ring with hydraulic oil and install it inside the piston
(seals rod to piston).
21. Lubricate new seal and wear rings with hydraulic oil and install them on
the piston.
22. Slide the cylinder head (Item 16), and piston (Item 11) onto the rod
(Item 15). Lubricate the threads on the rod with hydraulic oil and install
the rod nut (Item 10).
23. Install the rod assembly in the cylinder barrel. Tighten the cylinder cap
and secure with a setscrew (Item 17).
24. Install two (2) elbows (Item 7) on the cylinder manifold block. Torque
the elbows to 40–44 ft-lbs.
25. For models with an O-ring plug (Item 5), install the plug in the control
manifold block. Torque the plug to 85–95 ft-lbs.
26. Install the differential pressure switch (Item 6) on the cylinder manifold
block.
The differential pressure switch is a cartridge-style switch with a maximum
operating pressure of 6000 psi. It is a normally open circuit that is set to
close at 92 psi (+0, -18 psi).
Outriggers
10-9