BARKO LOADERS 295, Service Manual

Page: 30 / 85

page 30
295 AC
800-00158
Pilot
Filter
K170 UPPER VALVE BANK ADJUSTMENTS
NOTE: The Pilot Filter must be removed and cleaned every 1000 hours.
Main Relief - 4000 PSI non-adjustable.
Pilot Relief - 450 to 500 PSI non-adjustable.
Port Reliefs for all boom and swing functions are non-adjustable.
Grapple functions are equipped with adjustable feed reducers.
- Pressures to the grapple open and close functions should not exceed 2500 PSI.
- Pressures to grapple rotate functions should not exceed 1500 PSI.
To adjust, install a gauge on the load sense test port located on the tee on pump #1. Remove the
acorn nut and loosen the jam nut (13 mm wrench). Using a 4 mm Allen wrench, turn the adjustment
screw out (counterclockwise) to lower the pressure or in (clockwise) to raise pressure.
Pilot Relief
(pressure reducing
valve)
Load
Sense
Pressure
Port
(PL)
Pump
Pressure
Test Port
(PX)
K170 UPPER VALVE BANK
Counter
Pressure
Valve
Port Reliefs
(non-adjustable)
Feed
Reducers
Outlet Cover
(with pressure in)
Counter
Pressure
Valve
Feed
Reducers
Rotate
Stick
Swing
O/C
Main
Inlet Cover
Port Reliefs
(non-adjustable)
Main Relief
(non-adjustable)
Main Relief
(non-adjustable)
A
B
A
B
A
B
A
B
A
B
A
B
A
B
HYDRAULIC PRESSURE ADJUSTMENTS CONTINUED...
(FOR MODEL 295 AC)
Load Sense Pressure
Test Port
(on pump #1)
Pilot
Supply
Port
Active Fill
Cartridge
Pump #1
Pump #2