Barko 495B - SE, Service Manual

Page: 38 / 99

Service Manual Last Updated - 9/28/2016
495B SE (S)
38
PUMP ADJUSTMENTS (AA11 SAW PUMP)
ADJUSTING WORKING PRESSURE (2800 PSI) AND STANDBY PRESSURE (425 PSI)
Standby Pressure
Pump Compensator
Max Displacement (Saw Speed) Adjustment
1. Install an electronic (digital) pressure gauge on the
saw pressure test port located next to the pressure
port on the pump.
NOTE: When setting standby pressure, pressure will
spike to approx. 2800 PSI before reading 425 PSI.
This will ruin a 1000 PSI gauge. Use an electronic
(digital) pressure gauge to check standby pressure.
2. Run engine at low throttle with saw OFF.
3. Loosen jam nut on Standby Pressure Adjustment,
with 1/2" wrench.
4. Adjust Standby pressure to 425 PSI by turning
screw in or out with a 5/32" allen wrench.
(turn screw clockwise to increase,
counterclockwise to decrease).
5. Tighten jam nut.
6. Stall saw or plug pressure line.
7. Run engine at full throttle.
8. Turn saw ON.
9. Adjust Pump Compensator Pressure to 2800
PSI by turning screw in or out with a 5/32" allen
wrench. (turn screw clockwise to increase,
counterclockwise to decrease).
10. Tighten jam nut.
11. Turn Saw OFF.
12. Shutdown engine.
13. Unstall saw or replace pressure line.
14. Remove pressure gauge.
The torque control is factory set and generally will not
Minimum Displacement
Adjustment
Torque Control
require adjustment. Turning the screw in (clockwise) will
increase the load on the engine by holding the pumps on stroke at a higher pressure.
SAW SPEED (RPM)
The saw speed can be adjusted using the Max Displacement Adjustment. Turn in to slow saw down and out to