53
ADJUSTMENTS & PROCEDURES
WITH OPTIONAL SIDE SCRUB
NAULTILUS DUAL CONTROLLER ADJUSTMENT FOR MAIN SCRUB BRUSH AND
OPTIONAL SIDE SCRUB BRUSH FLOOR PRESSURE ADJUSTMENT.
Before the scrub head floor pressure adjustment can be performed the reduction valve at the main hydraulic manifold port 4.1 must
be adjusted to 450 psi (The purpose of this valve is to change the variable inlet pressure (approximately 700 psi) to a constant
output pressure of 450 psi which is applied to the piston-end of the scrub head lift cylinder. 450 psi is the pressure required to raise
the scrub head at full engine rpm).
If this valve has already been adjusted go to “Setting the scrub brush floor pressure controller”.
To adjust the reduction valve at port 4.1:
•Install a tee fitting with a gauge port between the main hydraulic hose and the hydraulic manifold at port BLA.
•Attach a suitable hydraulic pressure gauge to the gauge port in the tee fitting.
•Zero the pressure gauge if necessary.
•Loosen the lock nut on the adjustment stud on the reduction valve located on the main hydraulic manifold at port 4.1
•Insure that the green “One-Touch” switch is in the off position.
•Start the engine
•Set the throttle switch to high.
•Turn the reduction valve adjustment stud clockwise until the pressure gauge reads 450 psi.
(Note: It is not possible to attain 450 psi if the restrictor orifice fitting is not installed at the power steering unit pressure port.)
•Tighten the reduction valve locknut.
•Verify the pressure reading.
•Turn off the engine.
•Replace the hydraulic hose at port BLA.
Содержание Nautilus Hi-Dump PB45HDSL
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