MAINTENANCE
28
9/215 9/230 9/255 9/300 10/170 12/170 12/235 17/235 21/215
HP600 VHP600 XP750 XP800 VHP825 XP900 XP1060 XHP760 XHP825
17/235 21/215
XHP825 XHP760
SPEED AND PRESSURE REGULATION ADJUSTMENT
17/235 21/215
Normally, regulation requires no adjusting, but if correct adjustment
is lost, proceed as follows:
Refer to the diagram above.
With the unit stopped, disconnect ballast spring ‘A’ and unclip the
ball joint ‘B’ from the butterfly lever. Loosen the two screws securing
bracket ‘C’ to main bracket ‘J‘.
Loosen screw ‘D‘ and rotate the butterfly valve pivot shaft ‘K‘ fully
clockwise until the valve is closed. Position lever ‘L‘ approximately 10
°
after vertical and tighten screw ‘D‘.
Keep the butterfly lever in the closed position and with the the air
cylinder fully contracted tighten the screws holding bracket ‘C’ to the
main bracket ‘J‘.
Allow the cylinder to return to its extended position and reconnect
the ballast spring ‘A‘ and the control cable ball joint ‘B‘.
IMPORTANT: Ensure all components are aligned and move freely.
Start engine: Note receiver pressure. Warm up pressure should be
3,5–5,0 bar (50–70 p.s.i.).
To increase the warm up pressure, turn the air cylinder rod in an
anti–clockwise direction to open the butterfly valve.
To reduce warm up pressure, turn air cylinder rod in clockwise
direction to close butterfly valve.
When the engine is warmed up, press the ‘Load’ button ‘H‘ to
commence normal regulation.
Set pressure by adjusting the screw ‘E’ on the pressure regulator
‘F’. Turn the screw clockwise to increase pressure and anticlocwise to
reduce pressure.
With the machine at unloaded pressure set idle speed using cable
locknuts ‘G’.
To adjust top speed ensure the machine is running in a loaded
condition.
To increase speed screw ball joints at the ends of the cable
outwards.
