B - Ardiehl.de

DUAL PRESSURE MAIN RELIEF VALVE – 853H
(Cont’d)
Adjusting the High Setting
NOTE: Adjust the low pressure setting before
adjusting the high pressure setting.
Correct pressure for the high setting is 3000 PSI (20685
kPa). (See Page 2–23) for the correct procedure to check
the setting.
To adjust the high pressure setting on the main relief valve
(Item 1) [A] disconnect the pilot hose (Item 2) [A] from the
adapter fitting (Item 3) [A].
Remove the adapter fitting (Item 3) [A].
Use a 1/4’’ allen wrench (Item 1) [B] to press the push pin
(Item 2) [B] in until it bottoms out.
Turn the adjusting guide (Item 3) [B] in to increase
pressure or out to decrease pressure.
One turn is equal to approximately 390 PSI (2689 kPa).
Reinstall the adapter fitting and pilot hose.
Check for the high pressure setting.
Reconfirm the correct adjustment.
Repeat the adjustment procedure if necessary.
–2–26–
A
B
2 1
3
2
1
Select Valve
(G.E.M Block)
Control Valve
3
E–02232
MC–01654
853, 853H BICS Loader
Service Manual