Commissioning 45/60
RE 91616-01-B/10.2014, A6VE Series 65 and 71,
Bosch Rexroth AG
8.4 Integrated counterbalance valve (BVI) – Brake release
function lock/unlock
wARnInG
Risk of damage to persons and equipment!
Insufficient unlocking of the brake release valve can cause damage to/destruction
of the parking brake and associated piping and thus hazard persons or equipment.
Hydraulic fluid can escape.
▶
Apply the locking function for the brake release valve only for commissioning/
servicing purposes of the machine/system and only through trained trade
personnel.
▶
After the use of the locking function check the correct screw-in depth of the
threaded pin. Observe to this the details below.
With the integrated counterbalance valve (BVI) including brake release valve with
locking function it is possible to block the brake release function for commissioning/
servicing purposes of the machine/system. Settings at the brake release valve
are not intended for the regular braking operation and may only be carried out by
trained trade personnel. Other settings as those details mentioned below are not
permissible.
1
X
2
Fig. 15: Integrated counterbalance valve with brake release valve
1.
Loosen the lock nut (
2
) and screw the threaded pin (
1
) in as far as it will go.
2.
Retighten the lock nut (
2
) (tightening torque 10 Nm).
Make sure, that the brake release valve is brought back again in a functioning
condition after the use of the locking function. Proceed as follows:
1.
Loosen the lock nut (
2
) and unscrew the threaded pin (
1
) to the dimension
X = 18.5
+1
mm.
2.
Retighten the lock nut (
2
) (tightening torque 10 Nm).
lock brake release
function
Unlock brake release
function
