mecalac 14 MBX, Handbook Of Repair

Page: 67 / 82

14.4.2 Adjusting the
∆
P of the equipment without
adjusting the power regulation (F.R. valve)
Warning: Take great care when removing the
controller, as the chamber for the ram subject
to the controller may be under pressure.
Place the equipment on the ground, stop the
engine, make the contact and cancel any
residual pressure by activating the keys in all
directions.
1- Remove the anti-shock controller (1 fig. 1) (small
chamber of the dipper ram).
2- Raise the regulation controller into its position.
Ref = E536A0018 (taring at 50 bars).
3- With engine in maximum regime, set the selector to
MECALAC 1 and pull the left key towards the back
(blocked position) to allow the oil to circulate .
4- Measure the difference in pressure between
(2 fig. 1) and (3 fig. 1) using the two manometers.
5- Loosen the lock nut and turn the screw (1 fig. 2)
clockwise in order to increase the
∆
P .
30750 14MBX
M1 65
13 and 30 flat spanners
4 male hexagonal spanner
2 manometers, 0-600 bars
MECALAC 1
MECALAC 2
Fig. 1 SX18 valve block
Fig. 2 Equipment pump
Operation
Pressure
(bars)
Measurement
(ref. no.)
Adjustment
(ref. no.)
∆
P of equipment 15 (+ 1 - 1) 2 fig. 1 and 3 fig. 1 1 fig. 2
1
2
3
1