Dacia SuperNova (engine E7J). Service manual — part 80
MECHANICAL ELEMENTS CONTROL
37
BRAKE PRESSURE CONTROLLER
NOTE
The brake pressure controller is not to be repaired.
DISMOUNTING
Drain the circuit, recover the fluid;
Detach the four connections (1) of the rigid pipes.
Dismount the two M6 attachment screws of the pressure controller support on the floor (2).
Remove the support together with the pressure controller from the fixing clips.
Dismount the pressure controller off the support.
REMOUNTING
Mount the pressure controller attachment screws on the support.
Attach the support-pressure controller assembly on the floor.
Mount :
- control lever
- the four connection screws of the brake pipes
Purge the braking circuit and adjust the pressure controller.
37 - 17
TIGHTENING MOMENTS (daNm)
Pressure controller attachment screws on support
0,58 daNm
Pipe tightening connection screws to the pressure controller
1,5 daNm
MECHANICAL ELEMENTS CONTROL
37
ADJUSTMENT OF THE BRAKE PRESSURE CONTROLLER FOR
THE PARALLEL BRAKING SYSTEM
Conditions :
- the vehicle on wheels
- empty trunk
- one person on board
ADJUSTMENT
Mount the flexible connection of the FR 501 device at the purging screw of one rear wheel cylinder.
Purge the manometer.
Push the brake pedal to enable reading several times the limiting pressure obtained on the rear
wheels cylinders.
Unscrew the adjustment nut (A) to distance it from the pushing rod end (B).
Act upon the rod end (B):
- by unscrewing it towards the pushing rod (C) in order to increase the pressure in the rear circuit
- by screwing it towards the pushing rod ( C ) in order to decrease the pressure in the rear circuit.
Tighten at the required moment ( 0,35 daNm ) the adjustment nut ( A ) next to the pushing
rod end ( B ) so that between the lever end and the lever ( D ) a clearance of L = 0,5 mm to be
ensured.
Check several times the limiting pressure obtained on the rear wheels cylinders : 30
+0
bar.
Dismount the manometer and purge the braking circuit.
For the purging of the hydraulic circuit and the pressure control, the FR 501 device is
to be used.
37 - 18
- 2
BRAKE PRESSURE CONTROLLER
MECHANICAL ELEMENTS CONTROL
37
The working principle of this control is similar to the one of a brake control, having the same
working fluid : SAE J 1703 DOT 4.
TRANSMITTER CYLINDER REPLACEMENT
DISMOUNTING
Disconnect the battery.
Drain the clutch control hydraulic circuit ; for this purpose, open the purging connection and
connect to this a transparent hose for draining.
Dismount :
- dashboard lower part ;
- the feeding pipe 1 with brake fluid from the reservoir;
- the hydraulic pipe of the transmitter cylinder 2.
Detach the cylinder rod from the control pedal bolt (dismounting effort : min 5 daNm).
Dismount the transmitter cylinder 3 as follows: by means of 24 mm wrench, rotate the
transmitter cylinder from the right to the left aprox. 45 ° and extract the cylinder ( dismounting
moment : min 0.2 daNm ).
37 - 19
CLUTCH HYDRAULIC CONTROL
MECHANICAL ELEMENTS CONTROL
37
CLUTCH HYDRAULIC CONTROL
37 - 20
REMOUNTING
Perform the dismounting operations in the reverse order ;
- transmitter cylinder mounting moment on the support – max 0.5 daNm
- cylinder rod mounting moment on the pedal bolt – max. 5.0 daN
Refill the brake fluid reservoir and purge the clutch control circuit by means of the purging
connection.
Adjust the level in the brake fluid reservoir.
Attention
When remounting the feeding pipe at the brake fluid reservoir and at the
transmitter cylinder, observe the positioning markings.
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