Tightening torques, Nm
X = 15; Z = 13
Attention! For safety reasons and to prevent the brake hoses from twisting or coming into contact with suspension parts, the following procedure must be followed.
4. Remove the thermostat housing (2 bolts).
5. Remove the vacuum pump (2 bolts, 2 nuts).
6. When replacing the pump, replace the drive pin.
Installation
1. Installation is carried out in the reverse order of removal.
2. Remove air from the brake circuit.
Examination
On a warm engine at 4000 rpm the minimum vacuum should be 700 mbar (525 mm Hg.) within 3 sec.
Removal
1. Loosen the union nut 1 (union wrench), connecting the tube and hose 2, so that the spring 3 is completely released, which would make it possible to remove the tip of the hose from the splined hole 4.
2. Remove the hose from the brake caliper and remove the brake caliper if necessary.
Installation
1. Install the caliper onto the brake mechanism and screw the hose into the hole on the brake caliper.
2. Then tighten the hose tip to 15 Nm.
The brake lines are installed with the axle in place:
- wheels are installed (suspension in place);
- the bridge is leveled (steered wheels in straight ahead position).
3. Fasten the hose nipple to bracket 5 without twisting the hose and check that tip 4 fits freely into the splined hole of the bracket.
4. Install spring 3.
5. Install the tube onto the hose, making sure that the hose does not twist when screwing the tube onto the hose.
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6. Tighten the union nut to the required torque.
7. Remove air from the brake circuit.