Fig. 7.25. Brake hose: A – conical surface of the tip; B – tip nut; C – splined part
Hoses without copper sealing washers are installed on the vehicle. Sealing is achieved by contact of the conical surfaces A (Fig. 7.25) of the hose tip. When replacing or disconnecting the hose (pipelines) take care to reduce the leakage of brake fluid. To do this, place a rag under the work area. Seal the expansion tank by placing a polyethylene circle of the same diameter under its lid, or install a clamp on the tank hose. When disconnecting the hose, plug the holes with pre-prepared plugs. You can also pinch the disconnected hose to isolate part of the brake system circuit.
For safety reasons, to prevent twisting of brake hoses and the possibility of their contact with suspension parts, the following procedure must be followed.
Removal procedure:
Fig. 7.26. Connecting the brake hose to the pipeline: 1 – union nut of the pipeline; 2 – hose; 3 – spring retainer; 4 – splined part of the hose tip; 5 – connection bracket
Fig. 7.27. Unscrewing the nut connecting the hose to the pipeline with a slotted spanner
- loosen the union nut (Fig. 7.26) using a slotted spanner (Fig. 7.27) just enough to release the spring clip;
- remove the splined portion of the hose tip from the splined hole in the bracket;
- if necessary, remove the hose from the front brake caliper.
Installation procedure:
- set the steering wheel to the straight-ahead position;
- lift the front wheel on the desired side until it is off the ground;
- screw the hose into the brake caliper hole and tighten the tip to the specified torque;
- secure the splined hose end to the bracket (see fig. 7.26), without twisting the hose, and make sure that the tip fits freely into the slotted hole of the bracket;
- install the spring retainer;
- connect the pipe to the hose, making sure that the hose does not twist when screwing on the union nut. Tighten the union nut to the specified torque;
- remove air from the hydraulic brake system.
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