Toyota
Dodge Durango
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Brakes » Base brake system » Service procedures
Brake tube flaring

A preformed metal brake tube is recommended and preferred for all repairs. However, double-wall steel tube can be used for emergency repair when factory replacement parts are not readily available.

Special bending tools are needed to avoid kinking or twisting of metal brake tubes. Special flaring tools are needed to make a double inverted flare or ISO flare (Fig. 12).

DOUBLE INVERTED FLARING

(1) Cut off damaged tube with Tubing Cutter.

(2) Ream cut edges of tubing to ensure proper flare.

(3) Install replacement tube nut on the tube.

(4) Insert tube in flaring tool.

(5) Place gauge form over the end of the tube.

(6) Push tubing through flaring tool jaws until tube contacts recessed notch in gauge that matches tube diameter.

(7) Tighten the tool bar on the tube (8) Insert plug on gauge in the tube. Then swing compression disc over gauge and center tapered flaring screw in recess of compression disc (Fig. 13).

Fig. 12 Inverted Flare And ISO Flare Fig. 12 Inverted Flare And ISO Flare

1 - ISO-STYLE FLARE

2 - DOUBLE INVERTED-STYLE FLARE

(9) Tighten tool handle until plug gauge is squarely seated on jaws of flaring tool. This will start the inverted flare.

(10) Remove the plug gauge and complete the inverted flare.

Fig. 13 Inverted Flare Tools Fig. 13 Inverted Flare Tools

ISO FLARING

To make a ISO flare use Snap-Ont Flaring Tool TFM-428 or equivalent.

(1) Cut off damaged tube with Tubing Cutter.

(2) Remove any burrs from the inside of the tube.

(3) Install tube nut on the tube.

(4) Position the tube in the flaring tool flush with the top of the tool bar (Fig. 14). Then tighten the tool bar on the tube.

(5) Install the correct size adaptor on the flaring tool yoke screw.

(6) Lubricate the adaptor.

(7) Align the adaptor and yoke screw over the tube (Fig. 14).

(8) Turn the yoke screw in until the adaptor is squarely seated on the tool bar.

Fig. 14 ISO Flaring Fig. 14 ISO Flaring

1 - ADAPTER

2 - LUBRICATE HERE

3 - PILOT

4 - FLUSH WITH BAR

5 - TUBING

6 - BAR ASSEMBLY

    More about «Service procedures»:

    Brake fluid level

    Master cylinder bleeding

    Base brake bleeding

    Disc rotor machining

    Brake drum machining

    Brake tube flaring

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