Honda AFRICA TWIN XRV750 (1987-2002) [203/291] 18 brakes wheels and tyres

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7 18 Brakes wheels and tyres 9 2 Flex the brake hoses and check for cracks bulges and leaking fluid Replacement 4 The brake hoses have banjo union fittings on each end with the exception of the front master cylinder hose on XL600V H to L 1987 to 1990 models and XRV75O models which has a hose joint piece and the brake pipes have joint nuts securing them in their unions see illustrations 7 6 and 7 7 Cover the surrounding area with plenty of rags and unscrew the banjo bolt or joint nut at each end of the hose or pipe noting its alignment On the front master cylinder hose on XL600V H to L 1987 to 1990 models and XRV750 models counter hold the hose nut and unscrew the locknut and separate the hose from the hose joint in the caliper see illustration 7 7 If required unscrew the hose joint from the master cylinder Free the hoses pipes from any clips or guides and remove them Discard the sealing washers as new ones must be used 5 Position the new hose making sure it isn t twisted or otherwise strained and abut the tab on the hose union with the lug on the component casting where present Otherwise align the hose or pipe as noted on removal Install the hose banjo bolts using new sealing washers on both sides of the unions Tighten the banjo bolts to the torque setting specified at the beginning of this Chapter 6 Locate the end of the new pipe into its union and tighten the nut securely but not overtight 7 On the front master cylinder hose on XL600V H to L 1987 to 1990 models and XRV750 models if removed thread the joint piece into the master cylinder using a new sealing washer and tighten it securely see illustration 7 7 Fit the hose against the hose joint and tighten the locknut onto the hose counter holding the hose nut to prevent the hose twisting Do not overtighten the locknut 8 Make sure the hoses and pipes are correctly aligned and routed clear of all moving components Flush the old brake fluid from the system refill with new DOT 4 brake fluid see Daily pre ride checks and bleed the air from the system see Section 10 Check the operation of the brakes carefully before riding the motorcycle 10 Brake system bleeding and fluid renewal Bleeding Note Honda recommend using a commercially available vacuum type brake bleeding tool see illustration If bleeding the system using the conventional method does not work sufficiently well it is advisable to obtain a bleeder and repeat the procedure detailed below following the manufacturers instructions for using the tool If the tool is not available take the machine to a Honda dealer 1 Bleeding the brakes is simply the process of removing all the air bubbles from the brake fluid reservoirs the hoses and the brake calipers Bleeding is necessary whenever a brake system hydraulic connection Is loosened when a component or hose is replaced or when the master cylinder or caliper is overhauled Leaks In the system may also allow air to enter but leaking brake 10 5a Brake caliper bleed valve arrowed 10 NOTE Bleeding the brakes using a commercial vacuum operated bleeding tool fluid will reveal their presence and warn you of the need for repair 2 To bleed the brakes you will need some new DOT 4 brake fluid a length of clear vinyl or plastic tubing a small container partially filled with clean brake fluid some rags and a ring spanner to fit the brake caliper bleed valves 3 Cover the fuel tank fairing panels front mudguard and other painted components to prevent damage in the event that brake fluid is spilled 4 Remove the reservoir cover or cap diaphragm plate and diaphragm see Daily pre ride checks and slowly pump the brake lever or pedal a few times until no air bubbles can be seen floating up from the holes in the bottom of the reservoir Doing this bleeds the air from the master cylinder end of the line Loosely refit the reservoir cover 5 Pull the dust cap off the bleed valve see illustration Attach one end of the clear vinyl or plastic tubing to the bleed valve and submerge the other end in the brake fluid in the container see illustration 6 Remove the reservoir cap or cover and check the fluid level Do not allow the fluid level to drop below the lower mark during the bleeding process 10 5b To bleed the brakes you need a spanner a short section of clear tubing and a clear container half filled with brake fluid