Attention! Brake pads are always replaced as a set - four pieces are not both wheels of the same axle. Never change pads on more than one wheel, causing uneven braking. Never inhale pad dust - it may contain carcinogenic asbestos. Wear a dust mask when working on the brakes. For cleaning and flushing, do not use gasoline - only the solvent or methyl alcohol provided for this.
Note: After any loosening of the guide pin mounting bolts, the bolts must be replaced.
1. Place wedges under the front wheels, engage reverse gear (or "R" in case of automatic transmission). Raise the rear of the vehicle and install jack stands (see Jacking up the vehicle and installing jack stands). Remove rear wheels. When removing the wheels, wrap one bolt into the hubs so that the brake discs do not move relative to the hub.
2. As described in paragraph 15, release the handbrake lever and release the handbrake cable adjustment to obtain maximum slack in the cables and ensure both caliper operating levers are fully retracted.
3. Remove the top and bottom guide pin bolts while holding them with an open end wrench (pic. 5.3). New bolts are required for installation.
4. Remove the caliper from the mounting bracket. Tie the caliper to the strut with wire so as not to stress the brake hose (pic. 5.4, a, b).
5. Remove pads (pic. 5.5, a, b).
6. First measure the thickness of the friction material (rice. 4.9). If any pad is damaged or has unacceptable wear (see specification), replace the entire set of pads so as not to disturb the balance of the brakes. The pads should also be replaced. if at least one of them is oiled, there is no satisfactory way to remove oil from the friction material without changing its structure. If at least one pad has been oiled, find the cause and correct it before installing a new set of pads. A set of pads can be purchased from your dealer.
7. If the pads look good, use a soft wire brush to remove any dirt from the pads, paying special attention to the back and sides. Clean the grooves in the friction material, remove foreign inclusions. Clean the seats in the caliper and bracket.
8. Before installing the pads, make sure that the bushings of the guide racks move easily and that their protective covers are intact. Remove dust from the caliper and piston with a brush. but do not inhale it - it may contain carcinogenic asbestos dust. Check that the piston boots are intact and that there are no leaks, corrosion, or other damage to the pistons. If these components require attention - see paragraph 9.
9. If you install new pads, the piston must be sunk into the caliper flush with its surface. This can be done by turning the piston clockwise with a suitable screwdriver at the notches in the piston (pic. 5.9). Watch the liquid level in the reserve tank - if it exceeds the MAX mark, the liquid must be pumped out by the siphon method - not by mouth (the liquid is poisonous) - with a syringe or hydrometer, or by connecting the hose to the bleeder (see paragraph 4 item 12).
10. If provided, pull off the protective film from the pads and install the pads with friction material against the disc.
11. Put the caliper on the brake pads so that the anti-creak springs correctly rest against the inner surface of the caliper, do not pinch and protrude into the control hole of the bracket.
Note: New guide pin bolts are required for installation.
12. Press the bracket, insert new guide bolts and tighten them to the prescribed torque, holding the guide pins with an open-end wrench.
13. Repeat all of this with another caliper.
14. Press several times a brake pedal that blocks have taken a working position. Once you feel normal "hardness" pedals, pressing can be stopped.
15. Install the wheels and lower the vehicle. Tighten the wheel bolts to the specified torque - see chapters 1A or 1B.
16. Check the brake fluid level as described in weekly checks. Adjust the handbrake.
Warning.' If new pads have been installed, full brake performance will not be achieved until after several hundred kilometers - the pads should rub against the disc. Avoid sudden braking during this period.
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