Front Brake Pads

Brake Pads Front, Replacement

Special Tools: 115 8147

Minimum thickness
Replacement point = 3.0 mm (0.12 inches)

Preparations
Remove wheel.

Removing brake caliper and brake pads







- Remove retaining spring (3) carefully to avoid deforming it.
- Remove protective caps (1) from the two locating pins (2).
- Remove both locating pins, using 7 mm (0.276 inches) hexagonal socket.
- Remove brake caliper carefully from mounting so as not to damage brake hose.
- Remove brake pads.
- Suspend brake caliper from a steel wire in front spring to avoid damaging hose.

NOTE: Do not depress brake pedal while brake pads are removed.

Cleaning and checking







- Clean brake pad contact surfaces in brake caliper and on caliper mounting.
- Check piston dirt guard.
- If dirt guard looks worn, replace it as a precautionary measure.
- If dirt guard is damaged, overhaul brake caliper.

NOTE: If dirt guard is damaged, dirt may have penetrated into the cylinder and so the brake caliper needs to be overhauled.

Checking brake disc







- Check brake disc friction surface.
- If brake disc shows signs of being skew, check its lateral run-out.
- If brake disc shows signs of major wear, variations in thickness etc., replace it.

NOTE: Disc thickness = replacement point = 23.0 mm (0.9 inches). Minimum recommended disc thickness when installing new brake pads = 23.8 mm (0.94 inches).

Installation of items

Installation of locating pins
- Check locating pin rubber bushings. Replace as necessary
- Grease locating pins with Volvo silicon grease (P/N 1161325-4) and insert them in rubber bushings (4). Pin should slide easily into bushings.

Installation of brake caliper and brake pads







- Push piston back in cylinder on brake caliper.
- Check that dirt guard is positioned correctly.
- Install new brake pads and install brake caliper.
- Tighten locating pins to 30 Nm (22 ft.lb) and install protective caps.
- Install retaining spring (3).

Finishing and checking
- If brake hose was unscrewed, tighten brake hose onto brake caliper to 18 Nm (13 ft.lb)

NOTE: Make sure that hose is not twisted. There is a white line running along the hose which shows if the hose is twisted. Correct at other end of hose if necessary.

- Top up and bleed braking system. Then continue as below.
- Check that there are no leaks and that brakes are working properly.

Checking brake fluid level
- Push brake pedal down a few times.
- Check level in brake fluid reservoir. Top up brake fluid if necessary.

Installation of wheel







- Make sure that brake discs and rin contact surfaces are clean.
- Grease hub center rim guide with anti-rust agent 116 1038-3.
- Install wheel
- Tighten bolts handtight. Then tighten them crosswise to 110 Nm (80 ft.lb) If using air gun, use torque socket 115 8147.

NOTE: Tightening bolts crosswise to a specific torque setting is important in preventing stresses in the brake disc.