Overhaul

FRONT DISC BRAKE


Disassembly and Assembly












DISASSEMBLY
1. Remove sliding pin bolts, and then remove the pads, shims, shim cover, and pad retainers from the torque member.
2. Remove sliding pins and sliding pin boots from torque member.





3. Place a wooden block as shown, and blow air from union bolt hole to remove pistons and piston boots.

CAUTION:
Do not get your fingers caught in piston.





4. Remove piston seals from cylinder body, using a suitable tool.

CAUTION:
- Be careful not to damage cylinder inner wall.
- Do not reuse piston seals.
5. Remove the bleeder valve and cap.

CALIPER INSPECTION

Cylinder Body
Check inside surface of cylinder for score, rust, wear, damage or foreign materials. If any of the above conditions are observed, replace cylinder body.
Minor damage from rust or foreign materials may be eliminated by polishing surface with a fine emery paper.
Replace cylinder body if necessary.

CAUTION:
Use new brake fluid for cleaning. Do not use mineral oils such as gasoline or kerosene.

Torque Member
Check for wear, cracks, and damage. If damage or deformation is present, replace the affected part.

Piston
Check piston for score, rust, wear, damage or presence of foreign materials. Replace if any of the above conditions are observed.

CAUTION:
Piston sliding surface is plated, do not polish with emery paper even if rust or foreign materials are stuck to sliding surface.

Sliding Pins, and Sliding Pin Boots
Check sliding pin and sliding pin boot for wear, damage, and cracks. If damage or deformation is present, replace the affected part.

CAUTION:
Trailing/upper sliding pin must be replaced at each service.

ASSEMBLY

CAUTION:
Do not use NISSAN Rubber Grease (KRE00 00010, KRE00 00010 01) when assembling.
1. Install the bleeder valve and cap.





2. Apply Molykote M-77 grease to new piston seals and insert seals into grooves on cylinder body.

CAUTION:
Do not reuse piston seals.





3. Apply Molykote M-77 grease to piston boots. Cover the piston ends with piston boots, and then install cylinder side lip on piston boots securely into the grooves on cylinder body.

CAUTION:
Do not reuse piston boots.





4. Apply clean brake fluid to pistons, then install pistons into cylinder body and insert piston boot side lip into groove of pistons as shown.

CAUTION:
Press the pistons evenly to prevent damage to cylinder wall.
5. Apply rubber grease and insert into cylinder body by hand and insert piston boot piston-side lip into piston groove.

CAUTION:
Press pistons evenly and vary the pressing point to prevent cylinder inner wall from being rubbed.
6. Apply rubber grease and install sliding pins, bushing and sliding pin boots to torque member.
7. Install the pads, shims, shim cover, and pad retainers from the torque member.
8. Install cylinder body. Tighten sliding pin bolts to the specified torque.