Nissan Maxima Service and Repair Manual: Rear disc brake

Disassembly and Assembly

1. Union bolt
2. Brake hose
3. Copper sealing washer
4. Cap
5. Bleed valve
6. Lower sliding pin bolt
7. Upper sliding pin bolt
8. Bushing
9. Cylinder body
10. Piston seal
11. Piston
12. Piston boot
13. Retaining ring
14. Sliding pin boot
15. Torque member bolt
16. Washer
17. Torque member
1.  Molykote AS-880N grease
2.  Brake grease
3. Brake fluid

NOTE: Do not remove the torque member, pads, shims, shim covers, and pad retainers when disassembling and assembling the cylinder body.

DISASSEMBLY

1. Remove the sliding pin bolts, and then remove the cylinder body from the torque member.
   CAUTION: Do not drop pads, shims, shim cover and pad retainers from torque member.
2. Remove the sliding pin boots from the torque member.
3. Remove the cap and the bleed valve from the cylinder body.

4. Remove the retaining ring from the cylinder body using a suitable tool as shown. Discard the retaining ring.
   CAUTION: Do not reuse the retaining ring.

5. Place a wooden block in the cylinder body and blow air through the union bolt hole to push out the piston and piston boot as shown. Discard the piston boot. WARNING: Do not get fingers caught between the piston and cylinder body.

   CAUTION: Do not reuse the piston boot.

6. Remove the piston seal from the cylinder body using a suitable tool as shown. Discard the piston seal.

CAUTION:

• Be careful not to damage the inner cylinder wall.
• Do not reuse the piston seal.

INSPECTION AFTER DISASSEMBLY

Cylinder Body

Check the inner cylinder wall for corrosion, wear, and damage. If a defect is detected, replace the cylinder body.

CAUTION: Clean the cylinder body using new brake fluid. Do not use mineral oils such as gasoline or kerosene.

Torque Member

Check the torque member for wear, cracks, and damage. If a defect is detected, replace the torque member.

Piston

Check the piston surface for corrosion, wear, and damage. If a defect is detected, replace the piston.

CAUTION: The piston sliding surface is plated. Do not polish the piston with sandpaper.

Sliding Pin Bolt and Sliding Pin Boot

Check the sliding pin bolt and sliding pin boot for wear, damage, and cracks. If a defect is detected, replace the components as necessary.

ASSEMBLY

1. Apply rubber grease to the new piston seal, and install it in the cylinder body.
   CAUTION: Do not reuse piston seal.

2. Apply rubber grease to the new piston boot and brake fluid to the piston. Cover the piston end with the piston boot, and then install the cylinder side lip on the piston boot securely into the groove on the cylinder body.
   CAUTION: Do not reuse piston boot.

3. Push the piston into the cylinder body by hand and push the piston boot piston-side lip into the piston groove.
   CAUTION: Press the piston evenly and vary the pressing point to prevent cylinder inner wall from being rubbed.

4. Secure piston boot with retaining ring.

CAUTION:

• Make sure that boot is securely engaged in the groove on cylinder body.
• Do not reuse retainer ring.

6. Install the bleed valve and cap to the cylinder body.
7. Install the sliding pin boots and bushing on the torque member.
8. Install the cylinder body to the torque member, and then tighten the sliding pin bolts to the specified torque.