Sentra SE-R Spec V L4-2.5L (QR25DE) (2002)
Clutch Master Cylinder: Service and Repair
Disassembly and Reassembly
Disassembly
1. Loosen push rod lock nut "A" to remove clevis and lock nut "A".
2. Remove dust cover.
3. Remove stopper ring and stopper, and remove push rod from cylinder body. During removal, keep push rod depressed, to prevent piston inside
master cylinder from popping out.
4. Remove piston assembly from cylinder body.
5. Remove return spring.
6. Remove pin using pin punch, then remove nipple and seal.
Inspection
Inspect for the following, and replace parts if necessary.
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Damage, wear, rust, and pinholes on the cylinder inner wall
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Damage and deformation of the reservoir tank
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Weak spring
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Crack or deformation of the dust cover
Assembly
1. Install spring.
2. Apply rubber lubricant to the sliding part of piston assembly, and insert piston assembly into cylinder body.
3. After installing stopper to push rod, install stopper ring while keeping piston assembly depressed by hand, so that piston assembly will not pop out.
CAUTION: Stopper ring cannot be reused. Always use a new stopper ring for assembly.
4. Apply silicone grease, and install dust cover.
5. Install clevis to push rod, and tighten lock nut "A" to the specified torque.
: 7.8 - 10.8 Nm (0.8 - 1.1 kgf-m, 69 - 95 inch lbs.)
6. Install seal and nipple to cylinder body, and install pin using a pin punch.