Nissan Sentra Service Manual: Brake master cylinder
Exploded View

- Reservoir cap
- Oil strainer
- Reservoir tank
- Cylinder body
- Pin
- O-ring
- Grommet
Apply brake fluid
PBC (Poly Butyl Cuprysil)
grease or
silicone-based grease
Removal and Installation
REMOVAL
CAUTION:
- Do not spill or splash brake fluid on painted surfaces. Brake
fluid may damage paint. If brake fluid is
splashed on painted areas, wash it away with water immediately.
- Do not scratch the piston of master cylinder when
installing/removing because the piston is
exposed. Check for any dust on the piston, and wash with brake fluid if
needed.
- Hold the master cylinder body when handing the master cylinder
assembly. Do not hold the piston
because the piston might become detached if pulled strongly.
- Refill the reservoir tank with new brake fluid “DOT 3”.
- Do not reuse drained brake fluid.
- Do not reuse master cylinder O-ring.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug
openings to prevent fluid from spilling.
- Partially drain brake fluid. Refer to BR-17, "Drain and Refill".
- Disconnect the harness connector from the brake fluid level switch.
- Remove air duct and air cleaner case. Refer to EM-25, "Removal and
Installation".
- Remove the engine room insulator and position aside.
- Separate the brake tube from master cylinder assembly with a suitable
tool.
CAUTION:
Do not scratch the flare nut and the brake tube.
- Disconnect the clutch hose (if equipped).
- Remove the master cylinder assembly.
CAUTION:
- Do not deform or bend the brake tubes.
- Do not depress the brake pedal after the master cylinder assembly
is removed.
- The piston of the master cylinder assembly is exposed. Do not
damage the piston when removing
the master cylinder.
- The piston may drop off when pulled out strongly. Do not hold the
piston. Hold the cylinder body
when handling the master cylinder assembly.
- Remove and discard the O-ring.
CAUTION:
Do not reuse O-ring.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not reuse O-ring.
- Apply PBC (Poly Butyl Cuprysil) grease or equivalent to the brake
booster (A) when installing the master cylinder assembly to the
brake booster.

- Temporarily tighten the brake tube flare nut to the master cylinder
assembly by hand. Then tighten it to the
specified torque.Refer to BR-25, "FRONT : Exploded View".
- Perform the air bleeding. Refer to BR-17, "Bleeding Brake System".
FRONT
FRONT : Exploded View
Brake tube
ABS actuator and electric unit (control
unit)
Connector
Connector bracket
Master cylinder assembly
Brake booster
Lock plate
Brake hose
...
Exploded View
Master cylinder assembly
Brake booster
Lock nut
Clevis
Gasket
Spacer
Removal and installation
REMOVAL
Remove cowl top and cowl top extension. Refer to EXT-26, ...
Other materials:
C1601 Battery power supply
DTC Logic
DTC DETECTION LOGIC
DTC
Display item
Malfunction detected condition
Possible cause
C1601
BATTERY VOLT
When a power supply voltage to the EPS control unit
is maintained at 17.5 V or more or at less than 9 V
continuously for five second or more.
...
Cooling fan control
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant
temperature, refrigerant pressure,
air conditioner ON signal. Then control system has 3-step control
[HIGH/LOW/OFF].
Cooling Fan Operation
Cooling Fan Relay Operation
Whe ...
Seat belt buckle switch signal circuit
Description
Transmits a seat belt buckle switch lh (driver seat) signal to the
combination meter
Component function check
1. Check combination meter input signal
Select data monitor for meter/m&a and check the buckle sw monitor value.
YES >> Inspection End.
NO >> Refe ...
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