Nissan Sentra Service Manual: Brake booster
Inspection
Operation
Depress the brake pedal several times at five second intervals with the engine stopped. Start the engine with the brake pedal fully depressed. Check that the clearance between brake pedal and dash lower panel decreases.
NOTE:
A slight impact with a small click may be felt on the pedal when the brake pedal is fully depressed. This is normal brake system operation.
Vacuum Inspection
Idle the engine for one minute to apply vacuum to the brake booster.
Stop the engine. Depress the brake pedal several times at five second intervals until the accumulated vacuum is released to atmospheric pressure. Check that the clearance between brake pedal and dash lower panel gradually increases (A → B → C) each time the brake pedal is depressed during this operation.
Depress the brake pedal with the engine running. Then stop the engine while holding down the brake pedal. Check that the brake pedal stroke does not change after holding down the brake pedal for 30 seconds or more.
NOTE:
A slight impact with a small click may be felt on the pedal when the brake pedal is fully depressed. This is normal brake system operation.
Brake master cylinder
Inspection
Check for brake fluid leakage at the following areas:
Master cylinder mounting face
Reservoir tank mounting face
Brake tube and brake tube connections
Brake hose and brake hose ...
Front disc brake
BRAKE PAD
BRAKE PAD : Inspection
PAD WEAR
Check brake pad thickness from an inspection hole on caliper body.
Check using a scale if necessary
Wear limit thickness : Refer to BR-55, "Front ...
Other materials:
Precaution for supplemental restraint system (srs) "air bag" and "seat belt
pre-tensioner"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
driver and front passenger for certain
types of collision. Information necessary to service the system ...
Fuel injector
Component Function Check
1.INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
YES >> GO TO 2.
NO >> Proceed to EC-450, "Diagnosis Procedure".
2.CHECK FUEL INJECTOR FUNCTION
With CONSULT
Start engine.
Perform “POWER BALANCE” in Р...
Precaution for Work
When removing or disassembling each component, be careful not to damage
or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.
When removing (disengaging) components with a screwdriver or similar
tool, be sure to wrap the component
with a ...
