NISSAN ALMERA 2001 Service Manual

SBR938A
DisassemblyNJBR01131. Bend claws of stopper cap outward and remove stopper cap.
SBR231C
2. Remove valve stopper while piston is pushed into cylinder.
3. Remove piston assemblies.
If it is difficult to remove secondary piston assembly,
gradually apply compressed air through fluid outlet.
4. Draw out reservoir tank.
InspectionNJBR0114Check for the following items.
Replace any part if damaged.
Master cylinder:
+Pin holes or scratches on inner wall.
Piston:
+Deformation of or scratches on piston cups.
SBR354C
AssemblyNJBR01151. Insert secondary piston assembly. Then insert primary piston
assembly.
+Pay attention to alignment of secondary piston slit with valve
stopper mounting hole of cylinder body.
SBR940A
2. Install stopper cap.
Before installing stopper cap, ensure that claws are bent
inward.
3. Push reservoir tank seals into cylinder body.
4. Push reservoir tank into cylinder body.
MASTER CYLINDER (TOKICO)
Disassembly
BR-15

SBR222B
5. Install valve stopper while piston is pushed into cylinder.
SBR704C
InstallationNJBR0116CAUTION:
+Refill with new brake fluid ªDOT 4º.
+Never reuse drained brake fluid.
1. Place master cylinder onto brake booster and secure mount-
ing nuts lightly.
2. Torque mounting nuts.
: 12 - 15 N´m (1.2 - 1.5 kg-m,9-11ft-lb)
3. Fill up reservoir tank with new brake fluid.
4. Plug all ports on master cylinder with fingers to prevent air
suction while releasing brake pedal.
5. Have driver depress brake pedal slowly several times until no
air comes out of master cylinder.
6. Fit brake lines to master cylinder.
7. Tighten flare nuts.
: 15 - 18 N´m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)
8. Bleed air from brake system. Refer to ªBleeding Brake
Systemº, BR-9.
MASTER CYLINDER (TOKICO)
Assembly (Cont'd)
BR-16

RemovalNJBR0117
SBR766E
1. Reservoir cap
2. Oil filter
3. Reservoir tank
4. Seal5. Cylinder body
6. Elastic pin
7. Piston stopper pin8. Secondary piston assembly
9. Primary piston assembly
10. Circlip
CAUTION:
Be careful not to splash brake fluid on painted areas; it may
cause paint damage. If brake fluid is splashed on painted
areas, wash it away with water immediately.
1. Connect a vinyl tube to front caliper air bleeder valve.
2. Drain brake fluid from each front caliper air bleeder valve,
depressing brake pedal to empty fluid from master cylinder.
3. Remove brake pipe flare nuts.
4. Remove master cylinder mounting nuts.
DisassemblyNJBR01181. Remove the circlip.
MASTER CYLINDER [BOSCH (NABCO)]
Removal
BR-17

SBR231E
2. Drive out elastic pin from cylinder body.
3. Remove reservoir tank and seals.
SBR232E
4. Remove piston stopper pin while piston is pushed into cylinder.
5. Remove piston assemblies.
If it is difficult to remove secondary piston assembly,
gradually apply compressed air through fluid outlet.
InspectionNJBR0119Check for the following items.
Replace any part if damaged.
Master cylinder:
+Pin holes or scratches on inner wall.
Piston:
+Deformation of or scratches on piston cups.
SBR233E
AssemblyNJBR01201. Insert secondary piston assembly. Then insert primary piston
assembly.
+Pay attention to alignment of secondary piston slit with
valve stopper mounting hole of cylinder body.
SBR232E
2. Install piston stopper pin while piston is pushed into cylinder.
Then secure the primary and secondary piston assemblies
with circlip.
3. Push reservoir tank seals and reservoir tank into cylinder body.
4. Install elastic pin.
MASTER CYLINDER [BOSCH (NABCO)]
Disassembly (Cont'd)
BR-18

SBR236E
InstallationNJBR0121CAUTION:
+Refill with new brake fluid ªDOT 4º.
+Never reuse drained brake fluid.
1. Place master cylinder onto brake booster and secure mount-
ing nuts lightly.
2. Torque mounting nuts.
: 13 - 15 N´m (1.3 - 1.5 kg-m,9-11ft-lb)
3. Fill up reservoir tank with new brake fluid.
4. Plug all ports on master cylinder with fingers to prevent air
suction while releasing brake pedal.
5. Have driver depress brake pedal slowly several times until no
air comes out of master cylinder.
6. Fit brake lines to master cylinder.
7. Tighten flare nuts.
: 15 - 18 N´m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)
8. Bleed air from brake system.
MASTER CYLINDER [BOSCH (NABCO)]
Installation
BR-19

SBR002A
SBR365AA
On-vehicle ServiceNJBR0023OPERATING CHECKNJBR0023S011. Stop engine and depress brake pedal several times. Check
that pedal stroke does not change.
2. Depress brake pedal, then start engine. If pedal goes down
slightly, operation is normal.
AIRTIGHT CHECKNJBR0023S021. Start engine, and stop it after one or two minutes. Depress
brake pedal several times slowly. The pedal should go further
down the first time, and then it should gradually rise thereaf-
ter.
2. Depress brake pedal while engine is running, and stop engine
with pedal depressed. The pedal stroke should not change
after holding pedal down for30 seconds.
SBR232CB
RemovalNJBR0024CAUTION:
+Be careful not to splash brake fluid on painted areas; it
may cause paint damage. If brake fluid is splashed on
painted areas, wash it away with water immediately.
+Be careful not to deform or bend brake pipes, during
removal of booster.
SBR208E
InspectionNJBR0025OUTPUT ROD LENGTH CHECKNJBR0025S011. Apply vacuum of þ66.7 kPa (þ667 mbar, þ500 mmHg, þ19.69
inHg) to brake booster with a handy vacuum pump.
2. Add preload of 19.6 N (2 kg, 4.4 lb) to output rod.
3. Check output rod length.
Specified length:
10.275 - 10.525 mm (0.4045 - 0.4144 in)
BRAKE BOOSTER
On-vehicle Service
BR-20

InstallationNJBR0026CAUTION:
+Be careful not to deform or bend brake pipes, during
installation of booster.
+Replace clevis pin if damaged.
+Refill with new brake fluid ªDOT 3 or DOT 4º.
+Never reuse drained brake fluid.
+Take care not to damage brake booster mounting bolt
thread when installing. Due to the acute angle of
installation, the threads can be damaged with the dash
panel.
SBR237EA
1. Before fitting booster, temporarily adjust clevis to dimension
shown.
2. Fit booster, then secure mounting nuts (brake pedal bracket to
master cylinder) lightly.
3. Connect brake pedal and booster input rod with clevis pin.
4. Secure mounting nuts.
Specification:
13 - 16 N´m (1.3 - 1.6 kg-m,9-12ft-lb)
5. Install master cylinder. Refer to ªInstallationº in ªMASTER
CYLINDERº, BR-16, 19.
6. Bleed air. Refer to ªBleeding Brake Systemº, BR-9.
BRAKE BOOSTER
Installation
BR-21

SBR225B
Removal and InstallationNJBR0027CAUTION:
When installing vacuum hoses, pay attention to the following
points.
+Do not apply any oil or lubricants to vacuum hose and
check valve.
+Insert vacuum tube into vacuum hose as shown.
+Install check valve, paying attention to its direction.
InspectionNJBR0028HOSES AND CONNECTORSNJBR0028S01Check vacuum lines, connections and check valve for airtightness,
improper attachment chafing and deterioration.
SBR844B
CHECK VALVENJBR0028S02Check vacuum with a vacuum pump.
Connect to booster side Vacuum should exist.
Connect to engine side Vacuum should not exist.
VACUUM HOSE
Removal and Installation
BR-22

RemovalNJBR0123
SBR631E
1. Remove parts shown below.
+Air duct, air cleaner case (upper)
+Engine cover
+Rocker cover
+Exhaust manifold cover
+EGR tube
2. Disconnect vacuum hose from vacuum pump.
3. Remove cylinder head rear cover plate.
+Use a tool such as seal cutter (SST) to remove.
4. Loosen and remove rear cam sprocket installation bolts.
+Camshaft should not be attached. Using engine inner
resistance, loosen installation bolts.
SBR632E
5. Remove vacuum pump and cylinder head rear cover assem-
bly.
+Remove and install vacuum pump, sprocket, drive chain, and
chain guide as an assembly.
+Loosen mounting bolts in the reverse order of the numbers
shown in the figure to the left.
+Remove only bolts that are shown in the figure. (Be especially
careful not to remove M6 bolts on the vacuum pump.)
+Use a tool such as a seal cutter (SST).
VACUUM PUMP
Removal
BR-23

SBR633E
InstallationNJBR01241. Assemble vacuum pump and cylinder head rear cover
assembly, referring to ªComponentº in the next page.
2. Install vacuum pump and cylinder head rear cover assembly to
cylinder head.
a. Apply ThreeBond 1207C (KP510 00150) without breaks to the
location shown in the figure to the left.
SBR632E
b. Tighten the mounting bolts in the numerical order shown by the
figure to the left.
3. Install rear cam sprocket installation bolts.
4. Remove sprocket retaining two M6 bolts.
+M6 bolts will be used for installation.
5. Tighten rear cam sprocket installation bolts.
+Camshaft should not be fixed. Using engine inner resistance,
tighten installation bolts.
SBR634E
6. Install cylinder head rear cover plate.
+Apply ThreeBond 1207C (KP510 00150) without breaks to the
location shown by the figure to the left.
7. Install parts in the reverse order of removal.
CAUTION:
If the engine is started with vacuum pump released (vacuum
hose disconnected), it causes increase of blowby gas amount,
and engine damage may result. When starting the engine, be
sure to close vacuum circuit.
SBR611E
InspectionNJBR0125+Remove vacuum hose. Then, connect vacuum gauge with
three-way connector.
+Install three-way connector to the area where vacuum pump
negative pressure can be directly measured. (The figure
shown an example.)
+Start the engine, then measure negative pressure.
Standard: þ86.6 to þ101.3 kPa (þ866 to þ1,013 mbar,
þ650 to þ760 mmHg, þ25.59 to þ29.92 inHg)
+If it is not within standard, inspect for suction of air in the middle
of route and measure it again.
+If it is still not within standard value, replace the vacuum pump.
VACUUM PUMP
Installation
BR-24