1995 NISSAN ALMERA N15 Service Manual

SBR646REAR
DISCBRAKE
Assembly (Cont'd)

8. Insert piston sealintogroove oncylinder body.
9. With piston bootfitted topiston, insertpiston bootinto
groove oncylinder bodyandfitpiston byturning itclock-
wise withlong nose pliers, orsuitable tool.

Commercial
service
1001

SBR868C
10.Fittoggle lever,return spring andcable guide.

Installation
CAUTION:
• Refill withnewbrake fluid"DOT 3"or"DOT
4".

• Never reusedrained brakefluid.
• Donot mix different typesofbrake fluids(DOT3,DOT
4).

1. Install caliper assembly.
2. Install brakehosetocaliper securely.
3. Install allparts andsecure allbolts.
4. Bleed air.Refer to"Bleeding Procedure", BR-6.

BR-35
•

PARKINGBRAKECONTROL

ItJ
3.'.'~ (0.33.0.... 28.6 •38.2)~

Rear RHcable "'"

SEC.
443
\;..,Reardrum model

,Lever assembly
~r.iil
~4.3-6.5

I
llrJ
3.2•4.3 "~(0.44 •0.66, 38.2•57.3)
~ ~15.7 -19.6 (0.33.0.44,28.6.38.2)
','(5' ..--,

jjf ..
(y -
2.0, 11.6 •14.5) ~1iI3.2 •4.3
"""'...~)\)')'))Jl--'

/, f
(0.33-0.44, 28.6-38.2)
m

" ,RearLHcab7e

Ad'
t t~
J,
e
r
<~
3.2•4.3 (0.33 -0.44, 28.6•38.2)

IUS
Ing nu~ ~'
I
Front \

~/ i
!cablem. ~\ I
Parking brake ,,~'::\'
I'
<> ~ ~

warning lampswitch
I
(~./?' ~
Boot /-

JJ~?
iii
3.2•4.3 ~3.2.4.3 (0.33 •0.44, 28.6-38.2)

~ M___
(0.33•0.44, 28.6-38.2)
iii
~ci~3; ~'~.44,
II]
3.2•4.3 (0.33 •0.44',28.6 -38.2)

Bracket
28.6_38.2)
Ill:
N.m(kg-m, In-Ib)

~: N.m(kg-m, ft-Ib) SBR028DA

Removal andInstallation

1. To remove parkingbrakecable, firstremove centercon-
sole.
2. Disconnect warninglampconnector.
3. Remove bolts,slacken offand remove adjusting nut.
4. Remove lockplate anddisconnect cable(discbrake only).
For drum brake models, refertoBR-25.

Inspection
1. Check control leverforwear orother damage. Replaceif
necessary.
2. Check wiresfordiscontinuity ordeterioration. Replaceif
necessary.
3. Check warning lampandswitch. Replace ifnecessary.
4. Check partsateach connecting portionand,ifdeformed or
damaged, replace.

BR-36

Togglelever
Stopper
Front

V
PARKING
BRAKECONTROL
Adjustment
Before orafter adjustment, payattention tothe following points.
a. For rear discbrake besure thattoggle leverreturns to
stopper whenparking brakeleverisreleased.
b. There isno drag when parking brakeleverisreleased.

SBR029D
SBR042D
1.
Adjust clearance betweenshoeanddrum/pad androtor as
follows:
a. Release parkingbrakeleverandloosen adjusting nut.
b.- Depress brakepedalfullyatleast 10times withengine run-
ning.
2. Pull control lever4-5 notches. Thenadjust control leverby
turning adjusting nut.

196 N(20 kg,44Ib)

/

SBR073D
3.
Pull control leverwithspecified amountofforce. Check
lever stroke andensure smooth operation.

Number ofnotches:
Drum brake: 7-
8

Disc brake: 8-
9

4. Bend warning lampswitchplate toensure following. Warn-
ing lamp comes onwhen leverispulled "A"notches and
goes outwhen fullyreleased.

Number of
"A"
notches: 1or less
BR-37
•

ANTI-LOCKBRAKESYSTEM
Purpose

The Anti-Lock BrakeSystem (ABS)consists ofelectronic andhydraulic components. Itallows forcon-
trol ofbraking forcesothat locking ofthe wheels canbeavoided.
The ABS:
1) Improves propertracking performance throughsteering wheeloperation.
2) Eases obstacles tobe avoided throughsteering wheeloperation.
3) Improves vehiclestability bypreventing flatspins.

Operation

• When thevehicle speedisless than 10km/h (6MPH) thissystem doesnotwork.
• The Anti-Lock BrakeSystem (ABS)hasself-test capabilities. Thesystem turnsonthe ABS warning
light for1second afterturning theignition switchON.The system performs anothertestthefirst time
the vehicle reaches 6km/h (4MPH). Amechanical noisemaybeheard asthe ABS performs aself-
test. This isanormal partofthe self-test feature.Ifa malfunction isfound during thischeck, theABS
warning lightwillcome on.
• During ABSoperation, amechanical noisemaybeheard. Thisisanormal condition.

ABS Hydraulic Circuit

G)
Inletsolenoid valve

@
Outlet solenoid valve

@
Reservoir

@)
Pump
)(

@

@
Motor

@
Inletvalve

(J)
Outlet valve
@ Bypass checkvalve

BR-38 @

Check valve

@)
Damper

@
Gradient switch
SBR918C

ANTI-LOCKBRAKESYSTEM
System Components

Dual proportioning
valve
Rearwheel sensors
For LHD models, controlunit
is located onthe opposite side.

SBR048DB

Control unit

s::';o~'~W.
r Magnetic flux~ _~-Coil

I .I

Tooth~ Sensorrotor
/ ~m~f onetooth

v:~-- System
Description
SENSOR

The sensor unitconsists ofagear-shaped sensorrotoranda
sensor element. Theelement contains abar magnet around
which acoil iswound. Thesensor isinstalled onthe back side
of the brake rotor.Sine-wave currentisgenerated bythe sen-
sor asthe wheel rotates. Thefrequency andvoltage increase(s) •
as the rotating speedincreases. :•

V: Induced electromotive force

SBR124B
SBR049DA CONTROL
UNIT

The control unitcomputes thewheel rotating speedbythe sig-
nal current sentfrom thesensor. Thenitsupplies aDC current
to the actuator solenoid valve.Italso controls ON-OFFopera-
tion ofthe valve relayandmotor relay.Ifany electrical malfunc-
tion should bedetected inthe system, thecontrol unitcauses
the warning lamptolight up.Inthis condition, theASS willbe
deactivated bythe control unit,andthevehicle's brakesystem
reverts tonormal operation.

BR-39

ANTI-LOCKBRAKESYSTEM
Removal andInstallation
CAUTION: Be careful nottodamage sensoredgeandsensor rotorteeth.
When removing thefront orrear wheel hubassembly, discon-
nect theABS wheel sensor fromtheassembly andmove it
away.
FRONT WHEEL SENSOR
Front wheel sensor (LH) ~!Ii

3.9-5.9 (0.4 -0.6, 35-52)
~: Nom (kg-m, ft-lb)
~: Nom(kg-m, in-Ib)

SBR030DA
REAR WHEEL SENSOR
BR-40
\

L
Rear wheel sensor (LH)

~: Nom (kg-m, ft-Ib)
~: Nom(kg-m, in-Ib)

SBR031DA

ANTI-LOCKBRAKESYSTEM

Removal andInstallation (Cont'd)

SENSOR ROTOR

Removal
1. Remove thedrive shaftandrear wheel hub.Refer toFA
section ("DriveShaft",FRONTAXLE") andRAsection
("Wheel Hub",REARAXLE").
2. Remove thesensor rotorusing suitable puller,driftand
bearing replacer.
Suitable drift

SBR873CA
Installation
Install thesensor rotor.Forfront sensor rotor,usehammer and
wooden block.Forrear sensor rotor,usesuitable driftand
press.
• Always replace sensorrotorwithnewone.

SBR985C
•

• Pay attention tothe dimension ofrear sensor rotorasshown
in figure.
h: 4.5 -5.5 mm (0.177 -0.217 in)

CONTROL UNIT

Location: Passenger side,behind dashsidelower finisher.
• Make surethatthesensor shieldground cableissecured
with mounting bolt.

SBR986C

Suitable
drift

B,.,k" ~ ABS
.'0"'" ","

Dash side ~
lower finisher ~3.9_5.9 N.m

(0.4 -0.6 kg-m,

35 -52 In-Ib)
SBR032DA

Rear
sensor rotor

BR-41

,ryside
linder prima
From master cy ndaryside

r
der seco
master cyIn
From

RHO

cc:J
11-15 .11)
(1.1 .
1.5, 8

~ Front

LHO
ASS
relay
box
ground
Actuator
cable

---------~~~~~:A~K~EirS;V~S~T~EWo.M;(c:O;;~'diij)I----

ANTI-LOCK
BRdInstallation (Cont
Removal an
ABS ACTUATOR
heelcylinder (RH)
To rear
W
clinder (LH)
f ntwheel y
To ro
aster cylinder
From m
primary side
aster cylinder
From m 'de
secondary
Sl
(LH)
Wheel cylinder
To rear

W
heel cylinder (RH)
To
rear
(kg-m.in-Ib)
r.ii1
'N.m

IX! '
(kg-m. ft-Ib)

cc:J:
N.m

SBR033DA
BR-42