1998 NISSAN PICK-UP Repair Manual

Trouble Diagnoses
If any abnormality is found, immediately disconnect battery negative terminal.
Starter does not stop.cReplace magnetic switch.
Engine does not start.
Does engine turn by cranking?
No
cYes
Does engine turn normally?
No (Turns slowly.)
cYes
Check ignition/fuel system.
Check battery as follows:lCharging conditionlTerminal connectionslTerminal corrosion
NG
cOK
Repair starter motor.
VA
Does starter motor turn?
No
cYes
Does gear shaft turn?
No
cYes
Check pinion clutch.
Check reduction gear, armature
and gear shaft.
Check fuse and fusible link.
OK
cNG
Replace.
Check battery as follows:lCharging conditionlTerminal connectionslTerminal corrosion
OK
VA
cNGlCharge battery.lRepair connections and corrosion
of battery terminals.
Check starting system wiring.
OK
cNG
Repair.
Does magnetic switch operation
sound occur?
Yes
cNo
Replace magnetic switch.
Check condition of pinion and ring
gear mesh.
NG
cOK
Does starter turn under no load by
connecting wires as follows?
SEL009Z
cYes
Replace magnetic switch.
lAdjust pinion movement.lCheck pinion moving mecha-
nism.
lCheck ring gear.
cNo
Repair starter motor.
.
.
.
.
.
.
.
.
.
.
.
.
STARTING SYSTEM
EL-27

Construction
MEL673EA
SEL600JA
.Unit :
STARTING SYSTEM
EL-28

MEL440H
STARTING SYSTEM
Construction (Cont'd)
EL-29

Removal and Installation
Inspection
MAGNETIC SWITCH CHECK
lBefore starting to check, disconnect battery ground cable.
lDisconnect ``M'' terminal of starter motor.
1. Continuity test (between ``S'' terminal and switch body).
lNo continuity ... Replace.
2. Continuity test (between ``S'' terminal and ``M'' terminal).
lNo continuity ... Replace.
PINION/CLUTCH CHECK
1. Inspect pinion teeth.
lReplace pinion if teeth are worn or damaged. (Also check
condition of ring gear teeth.)
2. Inspect reduction gear teeth (If equipped).
lReplace reduction gear if teeth are worn or damaged. (Also
check condition of armature shaft gear teeth.)
3. Check to see if pinion locks in one direction and rotates
smoothly in the opposite direction.
lIf it locks or rotates in both directions, or unusual resistance
is evident. ... Replace.
BRUSH CHECK
Brush
Check wear of brush.
Wear limit length:
Refer to SDS, EL-33.
lExcessive wear ... Replace.
MEL271H
SEL036H
SEL038H
SEL630BA
SEL014Z
STARTING SYSTEM
EL-30

Brush spring pressure
Check brush spring pressure with brush spring detached from
brush.
Spring pressure (with new brush):
Refer to SDS, EL-33.
lNot within the specified values ... Replace.
Brush holder
1. Perform insulation test between brush holder (positive side)
and its base (negative side).
lContinuity exists. ... Replace.
2. Check brush to see if it moves smoothly.
lIf brush holder is bent, replace it; if sliding surface is dirty,
clean.
YOKE CHECK
Magnet is secured to yoke by bonding agent. Check magnet to
see that it is secured to yoke and for any cracks. Replace mal-
functioning parts as an assembly.
CAUTION:
Do not clamp yoke in a vice or strike it with a hammer.
ARMATURE CHECK
1. Continuity test (between two segments side by side).
lNo continuity ... Replace.
2. Insulation test (between each commutator bar and shaft).
lContinuity exists. ... Replace.
3. Check commutator surface.
lRough ... Sand lightly with No. 500 - 600 emery paper.
SEL015Z
SEL568B
SEL305H
SEL019Z
SEL020Z
STARTING SYSTEM
Inspection (Cont'd)
EL-31

4. Check diameter of commutator.
Commutator minimum diameter:
Refer to SDS, EL-33.
lLess than specified value ... Replace.
5. Check depth of insulating mold from commutator surface.
lLess than 0.2 mm (0.008 in) ... Undercut to 0.5 to 0.8 mm
(0.020 to 0.031 in)
Assembly
Apply high-temperature grease to lubricate the bearing, gears
and frictional surface when assembling the starter.
Carefully observe the following instructions.
PINION PROTRUSION LENGTH ADJUSTMENT
Clearance ``!''
With pinion driven out by magnetic switch, push pinion back to
remove slack and measure clearance ``!'' between the front edge
of the pinion and the pinion stopper.
Clearance ``!'':
Refer to SDS, EL-33.
SEL021Z
SEL022Z
SEL026Z
STARTING SYSTEM
Inspection (Cont'd)
EL-32

Movement ``!''
Compare movement ``!'' in height of pinion when it is pushed out
with magnetic switch energized and when it is pulled out by hand
until it touches stopper.
Movement ``!'':
Refer to SDS, EL-33.
lNot in the specified value ... Adjust by adjusting plate.
Service Data and Specifications (SDS)
STARTER
TypeM3T70381 M3T29482D S13-327
MITSUBISHI HITACHI
Non-reduction Reduction
Applied model2WD 4WD 2WD
KA24 TD25
Standard Standard
System voltage V 12
No-load
Terminal voltage V 11.5 11.0
Current A Less than 60 Less than 160
Revolution rpm More than 6,500 More than 4,000
Minimum diameter of commutator
mm (in)31.4 (1.236) 35.5 (1.398)
Minimum length of brush
mm (in)11.5 (0.453) 9.0 (0.354)
Brush spring tension N (kg, lb)13.7 - 25.5
(1.4 - 2.6, 3.1 - 5.7)Ð
Clearance between bearing metal and
armature shaft
mm (in)Ð Less than 0.2 (0.008) Ð
Clearance ``!'' between pinion front edge
and pinion stopper
mm (in)0.5 - 2.0
(0.020 - 0.079)Ð
Movement ``!'' in height of pinion assembly
mm (in)Ð0.3 - 1.5
(0.012 - 0.059)
SEL497D
SEL633BA
STARTING SYSTEM
Assembly (Cont'd)
EL-33

Wiring Diagram Ð CHARGE Ð/Gasoline
Engine
HEL318A
CHARGING SYSTEM
EL-34