Jeep Liberty KJ. Manual — part 29
SPECIFICATIONS
TORQUE - GAS
DESCRIPTION
N-m
Ft. Lbs.
In. Lbs.
Starter Solenoid Battery
Cable Nut
11
-
100
Starter Mounting Bolts -
2.4L
54
40
-
Starter Mounting Bolts
-3.7L
54
40
-
Starter Heat Shield
Mounting Bolts
6
-
55
TORQUE - DIESEL
DESCRIPTION
N-m
Ft. Lbs.
In. Lbs.
Starter Solenoid Battery
Cable Nut
11
-
100
Starter Mounting Bolts
27
20
-
8F - 54
STARTING SYSTEM
KJ
STARTER MOTOR - GAS POWERED
Starter Motor and Solenoid
Engine Application
2.4L / 3.7L
Power Rating
1.4 Kilowatt (1.9 Horsepower)
Voltage
12 Volts
** Number of Permanent Magnets
6
Number of Brushes
4
Drive Type
Planetary Gear Reduction
Free Running Test Voltage
11.2 Volts
Free Running Test Maximum Amperage Draw
90 Amperes
Free Running Test Minimum Speed
2400 rpm
Solenoid Closing Maximum Voltage Required
7.8 Volts
* Cranking Amperage Draw Test
160 Amperes
*Test at operating temperature. Cold engine, tight (new) engine, or heavy oil will increase starter amperage draw.
**The starter is equipped with permanent magnets. Never strike the starter case to attempt to loosen a sticking/
stuck armature as permanent magnets may crack or break.
TORQUE - DIESEL
ITEM
SPECIFICATION
ENGINE
TURBO DIESEL
RATED VOLTAGE
12 VOLTS
NUMBER OF FIELDS
4
NUMBER OF POLES
4
NUMBER OF BRUSHES
4
DRIVE TYPE
GEAR REDUCTION
FREE RUNNING TEST VOLTAGE
11.5 VOLTS
FREE RUNNING TEST MAXIMUM
AMPERAGE DRAW
160 AMPS
FREE RUNNING TEST MINIMUM SPEED
5500 RPM
SOLENOID CLOSING MAXIMUM VOLTAGE
7.8 VOLTS
MAXIMUM CRANKING AMPERAGE DRAW
* 500 AMPS
* A COLD OR NEW ENGINE WILL INCREASE STARTER AMPERAGE DRAW. THE USE OF HEAVY WEIGHT
ENGINE OIL WILL ALSO INCREASE STARTER AMPERAGE DRAW.
KJ
STARTING SYSTEM
8F - 55
STARTER MOTOR
DIAGNOSIS AND TESTING - STARTER MOTOR
Correct starter motor operation can be confirmed by performing the following free running bench test. This test can
only be performed with starter motor removed from vehicle. Refer to Specifications for starter motor specifications.
1. Remove starter motor from vehicle. Refer to Starter Motor Removal and Installation.
2. Mount starter motor securely in a soft-jawed bench vise. The vise jaws should be clamped on the mounting
flange of starter motor. Never clamp on starter motor by field frame.
3. Connect a suitable volt-ampere tester and a 12-volt battery to starter motor in series, and set ammeter to 100
ampere scale. See instructions provided by manufacturer of volt-ampere tester being used.
4. Install jumper wire from solenoid terminal to solenoid battery terminal. The starter motor should operate. If starter
motor fails to operate, replace faulty starter motor assembly.
5. Adjust carbon pile load of tester to obtain free running test voltage. Refer to Specifications for starter motor free
running test voltage specifications.
6. Note reading on ammeter and compare reading to free running test maximum amperage draw. Refer to Speci-
fications for starter motor free running test maximum amperage draw specifications.
7. If ammeter reading exceeds maximum amperage draw specification, replace faulty starter motor assembly.
STARTER SOLENOID
This test can only be performed with starter motor
removed from vehicle.
1. Remove starter motor from vehicle. Refer to Starter
Motor Removal and Installation.
2. Disconnect wire from solenoid field coil terminal.
3. Check for continuity between solenoid terminal (3)
and solenoid field coil terminal (2) with a continuity
tester (1). There should be continuity. If OK, go to
Step 4. If not OK, replace faulty starter motor
assembly.
8F - 56
STARTING SYSTEM
KJ
4. Check for continuity between solenoid terminal (1)
and solenoid case. There should be continuity. If
not OK, replace faulty starter motor assembly.
REMOVAL
2.4L
1. Disconnect and isolate negative battery cable.
2. Raise and support vehicle.
3. Remove solenoid wire connector (3) from solenoid
terminal.
4. Remove battery cable eyelet (2) from stud on
starter solenoid.
KJ
STARTING SYSTEM
8F - 57
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