SC 2014 13 Introduction of Xenon 3.0L DICOR BS-III 4X4
SC 2014 13 Introduction of Xenon 3.0L DICOR BS-III 4X4
SC 2014 13 Introduction of Xenon 3.0L DICOR BS-III 4X4
(a)
a.
TATA MOTORS
SC/ 2014/13
Group : 00
Feb-14
Chassis Barrel
VC No.
464244
55021531R
(Annexure-1)
(Annexure-2)
(Annexure-3)
(Annexure-4)
(Annexure-5)
(Annexure-6)
(Annexure-7)
(Annexure-8)
(Annexure-9)
GEAR BOX
Model
No of gears
Gear Ratio
TRANSFER CASE
Type
Drive Options
REAR AXLE
Type
Ratio
FRONT AXLE
Type
Ratio
STEERING
Type
Ratio
Salisbury Rear Axle with Semi-Floating Axle Shafts & Limited slip
differential
3.36 (37/11)
Independently Suspended with Automatic Hub Locks
3.36 (37/11)
Power assisted
18.2 : 1, 18.9:1 (Alternate)
BRAKES
Type
Front Brake
Rear Brake
FRAME
Type
SUSPENSION
Front
Rear
TYRES
FUEL TANK
Capacity
ELECTRICAL SYSTEMS
System Voltage
Alternator Capacity
Battery
PERFORMANCE
Max Speed
Max Gradeability
Min turning circle dia.
Wheelbase
WEIGHTS
Kerb weight
Gross vehicle weight
Max permissible FAW
Max permissible RAW
65 Liters
12 volts
125 Amps
12 V,80 Ah
143 Kmph
32% at rated GVW
12.0 m
3150 mm
2060 Kg
2950 Kg
1280 Kg
1670 Kg
4 Wheel drive
In 2H mode, only the rear two wheels of the vehicle are powered by the engine and the front
wheels are merely pushed. By shifting to four wheels drive mode (4H or 4L) the rear as well as
the front axles get geared to the engine through transfer case and transmit the engine power to
all four wheels. This gives the vehicle increased traction.
In 4H mode, the transmitted engine torque and the vehicle speed remains the same as in 2H.
However, when you shift to 4L mode engine torque is multiplied and vehicle moves at low speed
in the same gears with increased traction. 4L mode is provided for negotiating sharp gradients or
driving through loose soil/ sand
1. Technical Specification
Transfer Case Shifting
Configuration
Fixed Yoke
Fixed Yoke
Input Configuration
Female Spline
Drop Angle
40 degree
Offset Hand
Right Hand
1:1
2.48:1
Lubrication System
Housing Material
Aluminum
30
Shift Pattern
2H 4H 4L
Shift Control
Selector Switch
2. Salient Features
Part time system
Lightweight construction
Helical gearing
Electric shift-on-the-fly
Components
Representative Photo
Operation
The power is received by input shaft which is coupled with output shaft of transmission gear box
by matching splines. There are two outputs, one for rear wheels and the other for front wheels.
Three selector positions are provided
Position
Speed Ratio
Operation
1:1
Only the two rear wheel are drive at 1:1 speed ratio
1:1
2.48:1
Planetary gear set provides gear reduction. Power is transferred to the front wheel drive through
a Morse HY-VO chain drive. Unit operates in an oil bath. An oil pump is used to provide positive
lubrication to the planetary gear set and other upper output shaft components.
The different modes are obtained by rotating selector switch for selection. This in turn gives
signal to the Electronic Control Unit (ECU), which controls operations intelligently. It senses the
conditions and shifts the transfer case as per the selected mode. Inbuilt diagnostic system is
provided in the T/case ECU for T/cases electrical components.
Selection Mode
Rotary switch is provided for selection of three different modes
2H Two wheel high
4H Four wheel high
4L Four wheel low
2H Two wheel high
Selection operation
Shift selector switch mode from 2H to 4H. 4WD HI indicator light will turn ON & vice
versa
Shifting is possible during driving
b. Shifting from 4H to 4L Or 4L to 4H
4.
Service
Connector
ECU Diagnostics
ECU detects transfer case system malfunctions and indicates malfunctioning parts through flashing
indicator lights. The operator will be alerted of fault condition by continuous illumination of both 4WD
HI and 4WD LOW lights on dashboard when ignition is ON.
A service connector is provided to indicate the fault codes in binary. Turn the ignition switch ON
Connect one end to the pin hole number 9 in ECU connector and other end to the ignition switch
(pin no. 23). The flashing of indicator light will show the defective code (As illustrated in the table).
Identify the malfunctioning part and replace it.
L1
L2
L3
Binary code
Decimal Equivalent
Fault With
Off
Off
On
001
ECU Module
Off
On
Off
010
Shift Motor
Off
On
On
011
Synchronizer clutch
On
Off
Off
100
Speed Sensor
On
On
Off
110
Selector Switch
On
On
On
111
NOTE: Before replacing the malfunctioning parts with defective codes, check the wires and
connectors for proper condition.
Technical Specification
Input Configuration
Female Spline
Output Configuration
Location
Working Principle
Automatic Locking
74.0 mm (Nom.)
Gross Weight
Lubrication**
1.Assy. Drag Sleeve
2.Assy. Auto hub lock
3.Assy. Bearing Race
Construction
Caution **:
1.Pl do not wash auto hub lock parts with water, kerosene, petrol, diesel etc. as the Darmex 123 Lt
grease on drag sleeve & bearing grease Castrol LCG-2 will get washed off.
Only ATF Castrol TQ to be used for washing / cleaning of auto hub lock assy at every 45,000 kms
or during replacement of assy.
2. Drag sleeve & bearing in auto hub lock are lubricated during OE assembly only.
3. Auto hub lock spare parts kit is also supplied with lubricated drag sleeve & wheel bearing assy.
Note: LSD feature gets activated & deactivated automatically. No driver intervention is
required.
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Clamp crimper
Ball assembly tool
Puller
Holder yoke
Press
Adaptor ring
Slide hammer puller
Installer pinion oil seal
Handle universal
Drive square for drain plug
Gear Box (G 76)
Handle - for drift
Holder for main shaft coupling flange
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269858903505 or
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90,000
45000
75,000
45000
150,000 km
135,000 km
120,000 km
105,000 km
90,000 km
75,000 km
60,000 km
Frequency
in km
45,000 km
Operation
30,000 km
Sr. No
15,000 km
Note: All other Service Operations remain same as XENON 3.0L DICOR 4X2 BSIII vehicle.
Qty.
Fluid type
Recommended Brands
Engine
6.5 Ltrs
Coolant
9 Ltrs
Gear Box
1.9 Ltrs
Transfer
Case
1.2 Ltrs
Front &
Rear axle
Front1.2 Ltrs
Rear 2.2 Ltrs
Power
Steering
1.4 / 1.6
Ltrs
Front live
axle
92 gm
Wheel
RR3 Grease
Bearing
All Grease As
Nipples
Required
Rear axle
wheel
-Lubricated by differential oil
bearing
Clutch
Fluid
Brake
Fluid
As
DOT 4
Required
Before checking or removing oil, warming up the transfer case is necessary. This should be
done by driving the vehicle for a short distance.
Do not use an impact wrench to open or tighten the drain and oil level plugs. This may
damage threads in transfer case housing.
Km covered
At the time of delivery of vehicle
14,500 to 15,500 Km
29,500 to 30,500 Km
44,500 to 45,500 Km
Months
--12
24
36