Function Description; Tod System Select Mode; Component Function - SSANGYONG Y200 Manual

5D2-14 TRANSFER CASE - TOD

TOD SYSTEM SELECT MODE

4H is the mode when drive normally of which gear ratio
is 1 : 1 and 4L mode distributes power to front and
rear wheels 50 : 50 of which gear ratio is 2.48 : 1.
TOD system controls clutch mechanism to comply with
rotation in front and rear propeller shaft and if its
difference exceeds the permissible range,
corresponding power is distributed into front wheel
through EMC (Electro-Magnetic Clutch). Hall effect
sensor signals speed on front and rear propeller shafts
going through with TOD control unit.
Transfer case clutch coil is activated by variable current
on exceeding difference of speed in front and rear
propeller shafts.
Select 4L Mode
When select 4L mode, EMC is locked to apply
maximum torque into front and rear propeller shafts.
Shift motor rotates also 4L position by rotation of cam
thus propeller shaft torque changes from 1 : 1 to 2.48 : 1
by planetary gear set.
Deselect 4L Mode
When select 4H mode, the 4WD mode is deselected
and returns the 4WD - high speed mode.
•
"4H" switch : Slef-return Type
•
"4L" switch : Push Lock Type

FUNCTION DESCRIPTION

YAD5D060

COMPONENT FUNCTION

Shift Motor
It locates backside transfer case, which drives rotary
helical cam. When mode select switch changes to 4L,
shift fork is on position for 2.48:1 by rotation of helical
cam.
Transfer Case
TOD transfer case distributes power into front and rear
axle by operation of 4H/4L switch and shift motor.
Shifting 4H to 4L, is performed towards reducing HI-
LO collar by means for connection HI-LO shift fork with
output shaft in order to join with planetary gear. Torque
transmits input shaft then sun gear rotating front
planetary gear. Front planetary gear join with output
shaft and drives LO position.
TOD Control Unit
TOD control unit is located on the floor under the driver
seat.
Shape and function of TOD Control Unit
YAD5D070
YAD5D080
SSANGYONG Y200