Dodge Sprinter 2006 Manual page 1919

VA
STA TOR
Fig. 245 Stator Components
1 - CAM (OUTER RACE)
2 - ROLLER
3 - SPRING
4 - INNER RACE
Th e st a t or a ssem bly (1-4) (F ig. 245) is m ou n t ed on
a st a t ion a r y sh a ft wh ich is a n in t egr a l pa r t of t h e oil
pu m p.
Fig. 246 Stator Location
1 - STATOR
2 - IMPELLER
3 - FLUID FLOW
4 - TURBINE
Th e st a t or (1) is loca t ed bet ween t h e im peller (2)
a n d t u r bin e (4) wit h in t h e t or qu e con ver t er ca se (F ig.
246). Th e st a t or con t a in s a fr eewh eelin g clu t ch ,
wh ich a llows t h e st a t or t o r ot a t e on ly in a clockwise
dir ect ion . Wh en t h e st a t or is locked a ga in st t h e fr ee-
AUTOMA TIC TRANSMISSION NAG1 - SERVICE INFORMA TION 21 - 181
wh eelin g clu t ch , t h e t or qu e m u lt iplica t ion fea t u r e of
t h e t or qu e con ver t er is oper a t ion a l.
TORQUE CONVERTER CLUTCH (TCC)
Fig. 247 Torque Converter Lock-up Clutch
1 - TURBINE
2 - IMPELLER
3 - STATOR
4 - INPUT SHAFT
5 - STATOR SHAFT
6 - PISTON
7 - COVER SHELL
8 - INTERNALLY TOOTHED DISC CARRIER
9 - CLUTCH PLATE SET
10 - EXTERNALLY TOOTHED DISC CARRIER
11 - TURBINE DAMPER
Th e TCC (9) (F ig. 247) wa s in st a lled t o im pr ove
t h e efficien cy of t h e t or qu e con ver t er t h a t is lost t o
t h e slippa ge of t h e flu id cou plin g. Alt h ou gh t h e flu id
cou plin g pr ovides sm oot h , sh ock-fr ee power t r a n sfer,
it is n a t u r a l for a ll flu id cou plin gs t o slip. If t h e
im peller a n d t u r bin e wer e m ech a n ica lly locked
t oget h er, a zer o slippa ge con dit ion cou ld be obt a in ed.
A h ydr a u lic pist on wit h fr ict ion m a t er ia l wa s a dded
t o t h e t u r bin e a ssem bly t o pr ovide t h is m ech a n ica l
lock-u p.
In or der t o r edu ce h ea t bu ild-u p in t h e t r a n sm is-
sion a n d bu ffer t h e power t r a in a ga in st t or sion a l
vibr a t ion s, t h e TCM ca n du t y cycle t h e t or qu e con -
ver t er lock-u p solen oid t o a ch ieve a sm oot h a pplica -
t ion of t h e t or qu e con ver t er clu t ch . Th is fu n ct ion ,
r efer r ed t o a s E lect r on ica lly Modu la t ed Con ver t er
Clu t ch (E MCC) ca n occu r a t va r iou s t im es depen din g
on t h e followin g va r ia bles:
• Sh ift lever posit ion
• Cu r r en t gea r r a n ge