Dodge Sprinter 2006 Manual page 1903

VA
OPERA TION
Fig. 218 Planetary Geartrain
1 - ANNULUS GEAR
2 - PLANETARY PINION GEARS
3 - SUN GEAR
4 - PLANETARY CARRIER
Th e a n n u lu s gea r (1) (F ig. 218) a n d su n gea r (3)
elem en t s of a pla n et a r y gea r syst em a r e a lt er n a t ely
dr iven a n d br a ked by t h e a ct u a t in g elem en t s of t h e
m u lt i-pla t e clu t ch a n d m u lt iple-disc br a ke. Th e pla n -
et a r y pin ion gea r s (2) ca n t u r n on t h e in t er n a l gea r-
in g of t h e a n n u lu s gea r (1) a n d on t h e ext er n a l
gea r in g of t h e su n gea r (3). Th is a llows for a va r iet y
of gea r r a t ios a n d t h e r ever sa l of t h e r ot a t ion dir ec-
t ion wit h ou t t h e n eed for m ovin g gea r wh eels or sh ift
colla r s. Wh en t wo com pon en t s of t h e pla n et a r y gea r
set a r e locked t oget h er, t h e pla n et a r y gea r set is
locked a n d t u r n s a s a closed u n it .
Th e t or qu e a n d en gin e speed a r e con ver t ed a ccor d-
in g t o t h e lever r a t ios a n d t h e r a t io of t h e n u m ber of
t eet h on t h e dr iven gea r s t o t h a t on t h e dr ive gea r s,
a n d is r efer r ed t o a s t h e gea r r a t io. Th e over a ll r a t io
of a n u m ber of pla n et a r y gea r set s con n ect ed in
ser ies is obt a in ed by m u lt iplyin g t h e pa r t ia l r a t ios.
AUTOMA TIC TRANSMISSION NAG1 - SERVICE INFORMA TION 21 - 165