Dodge Sprinter 2006 Manual page 1893

VA
u pper a n d lower side of t h e cr escen t (1) t o t h e pr es-
su r e ch a m ber (6) of t h e h ou sin g. Th e m esh in g of t h e
t eet h pr even t s oil flowin g fr om t h e deliver y side t o
t h e in t a ke side. An ext er n a l gea r (3) is eccen t r ica lly
m ou n t ed in t h e pu m p h ou sin g. Th e ext er n a l gea r is
dr iven by t h e in t er n a l gea r (4) wh ich is con n ect ed t o
t h e t or qu e con ver t er h u b.
DISASSEMBL Y
Fig. 186 Oil Pump Gears
1 - OUTER PUMP ROTOR
2 - INNER PUMP ROTOR
(1) Rem ove pu m p gea r s (1 a n d 2) (F ig. 186) fr om
pu m p h ou sin g.
Fig. 187 Remove Oil Pump Seals
1 - INNER OIL SEAL
2 - OUTER OIL SEAL
(2) Rem ove t h e in n er oil pu m p sea l (1) (F ig. 187).
(3) Repla ce t h e ou t er oil pu m p O-r in g (2) (F ig.
187).
INSPECTION
Befor e m ea su r in g a n y oil pu m p com pon en t s, per-
for m a t h or ou gh visu a l in spect ion of a ll t h e com po-
AUTOMA TIC TRANSMISSION NAG1 - SERVICE INFORMA TION 21 - 155
n en t s. If a n y sign of scor in g, scr a t ch es, or ot h er
da m a ge is seen , r epla ce t h e oil pu m p a s a n a ssem bly.
SIDE CLEARANCE
Side clea r a n ce is t h e differ en ce bet ween t h e t h ick-
n ess of t h e pu m p gea r s a n d t h e dept h of t h e pocket
in t h e pu m p h ou sin g. Side clea r a n ce ca n be m ea -
su r ed by la yin g a fla t pla t e a cr oss t h e m ou n t in g fa ce
of t h e pu m p h ou sin g, a n d m ea su r in g t h e dist a n ce
bet ween t h e pla t e a n d t h e gea r s.
Acceptable side clearance:
• In n er gea r : 0.064 m m (0.0025 in ) m a x
• Ou t er gea r : 0.069 m m (0.0027 in ) m a x
TIP CLEARANCE
Fig. 188 Oil Pump Measurement
1 - MEASURE 37MM FROM THE CORNER OF CRESCENT
2 - TIGHT MESH HERE
3 - MEASURE TIP CLEARANCE HERE
Tip clea r a n ce is t h e differ en ce bet ween t h e t ip
dia m et er s of t h e gea r t eet h a n d t h e cor r espon din g
dia m et er s of t h e pocket in t h e pu m p h ou sin g.
Tip clea r a n ce for t h e in n er gea r ca n be ch ecked by
m ovin g t h e in n er gea r in t o t igh t m esh (2) (F ig. 188)
wit h t h e ou t er gea r a s sh own . Clea r a n ce bet ween t h e
ID of t h e cr escen t fea t u r e of t h e h ou sin g a n d t h e OD
of t h e t eet h of t h e in n er gea r (3) sh ou ld t h en m e
m ea su r ed a t a poin t 37 m m fr om t h e cor n er of t h e
cr escen t (1) fea t u r e, a s sh own below.
Acceptable tip clearance for inner gear:
• 0.85 m m (0.033 in ) m a x