Dodge Sprinter 2006 Manual page 802

5 - 18 BRAKES - BASE
(3) Use a h a n d oper a t ed va cu u m pu m p for t est .
(4) Apply 15-20 in ch es va cu u m a t la r ge en d of
ch eck va lve (F ig. 18).
(5) Va cu u m sh ou ld h old st ea dy. If ga u ge on pu m p
in dica t es va cu u m loss, ch eck va lve is fa u lt y a n d
sh ou ld be r epla ced.
Fig. 18 Vacuum Check Valve And Seal
1 - BOOSTER CHECK VALVE
2 - APPLY TEST VACUUM HERE
3 - VALVE SEAL
STANDARD PROCEDURE - MASTER CYLINDER
BLEEDING
A n ew m a st er cylin der sh ou ld be bled befor e in st a l-
la t ion on t h e veh icle. Requ ir ed bleedin g t ools in clu de
bleed t u bes a n d a wood dowel t o st r oke t h e pist on s.
Bleed t u bes ca n be fa br ica t ed fr om br a ke lin e.
(1) Mou n t m a st er cylin der in vise.
(2) At t a ch bleed t u bes t o cylin der ou t let por t s.
Th en posit ion ea ch t u be en d in t o r eser voir (F ig. 19).
(3) F ill r eser voir wit h fr esh br a ke flu id.
(4) P r ess cylin der pist on s in wa r d wit h wood dowel.
Th en r elea se pist on s a n d a llow t h em t o r et u r n u n der
spr in g pr essu r e. Con t in u e bleedin g oper a t ion s u n t il
a ir bu bbles a r e n o lon ger visible in flu id.
Fig. 19 Master Cylinder Bleeding–Typical
1 - BLEEDING TUBES
2 - RESERVOIR
REMOVAL
(1) Usin g a su ct ion gu n r em ove a s m u ch br a ke
flu id fr om t h e r eser voir a s possible (F ig. 20).
(2) Rem ove t h e flu id r eser voir (F ig. 20) or (F ig. 21)
(Refer t o 5 - BRAKE S/H YDRAULIC/ME CH ANICAL/
F LUID RE SE RVOIR - RE MOVAL).
(3) Rem ove t h e br a ke lin es S e a l o ff th e e n d s a n d
bo re h o le s w ith p lu g s . (F ig. 20) or (F ig. 21)
(4) Rem ove t h e m a st er cylin der m ou n t in g n u t s
(F ig. 20) or (F ig. 21). Ch e c k bra k e bo o s te r fo r
d a m a g e d u e to le a k in g m a s te r c y lin d e r. It is n o t
p o s s ible to re p a ir th e m a s te r c y lin d e r.
Fig. 20 MASTER CYLINDER
1 - SUCTION GUN
2 - BRAKE FLUID CAP
3 - BRAKE FLUID LEVEL INDICATOR
4 - O-RING
5 - NUT
6 - BRAKE LINE
7 - MASTER CYLINDER
8 - FLUID RESERVOIR
VA