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Begin OCR Text:
p _ 2O. P t 8OO
_. 3ack up +he rear e,d a,d place blocks under DISM_H7_IH_
the rear a_le. Release the handbrake_ _. _,rew oii +he ,ap (2, Fig. l and 2l) and empty
2. Ro+gte +he wheel while applying the brake5 o,t +he brake iiuid.
by turning the adjusting screw clockwise wifh 2. puii back +he rubber cover (6) and remove tfe
the he_p oi spanner SVO l548. see Fig_ 26 ,_irc(__p (l), washer (g) and thrust rod (5). Shake
When the wheel can only jusf be turned round out aii +he parts irom +he cylinder, see Fig. 27.
with one hand, stop turning the screw_ Then
ease oii iour ''notches'' and check that the
brake drum can rotate ireely with the ad- _HSpE___Hç
justing screw in the locked position_ (i i th t i. d
h h _ . h _efore inspecting. a parts o e mas 8r CY in er
3. Adjusf tfe ot er rear w ee in t e same Way_ jd b h d . th ( t d . .+
_ h shou e was e in me y a e spiri _
oWer t e Caf_ h (. d i (i _ t j( Th
e_amine t e cy in er care u y in erna y_ ere
must be ,o scoring, scratches or rust on Ife polished
suriace. Such damage can as a rule be eliminaf8d
by ho,ing +fe cylinder. The procedure ior doing
this varies with d_iiierent makes oi tool so that no _
_ d . +_ b _ Th i re ioiiow
genera e5crip ion can e giVen_ efe O
+he ma,ulgcturer's instructions. Clean the cylinder
careiully aiter hon'ing and check that tfe holes are
clear.
__he clearance befween fhe plunger and cylinder _
must not e_ceed O.2O mm (O_OO8''?, If the clearanCe
e_ceeds this value. test wi+h a new plunger_ li
this does not help. the master cylinder must be
replaced.
Replace both the plunger seals. Any ofher parts
'i_'__'_'_j'i which are damaged or wori_ should be replaced_
Fig. l6. Adjusting the wheel brake unit. _SSEMa_lHG
MaIte_ _yliItde_ 1 . Fit the washer C15. Fig_ 27) in the bottom ol
observe the u+mosI ,are when working on the the cyl_indel_
hydrau(ic system Wash the hands with soap and , 6
' _ i
_ 1i
wa+er beiore cleaning the internal parts_ The5e
should be cleg,ed with methylated spirit_ Petrol
(gasoline). , paraliin Ckerosene), trichlorethyle,e OF _
a,y o+her spirit containing bensol must not be used_ __
on_y ijjl wi+h a iirst-class brake tluid which lulfiI5
+he requireme,ts oi SAE 7O R 3. Fluids which only
l
iu(iii the requirements ol SAE 7O R t , or wfat is 4
know, as HD quality. must not be used. Avoid
spi_ii,g brake iluid on the paintwork as this ca,
cause damage, 1i 1i _3 l_ tt lO _
_EMO_lHG voLvo
b k 74734
_ . Remove the split pin and bolt ior the ra e
d i u h k th + _ R ve +he Fig. 27. MaSter cylinder_
pe a . n oo e re Ufn 5prlng_ emO
rubber cover. z. filler cap 1 1, Washer
2 Remo,e +he two o-+t,,h_,,g boi+s ior +he mas+gr 5. Thrust rod 12_ 5eal
' i d D. + th b k (, t_ 6. _ubber co_er 13. Spring
cy in er. iscon,e, e fa e Ine COnneC lOn v _
h _. d i ii _. _jr__ip 14. a _e
a,d take ouf t e masIer cy in er care u Y_ $ w h __ w h
. a, er . as er
Avoid spiIling brake fluid on tfe painfwork a5 q. Sea( _6. CyIinder body
this can cause damage. 1 O_ Plu,ger
__1 2
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