
Routine maintenance 
Maintenance is essential tOI C"~l"'Il\J sal"I\,. 
The 1"II<)wII'~1 Sr:r",,:,~ schedules ,"lJ ol I rS I of the maintenance req
. 
, 
.    . c;~ 
~--------------------'--~~~~'~ 
I Br,lke St'fVO uni/ 12 A" mIN duct 21 f/,ld'o,IOI l"lm c:,/, 31 Coohng sys/em pressure 2 Slarl v

 " , 
'6 Routine maintenance 
) 
Every 250 miles (400 lUll) or weekly -whichever comes first 
Check the engine 011 level and lOp up "  OCCCSSJry (Chapler 1) Check and adlus t lhe IYIC pressures (Chilplcr 10) Clean the windscreen and windows C lean the  hcadlamps 
Every 6000 miles (10000 km) o r six Illonlhs - whichever comes fir s t 
£II[1ille (Clwpter 1) Change engllle 011 and IIher 
Cleiln oil  flilm c"p Chcck 10 1  ,IllY  fluid  leaka!)e ,n enUme CO'llp:lnUlCIl1 
Cooling syslem (Clwptet 2) Check  cool:'lnt  level 
Fuel syslem (Clmpler 3) Check idh"U mi~lUle (cmiJUiello1  IllUdels onlv) al I"SI se.v,ce ollIe, overhaul C heck idllllg sj)ee d 
Ignition sys/Cm (C/I,Wler 4) Clean ,1nd re!)"p Sl)".k  plu!)s  (.:on!nC '  breilkCl Illudels olllv) Cle an  and check d'Shibu\o. C"I).  '010'. HT lealls mId co.1 (COllWct 
bleaker modcls only) Check  elwell angle (cOntact b.e"ke. mo
Bri/king sys/Cm  (Ch,1pter 9) Check selva 
Che ck hydraulic  flu id  h,vel 
Ch(: ck p"ds :'Illd  sho(:s  lor wear Check h.ake hllcs and hoses 
Suspension .wel stvi'ring (Chi/pICr 10) Check tyres 10' w ear  and dam:lge Check  steering COmp{lIlCnlS l o r  w e:l l "lid d.1nlilue 
Bodywork. .111d fittings (Clwptef 11) C lu .. >ek  se"t belts fa. we .... damage :lnd secwity 
Elvc(ric.11 systcm (Ch,7jJ(ef 12 ) Check  Ope.iltoon 01 "Uhts Check wilsher flUId levels Check  b.1ltery eleclrolvle lev el 
Every 12000 miles (20000 kill) or 12 mOll1hs - whichever comes first 
III .1(/(lIlioll 10 Ihe 6000 m/le sciler/Ille 
Engine  (Ch.1f)ter 1) Check and adlUSI valve clearanc es 
r"' .......... ~.~-.... ._ •• -.... __ .... . 3lii1&l • 
Cooling system (Chapter 2) Check condition "net tension of 1111011)<1101 dflvehelt 
Fllel sys tem (Chapter 3) Tighlcn inlel IIHlnl lold boits/nuts Check vacuum hoses Check e~hiluSI syst em Check ll1r ctonne. temperature cOllllol  (,I applicable) Renew fuclllllC ' (fuel injec tion models only) 
Ignilion system (Chapler 4) lubricate th e dis'flbulOf (conUlel br eake r models only) Renew the coninCt hu,akcr points (II nppllcJblc) Renew  the spMk plugs 
Transmission (Chapter 6) Check ool/th"d level Lulmc;ue automatIC  1.,'Insmlss,on  IInk:'lue 
Rcar axle (C/MplCt 8) Check 011 level 
Bli/king system (Chaplet 9) Check v,lcuun'  hose 
llliJllc:'l1C Ihe handhlake Imk,loe 
Suspensioll {//j(J swelill!J (C".1plt~( 10) Check condItIon and hlllSlon o f POWI.II ~I!'tllllli dllvthtl1  (II  .1l1pllcal, 
Check  MlspenSlon  101 we;" ;111(1 d;1Il1.1!)e 
Bodywork ,1I)d fillings (Clwpler 11) Check opera lion of all locks Check secu.ity 01  dOOf check sl.aps 
LlIl)fIcalC locks. door c heck S\','P5  :'Ind fuel  fdler cap flap 
Check underbody pr olCctive coalm!) 
Electrical system (Chapter 12) Check Opcra1l0n of all  eleC111!:al IIcm5 
Evcry 2<1 000 llIiles (40000 kill) or 2 yc;u s -\Nhichever comes  firsl 
III ,1(/111/'011 10 the 12000 111"'1 $d'~'f/u/e 
[nyino (CIWpICf 1) f!ell'!W crankC:l $e  e""5510l1 v;llve 
Cooling syslofll (Clwptor 2) Renew COO!:1II1 
Fllel SYS(CIII (Ch, '/pliJr 3) Renew"" II Ih!r elemenl 
TrallsmissiOIl  (ClwjJWr 6) AdjUSI aulom;1\IC  trall5nll5SIOll  h,ake b;'IIld 
Every 36000 miles (60000 kill) o r  3 yenrs - whichever comes first 
III .1(/{/I('01l 10 Illc JJIl'VlOUS schc(/ulcs (",lIc" JJJIJ"ci,bfc) 
Brakillg system (Clwpter 9) Renew hyd,auhc flUId 
procarmanuals.com 

'.to. 
60 C hapter 2 Cooling system 
5 Cooling system -fillinu 
Ensure 111m the cylinder hlot.k  d',1111 pi,,!! IS SCfCWCU "' rumly wl(1 th .. , tlilihe coolll'U system h(')s'~s .1!tl1n POSl t'''1l and secured wIth hose clops. 2 USH1g ~ 1111~IUIC of 45% nnt,hN!IC ilnd b!/)(, wmer. 1,1) the coolll\lI system slowly.  10 nHnlnlise the fisk of "U locks Ellsure  IIKIt the hC;'lC' control IS Wined \0 the 'Hor pOSItIon oll"l'W'~: ,10 IIU lock  m.ly 101m Ifl the hemer 3 On fl,lIly models w i thou I 01" C'P"II~OOIi t .. llk. hll the liuhnlU ' 10 llHi 
hlvel U'llcn III  S!:f.rran 2 then ",ht 1110 Itll,·, ,:,,1' Where nil e~Jlan~lIl1l !OInk .s f,[h:d,  t.:olllplclCly 1I1I11u;  ,;)Ih;no  • .11101 ,.,tn the CilP then h.llll,11 the cxp;ms",11 lank and "JI, the hlle .  ,'" "  (pholO) Notll 1h.11 thl) pressure (:0111 wIlh the Iln"lol" :,..;,1 "'"~, .• tW;II'S be 1111ed 10 Ihe CXI),1IlS,OIl I.,,,k 
I) 01 so"'" "1\\I'''es i'" ,II, 1,1",,01 ~"".'" ", .. y I,,, I'"eti Ifl Ih" IW',h:l hose. Loo~"11 Ihe ~,c:rcw boA"", 1,11""111", ' V·.Io'IIl .",d ,cl'\lII",,, ,I wil,'u hubhle I"·,, W,,,",, 110ws 5 nUll Ih.~ ""\I,n<: al,1 I.'~I "tI,· ~'I"',~IIt~ ·~',.· •. ,I "''''ul,,!>  Ih,,"  "lInw ,I 1U tool iHUII,,1' up til') co(,I.", ' I.·v'" '~!lh ,.'t.''''"r.,; 10 SHCl"," 7. 
6  A,IIi1f{W/fl milliu re 
Ap,lIl I",,,, II,,, p'''I,,''I',,'' .,,,  .. ,,,,.1 1""''''''1  .. ",,(I,t'OIlS ",.1,,0:11 II", usc 0 1 ilnld"·,,,.· I',nvules. II, 11'." I, """",,10 .• 1 I" "IUlI""SI) ':''''CI~IO'' "I Ihe ,:oolu'!1 sy:. I",,, 7. Thc (:ou1l1111 ~y:.lcm I:' ""lIdlly 1I1I.~1 wllh .1 sulu'u", "I II!>'". al1lll,cc~c ;lI,d II.s  'CCOIIIll""lIl"d  Ih,'1 II,,, l":u.",,t"He ,s 111,11"1.1"",,1 
3 Willi 1011\1·111" tvpes olall1,I,,,cl." ""~"""'" '''''''w lhe Cl)o l:")1 "ve,y IWO VCiI'S. W,III ot hel lypCS. d'iI'lI ",,,I ",10" 110" syslcm cv,,'y Iwelv" "lO'lIhs Wh'f.hcver Ivpe.s used, 'I I11\l~1 b" "'llll' ethylclle Ulyr.oll",s" II The lollow".!) l,1ble !)IVe s;o !J'IId., 10 l""I.":I'uu ;l!)aiIl SI  l
~
-..-.. -::-' , . 
I ' 
If 
~ 
Amount 0 1 ilnlilr(l(lzo 45% 40~ 30')(, 25'\', 20'¥, 15'~, 
P ro tection to .J2C( 26"F) 25 C ( I3'F) 16 C (  . 3'F) IJC(·!fF) .'JC(·IG'F) IC(tI.'JF) 
7 iladialOr rCllloval. inspection, dcaninu and relittinu 
1 O,arn Ih" ,:oolll1U S ySICIII  as ~h,s ... 'h,·d ,,' S",:I'OI1 3 
2 flclllo\" II", :."t;I s h  shlcld (,11,"" .. 1) ;011". 'I:III()VIllII.IS fOIH .. "II-. .11" 10", cft l" 3 0" ;,,,I,,!],.II,,, 1,,1nSIllISs,o n 111011,,1-.. 1'1.":,, ., I'.IV 1><·".·,,11, Ill" " . , "ole' """"",. w'l,e till! un ions de.lll ;111,1 '''}!!,' Ih,,,', Oil'! ~ Iv I'''''' II" j"IH! "",h "",I II", '."010:;' 1""0IlS. I .. 1""v""1 110" h,,~ "111,,,,1 .f O'Sf:"""'· •. 1 110.,1<)1' hosf: ,m'I .... I""" "1'1'1" .,1>1" Ih" "~I""'"'''' 1 .,,,1 h"",) I""" II .. , •• ,,10"1110 :, WI",,,, .1",,1,,:.,1>1,]. 'CIllOV!! tl". "',",w~. -."'."''''!! 110" I.", ,tl"",,1 " "w .ati""", IIo"n p"~'I,on Ihc ~h,,,,,,, '''"., II", t.III  1,1."1",, 1,,1"'1"1 l.l Fo< 1:."'" "f ",movnl ;0150 ,,''''''Vo: IIII' troll! •• ,,10,"0'  • "' .... 1 .. I"" "''''')\I'''!! th" ·"."'W~ (,)hOlo). I fl"ltmv,· II", I",,, holls. SP"Il!! .• ",1 11 .• 1 w"·.h,,, .. wll".h ,-,. , "". 11 •• ,  ... It.,101 I" Ih" 1",," ,W(\cllIl1d Iofllll"  ,.UIo.IW' Oll( .;,,,,,r,,Uv. ,."." ""t t. '1.1I11"~I" Ih.· ,."1,. ,1,,,  "'.IIr,x (phUlo,,) H W'lio II,,· ,."10.,1,,, ,,"I ollhe c.". II,VI:"." tl"'.10  ,I 10 ,,,"'0",, IIII' ·.I",!." .""1  •. 1"",, til" "~I"'"'' ",,,h,1 lei 01 • . ,,,,,,,",,-~,,d .111. '" Will(:,. 10 """"" ,"'v 11", IH """".1" II Ih" 'ild':l!OI ""IUI",~ '''p.II!, ,I ,~ h..,u,', h) 1.1 .11, ..... :h,"'!!'1 ,."1,.*,,. 0 ' havc Ihc 'cp.", do"" hy.1 tiOlIr"to, ~1 ... ~:,.,Ir:.' !) II yuu .u,' "",,:w"'\] iln cady ':0<1'.'101 ;,"d YOll "!l"nd 10 t,t  ., I.,:, " ~1"11 lOp 1.11I~ typ". yuu Will nccd Iu fn 111, HXI'.lI1S'OIl contill"'" COil",,, yOll' FCltd oI"ill", lor Ihe COUCCI IYPII all" h""'!1 dt,liliis should Ih,~ .,. 1he C,1~;C. :,~ :0 ~1"":t:'1 se.v,ce kll  w,lI  il1:.0 .,,' "~IIII!CfI 10 Refllllll!1  , .. iI t(Jv(:,s(ll 0 1 ,cl11oval  .• ,,,' t,lIlh" c:l)ohliH SY~I,,'" w .l h ''''e,enl:e 1 0  S,,,;I'OIl 5 On .1ul0"'''I''; ":"'l.'"'~~l(m 1110d"ls IIII' "I' Ih ,· 1';II1"IIHSS'IJII lI",d w,th .et(l.ence lu CIo""I'" G 
S 3 F,IhnU Ihe 'ad,;OIO' WIlh coul:",! 75 Fan s h.oud '(:Ii"""}!) sc.ew (.mowed) 7.6 RernovulU Ihe 1<0111 .adlato r cowl 
" 
""" 
, " 
7  7A Upper .mlrillOI 'n1JUIlI"'U IJ()II 7 7B Lowe •• ad'nlo, 1ll0un1111U boll ("!lowed) 7.7C ReIllOVII1\J Ihe  rJ(MIO' 
procarmanuals.com 

Chapter 5 
Contents 
CIUICh il$scmhty '"SIJoCcl'Qn . Clu\(;11 assembly 'Urn!!ll!) Clutch llsscmhly  lemOY," C lutc h cilhle  .efluwal._ 
Clutch 
Clutch !Jedal rClllovnl illld ,cflltl"U 
Specifictions 
Genera l Type ..... Clutch (lise  (hamClcr lining tlnckncss Clutch  pedal hcc "
Gene.al description 
, 
5 3 1 8 
All manu:!1 transmission madllis covered by this manual  nrc lilted Wilh a singlo dl3phrilgll  SpllJlg clutch. The unit COlllt)riscs il steel cover which is dowelled and bolted to  the tear lace of the lIywheci ilnd conla i.lS the pressure  plnte. diaphragm  spring and  fulCrum  .ings . The  clutc h " iClio n disc is 
ee to slice  along the splineJ  gearllox 
Inpu t Shillt and is held in  posi t,on  between  the flywheel  and the pressure  plate by  the pressure of the  pressure plate spring , Friction linIng  materiill is riveled 10 the d,sc and II has a  spring cushioned hull to absorb transmission shocks and to  help  ensure  a smoo th take oft. The circular  diaphrilUm  spring is mounted on shoulder  pins ilnd 
'Ield in place in the cover b.,. two fulcrum rings . The spring is also held ,0 th e  pressure platc by three spling steel clips which are rive ted in 
posi tion . 
The 
clu tC h ,s aCluated b.,. a cable  controlled b.,. the clulCh  pedal. 
Clutch '0Ie,150 bCilfl"U -remova' and wl,u,"g Filult  (ioilU"OS'S -clutch Generill descllptlon . noutlilc rn,untenanco  . 
SlIlgle (Iry plate.  dlill)hragm sprong. cilhle ·ope.ated 241,3 rnm (95 Ill) 381 nun (0 15 In) 27.01 40mm (1.OG:i 0 .16,n) 
No. Ib l It 16 to 20 12 10 15 
G 9 1 2 
The  clutch release  mechanism  consists 01 a .elease leve. and  a bearing which conwcts the lelease  Imgers on  the pressure plilte assembl.,..  The eHect of an.,. wear of the  friction ma terial in  the  clutch is adjuSled  out b.,. means 01 a cable adjuster at the lowel end 01 the  cable  where  it 
passes  through  the bell housing . 
Dep.ess lng the clutch pedal  actuates the clutch release leve. b.,. means  of  the  cable . The lelease  level pushes the lelease bearing 
forward to bear against thO release l ingels so moving  the centre  of the diaphf()gm sprong within  the annular  rings which act as fulcrum points. 
A s  th e centrO of thO spring is pushed in. the  outside of the Spling is pushed OUI. so Illoving Ihe pressure plme  backward  and disengaging the p.essu.e  plate flom the /tielion disc . When the Clutch  pedJI is Icleased.  the diaptllaglll spring torces the plessule plate  into  contac t w ith  the  frictIon  linings on the d,sc and at the saIne t,me  pushes  it a  flactlon 01 an InCh fOlward on I\S splines . The 
disc is now fuml.,. sandwic h ed  between  the plcsswe plnte Dnd the 
flywheel.  so the d.ive IS laken up. 
procarmanuals.com 

Chapter 5 Clutch 99 
--.;,:;.~.--. 
. ' 
3 I V,,'W 01 Ihe clutch wIth the Ue,IIbox r~movcd 
1 If IH,<:~SS;lIy. ill'" Ihe 
I Remove the ~Jenrbox .. 5 described in Chapter G (photo). 2 Ma,k  Ihe chltd, cove, 
II", ~1'''I'·r ""!I Uoar (photo). 
1 Cili lch assemhly -inspectioll 
Ex;"nIlIO IllI] 1", :lio n dISC lor we,ll ollhe In<:lIon  1ll'lIe"al. for bwkell .j ,;pllilUS. (ilSlull rOll of the rilll "ml we;lr  all the splmos Unless the 
. 1I:h plate  IS In ve'y \Jood  condlliull II is ;I false "cono"'y not 10 hi J 
II""" ono ? The I"ctron d,sc should he ren ewed as as "ssemhly II IS adviscd Ih.ll  th,s co\m;r~ IS prelelahle to lIymB 10 1'1  .. IIew I"ctlon IIIHIlU· :3 Chec k  tho tnJchlned Iilces 01 Ihe flywheel "nd p'essure plate . lithe Ilywheells scoled. II should he relllove<1 "lid m~ch",cd Illhe preSSIJle pl.lIe IS scored. 
cluic h  nnd II si9nS 01 le"ks "re found.  rec t,ly  Ihe  le"ks be/Ole  hlling Ihe 
clutch. 
5 E x nmlllC  Ihe diapl""9fll sprinu lor wear ,lIld <1
be f illed 6 Check  Ihe  release  bearinu for smoothness 01 opcration.11 should be re~son"bly hee. benring in  mind Ilwt II IS pre ·p"cked WIth grease "nd Ihele should nOI be ;lny roughness. or  slac kness. in il. 
., Ch eck Ihe comt.tion ollhe dolCh spigol  be  .. ring  in Ihe end 01 Ihe o""kshillt.  Further  inlorlllillion on this is given in Ch;lpICr 1. 
5 Clu tc h  assembly _ relitting 
Note: A chI/eli CCII(r,l/ising roo/ is required in (his See  (ion. I IllS IInpOllanllhal no od or gre.lse  gelS onlO  th(l friction  mated,,1 01  h,c t,on  diSC 01 on 10 the laces of Ihe  lIywheel  find pressure plalc. It ,~advisi,llle to have clean hands when rel'lIing  the dolCh and 10 w ipe lho lIywheel ;lIld pressure [lla\\!  surfaces wilh clean rag belore 
I~assernhly IS s1
.... , ... " 
'. 
33 One method 01 10cklllH the Slarter  lin!) \lo"r  wlHle \II1SCleWll1U 
the clulCh cover hailS 
• 
Fig . 5.3 Clulc h centr" lising nHllldrel dimellsio ns ISec 5 ) 
" 
" , 
1626 111111 (061 ill) 25101ll11!  (100 1ft) 3175 mill (125 1ft) 
) 
.. , . I .. ~ . 
rI .• 44.15 mm (I 75 ill) IIImil!l(IfII (: ~ 15210111111 (6.00 ill) 
.l/lf!f(!X 
./J?f1. '  , 
.?!<'. , , ..... / 
~/ r .... :./ .:..1('":' 
'''r' ....... , . 
. )i";; ,  i , 
. . ~:.. • j •  , 
/'" , , -.. 
··E 
" 
.. . -
5.2 Friction disc FLYWHEEL  SIDE marking 
2 The friClion disc is Il,arkcd flvwlwcl shit· (photo) and il i$ impol1anl Ihal th is face . which can 11150 be idenl,lled by ils haVing the longe, cenllal boss. ;s plnced againSI Ihe lIywheel.  The cushion springs and reJaining pl"te muSI b(l ollsel away hom lhe Ilywheei. 3 Loca te the Inctlon disc "nd cover "ssembly on t he  lIywheel with the cover cOlleclly positioned on J he loc .. ting dowels (phOto) . If lhe oliginal assembly is being , efllled  .. lIgn  Ihe previously made marks . 
<1 Insell Ihe reta,ning  boilS  I"'ger  Ilghl. 
, 
I 
I 
I 
I, 
procarmanuals.com 

144 Chapter 9 Braking systom 
9 II there Dre no inspec tion  holes, remove the  wheels and drums In inspect  the linings . 10 Where any lining is less Ih,111 the nllnimufll thickness,  renew Ihp. complete SCI 01 re,ll b,~ke shoes. 11 Refi ' the drums  lind wheels as necessary then lowe. tho em \0  thl) 9lOund. 
Ch eck operation of servo lIoil 12 Visually  inspCCllhe  vaCUUll1 hose IClIding hom the inlet mlllllfolll Of air box 10 the servo unit fOf dc\c,iOf1l1lon  and security. 13 Wit h  the engine Slopped. dCI).es s the bra ke pedal several ,imes to dissipate t he VOC U\Ull  hoUl the sorvo Imit. 14 Depress the b'i1kc 11Cdll1 wilh moderate pressure then Sin' I the 
cnU illC . As the V
R/mew fhe /)rilke I/Ilid 21 lJIucd  Ihe  hyd.; ."loc sySle m as d"scllherl III Seelloll 15 ilUOwnl! II", 
Ihe new h ,,,k\) Ih"d to COnlph: lely 1,lIlhe C:"CUtt he"I!1 bled . 22 AI Ihe sanl\) I"ne rcn,uve  Ihe 'Ci" ",ake \I'lOn,s alld check tho  wlu,,,1 
cylonclers  10' leak"IJe. 
3  Front disc pl1ds - renewal 
Apply  t
he handbr
I . 
. ~ .. " ,)  •. :Y. 
2 RemOV(l Ihe hont wheels. 
3 It Ihe  fhnd  level in the maste' cylondel reservoir  is high. when the pistons l1re moved into  thei, respecI,ve bo,es to  accommodate new pi1ds. thO leyel could rise sulticienlly fo, Iho fluid 10 oyerflow. Place ilhsoruent clOlh .1round the reSe,yO". o. syphon a Imlo  Ituid oul. so 1)'Cven tUlg Pil"ltwOlk  
<1 F rollt brake caliper  _ rcmoy'll iltld refitting 
1 nemove the f,on! disc pads i1S tie sc"lJc(/ in Section 3. 2 1111 'S Itll,,,,d,,(1 10 lit ncw Ci1tiper pistoll s "nd/o, seals. dep,ess the tH.1k'J Iwel,,1 10 hlUlU the pistons i"to COI11i1ct with thO (fisc and 
'-.. ~ 
, . 
3 .9B  Fitting  the tenS ion springs 
.--.::.:.:; . 
....... . ~,' 
灲潣慲浡湵慬献捯m 

, 
156 Chapter  9 Brakin g syste m 
Secondary cc1ble (early  models) 5 Loosen 1I1c lock.nut ~nd unscrew the adju stment ferrule  from the right-hand rear  clevis. 
6  Remove  the split pin  and clevis pin securing  the secanda.v caulo \0 the left-hand Icar operating le ve l. 7 htrac the clip, remove the clovis pin.  and withdraw the pullcy wheel from  the lever on the Ical a~le. 8  Remove Ihe cable from  the lever. 
Transverse rod (later  models) 9 Disconne ct the cable from  the righi-hand rear opCfating Icvcr by 
removing  the split pin  and clovis pin. to Uncl.p the cable hom the 'Hlnsvcrse rod . 11 Remove Iho spli, pin and clevis pin  securing the fod 10 the Icft·h~nd le;!1 operating lever . 12 Slide the transverse  rod Irom the guide  on the rOM axle . 13 Check thO {luide bush lor wear and dama ge and renew It il necessary by prising il oul and pressing a new bush irllo POSilioll. 
All models 14 Refining  is a r e versa'  of removal. but lubr icllto the lin kage as )scflhed  in Section 2, and atljl' stthe cable as (fescri bed  in Section 18. 
21 VilCUUrll sorvo unit  -dosCrilHion 
A vacuum servo  unit is linod Into the lir,lk e hydrallirc cil cu il. 111 series with I he 111,1S ler cylinde f.  to  provide assiswnco to  the dllver whlln Ihe brake pedal is depressed . Thi s reduces  the eHolI le{luired try the driller to oper,lIe the brakes, under all brak ing condi tions . 
This unit  operates  by vacuum, obtained  from Ihe indu ction mnni rold and comprises basicall y iI booster diilphragnl and check lIallle . The servo unit  and hydraulic master cylinder are connected 
t o gether so that th e serllO unit  piston  rod acts as the  master cylrnder pUShrod. The driller's b rilking ellon is trilnsmitted through allot her PIi ShlOd 10 the serllO unit  piston and ils built-in COmrol system . The scrllo unll pislon  docs not fit tightly inro  the cylinder. but has a strong ,lltl flhril!Jlllto ke el) liS edges  in COllst ilnt COntaCI with I he cylinder Willi_ 
23 rilult diagnosis -hrilking system 
~ylllptom 
-'ceSSllle ped,,1 u;tllel 
nrakcs pull 10 ono Side 
Or;tke ludder 
E~cessive eHor l to stop car 
so ensuring an i1inigh t seal between the two parts,  The fo rward 
chamber is held undelllaCUUm condi tions cleilted in  the inle t manifold of the  engine and during  periods when the brake pedill is not in use, the controls  open a passtlge 10 the rear ch ambe ., so placing it  under lIacuum conditions as well. When  the b.ake pedal is dep.essed. the lIacuum pass.Jge to the rear chamber is CUI oH and the  chamber expos ed to atmospheric  pressure. The consequent  rush 01 ail pushes 
the servo piston lorward in tile lIacuum chamber and  operates  the main push rod  to the m.Jster cylindcl. The controls are designed so that  assistance is given  under all condllions. When  the brakes are 1'101 requ ired, vacuum in the rear chamuer i s  .e -es tabl ished when the br.Jke ped.J1 is released . All air Irom the atmosphe.e  entering tho rear ch.Jmbe. is passed through II sma ll air trlter. Und er normal opcr.Jting cond itions  tho IIflC(IUm serllO unit is lIery relraule and does  not require ollerhaul e~cepl at IIcry high mile,1geS. In this case it is far bcner 1 0 o bta in a serllice e~hange uni l. r,1the, than rcp;ti . the o,igi'lo11 unit . Although inlernal components  we,e once .Jv'lIlaule 10 ' ovcrhauling  purposes this service has no w  been 
d,scont,nue(t . 
22 Vacuulll servo unit _ remOlla l MId re filtillg 
I RemOIlO the master cylinder as desc.ihed In Section 10. 2 D,scolllwc l thc vacuum hose from the non·return lIalve on the serllo \lI1it. 3 Work i,,!) insido thc cal. remOlle th e lower l;t cia panel below the stccring column. 4 E~tractlhc clip and l)ul1 outlho clellis pin attaching Ihe push.od to the l ootu .ake ped;t!. 5 Unsc.ew  the nuts  securing  thc mount ing b.ack.et to the bulkhead. 
then withdraw thc serllo unit  and bracket from the engine COlllp,lJtlnen t, 6 UnSClew th e nuts ar1(1 serlar,lle the braket 110m the SCIIIO uni, . 7 netrning IS;t rell e.sal 0 1 remOllal w ith leference .Jlso 10 Section 1 0 when retrumg Ihe master cylrnder. 
Renson(s) 
RC.Jr blake self adju sting mechanism faulty All i n hydrilulic system 
WOIll or cont,llllina led /rnin{Js Seized Caliper or wheel cy linde r 
E~cessille run-out or distortion of discs o. drums 
Worn Of cont aminated linings Brake backplate or caliper l oose WOIll suspensio n bailloints 
SerllO unit faulty 
Worn  or conwmin.Jted linings 
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procarmanuals.com 

Chapter 10 Suspension and steering 161 
fig. 10.11 Drivebelt [ldjustlllent pulley holts on 3.0 litre models -arrowed (Sec 2) 
2 Routine maintenance 
At the "*',vals spec ,f,ed  III the Routine MainhHlance $()(;t,on in the front of til() manunl c,lIIy out the 101l0wlIl\j p,o(;cdures. 
Check lyres for illflalioll, wear and conditioll 1 Check [lnd If necessary adjust the tyre  pressures . 
2 Check [III t yres for WC[lr and condition with referenc e to Section 21 
Check power steering pump drive belt tensiof) 3 Check thm the deflection of the drivebelt m,dway ulon!) its lonyest nlll between upper pulleys is approxirn
(photo). 
Clwck puwer steering fluid levef (lnd hydraulic huses II  pOSStble the level should be checked w,th the Buid [It  nOll1lal 
uper,\!mg tClIll)Cr[lture . 6 On c;lrly modcls unscrcw the wing nut nnd relnove Ihe rese,voir cover ilild uaskel. The flu,d should be up 10 Ihe MAX level  mark on the 
reservo". 7 On later models, wrn tht! hiler C
Fig. 10. 5 Topping·up the power steering reservoir on early models (Sec 2) 
8 Whele nec.ess.1'y ~dd Ihe ~pccilled lIU1d to bring Ihe level up to the 
correct ,nilrk. 9  ChC(;k  the hydr[luhc hoses for comJit,on and security. 
Check steerinfj ,-md suspension components 10 n,ll$O  tilt) front ilno reM 01 the Cill or position over an inspeclion pn. 11 Check the SleetinlJ wck and t'e 'rods for d[lm3ge und weM. Also check the wek HJbber bellows and track rod end rubber bOOIS for spfilS 
ilnd leilk[lge. 12 Chec k the front ,md reilr suspension components lor d"m.Jge [lnd wear. In particuf;lr check the front suspension tr.Jck control Mm ilrod stahiliwr r"bber mounling bushes. Usc a  lever to check that there  is no excessive we[lr III the Iron I slispenSlon lower IJ[ll lJoints which Me 
"'\()\JIill wnh the track conlrol ilflllS . 13 Check the operat,on of the I,ont ;IIHt rear shock absorbers This is 
be st ilchievcd with thO} Cilr on the \lfOlind by depressing euch corner of the ca' 1111\I1. On 'ele[lsil\ljthe C()"H~r helllU checked Ihe body should ,,~c thell s"llie IIlIl11ed,mely on ,t~ way down. II there nrc sever.J1 ()sclll;ot'ons the sho(;k  absorber IS weilk nnd should be renewed. 
3 Front hub _ removal. refitliny and bearing adjustillent 
Apply the h[llldhr[lke then Jilek tip the front 01 the cm ilnd support 
on axlt! standS Remove til(! rOildwhecl 2 Rernove the front ul;lke CJllper With ,elerence 10 Ch.Jpter 9. Whele the flex,ble br[lke host! is connecte(t dueclly to  the cililper ther e IS no need 10 disconnect the hose i1S thO} caliper  can be suspcnded by wire 
aWily from the diSC. 3 By calelul 1
" :<>,:,~,. 
Adjusting the power Sleering pump drivebelt tension on the 2.8  litre engine 
2.7 Powcr steeling filler  c.Jp/d,pstlck for the 2.8 hIre engine 
3.3 Removing the dUSI cap from the front 
hob 
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