wheel torque FORD CAPRI 1974 Workshop Manual

Chapter 1 Engine
: Part B: 3.0 litre engine
General
)
rr
T ype .. Bore Slroke
Cubic capacoly .... Compression 111100
cylinde r block Bo,e dlnmCler mrn (In): $wndMd urnelcs. A B.CllndD DverSilC {)Inel!} A
Cranksh aft Endllonl mrll (III) ..
Camshaft ThruSI plate tlllckness mm (III) EnclllO;1! 111m (In) .
Piston s Clearances III bore mm (111) nlllg gap mm (tn) Top .. Cenue BOllom ..
Connecting rods Blg·end hea,ony running clearance mm (In)
Valves Seill :myle . V,llve clearance (cold) mm (m) Inlel .. E~h<l&#34;sl V,llve 111111(19. Inlel openS Inlel close~ . hhanS I opens ExhaU~1 closes T.1Ppel s.de clc,u<lllce 111m (111) V,llve $P""l) Iree lellUlh mill <nl) SICI11·IO·\llIldc clCilr,lllCC IIlIn (Ill) Inl el E.h;IUSI
Lubric<Jtioll system C,lp;lCny
W'lh 1,ller W'lhoUI "iter ..... " .. 0, prCSSllle (nllillmum <lI 80 C).
750 'P'" 2000 rpOOl
Torque wrench settings Ma,,.. be",IOO C.IIl S ..... . B'o -end Cill)S .... CrMllsh<lh pull(!y . Cilnlsh,1ft IJ(lil' ... f Ivwheel,'(h Ivej)l" te Fronl Cove, 0,1 I)UI11Il "n·d J)i~&#39;;·.~J;
0,1 pump cove,. . ... , ........ . Sump
Cvlind e, l1e,l(1 boit s .. SI<lge I Slage 2
S iage 3 (nite r 10 10 20 mlnules wart) ;Iau(! ~ .• ,., .. , .•.• ,., ...• ' ., .... , ., ... , .. ,. ,., .. , .. R laue 5 (,!her running englllc fur 15 rlllnu!t:s ,11 1000 ,pm) OCker cover Dd el'JIlI p1uy·· .. . . ..
n",), 0.1 senl cill/ie ,
6·cytonder ohv in 60' V 'o,mallon 9367 rum (3688 in) 72 .42 nun (2851 In) 2993 cc 89· ,
936·17 10 93 658 (3 68o!) 10 3 6873) Illcrements of I 0010 (0 0004) 9 4036 10 !"I4091 (37022 to 3 70" 4)
0080100780(000311000110)
533'\105384 (0210 10 0 212) 0153100254 (0006\10)
0036100051 (000141000020)
0254100508 (0010 100020) 025· 100508 (0010100020) 025·1 10 0 38 1 (0.010 10 0 015)
0006 \0 0.064 (00002 \0 0.0025)
032(0013) 055 (0022)
79 B mc 67 ABDC 70 UaDC 14 ' ATOC 0013 10 0 05 1 (00005 to 0 0020) 47955 (1.8880)
0020100063 (00008 10 0 0025) 0048100050 (00019 10 00020)
500 hue (88 prill) 1 25 hIre (75 pml)
10 kUf!cm' (14 .2Ibl"n') 2 8 kuf/cm' (398 lbl/in')
Nm 68 \0 76
53 \0 59
55
10 62 551061 69 to 76 1510 18 17 10 2 1 8 \0 12 8 1011
10 301050 82 10 92 110\0 1 17 11010117 3105 27 10 34 16 \0 20
Ibf ft 50 10 56
39 10 44 41 1 046 4 1 1045 51 1056 11 \0 13 13 1015 6\09 6\08
7
22 1 0 37 61 10 68
8 1 1086 81 to 86 2 10 4 20 to 25 121015
25
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7
Chapter 1 Engine
Fig . 1.1 8 R ear oil sen I ilnd ildaptcr pliltc (Sec 84)
84 Renr oil se;1i ,,,,(I lIywheel - rc fitti"u
1 I'll the ()n!J&#34;I(~ .r,," ,,(1"1'10' pla1<:1 and s(:clIre ,I wllh 'I S IIv(: holls. 2 Smenr en\J1ne (ld OlltO the CI,mkshah '''". Smear 0,1 on the lip 01 the sea l tlnd pos(( lon tlon ';".11 on th e cran hha ll. 3 Align the seil l c;""er holos wllh Ihose 011 the cylrnd(:, hlock . Insell the loul bolts and 11!lhlCll Ihem 10 the SpeCifIed 10lqUfl 4 F it the flywher.:l . or dllveplalc on au lOlllallC lwnsrnis sion Illodels.
InSerll h e six holl S ;",d u\llole rllhem 10 Ihe 10 lque w rench sell"'U Uiven in lhe Speclllcm'olls
8 5 Sump -rciiuill!)
En~&#34;,,, lh;ol Ill" ru,rI "'!) ',u.l,u :e s 01 hoth IllI.! Slimp a"d t h e c(,1nkcilsc ,lie cl ea" ,mol IIi,1I n", '.""I",!) SlIrJ ,u;e 01 the Sli mp IS not d'S lo lte d. 2 Apply IO" ,I,,,!! c"'''pollnd 1 0 the pOUltS wllel(~ Ihe l"llllll) cover ablilS lhu ,;yir r"lr" 1,Io ck .lIId where Ihe rea' 001 $u,,1 carr.(:r "dIOIllS II 3 Pln ce tloo \J,,~k&#34;l '" fJo~.t.on, lIt tlo" SlIm l} ,'Ild IIlS(). 1 lhe r0Io1111il1l)
bolts ImUO I tl!lhl 4 PrO!lres~lvely 1I!llIt,," llw sump holt s 011 opposIte I'ilr ts lIllt,1 all 0 1
t
hem ,H" il l tl", ~ 1&#34;&#34;:lllI&#34;d IOlllUU , 5 FII ,1 now w;,~h&#34;, 10 Ihe ~Ul1lp II"'UI pili!) , IIlscrl lhe dl,lIll pllll) and
t ,uhlen ,t
8 6 Cylinder h e"ds re;rssernbly
L~y the cylrnd" r h",.\! on .IS s Ide. luhrrcnt e cvcry valve Uu ide with eng;l1(! oil. ,lilt! ,&#34;~,,&#34;t the valves 11110 the \Ju, dc Irom whIch lh ey wele remov(:d 2 To ,WOld d<l(11;U)III\) lhe II p 01 the stern 0,1 sonl , with consequent rncreJsed 0.1 con~UI1&#39;ptIUIl. wrnp <I p.cce 0 1 ndheslvc wpe. or fo il. fOund the \JrOove o f cvery v,llve SWill Sh( le lhe scn ls over t he valve sIems and push th clll over th.: lupS of the vnlve u",des 3 Remove Ihe &#34;dh&#34;~lve wpc. or fOIl. horn Ih e vnlve S1(~I1IS. 4 F,t the valve sp"nl) ovc, the valvc. Wi lh thc close cOllcd end 10wnrtis the Cylrnd er head. lhen fll thc sprin\J relarne r on top 01 lhe
sprlll\). 5 US1ll\J a vnlve ~prul!) compresso r. com press lhe splln\) lus t enou\)h 10 inse,t the IWO Splil COIl,,15 If lhe vnlvc spml(j is compressed 100 filr.
lhero.s dilnlJC' oltl1<.: ~I&#34;&#34;IU rcW""C' dillllil\)IIlU tllC villve SHlm 011 sen l
G Ahcr "lsert")!J tit" ~pllt collets. r eleilSo the spllny compressor (111(1
rcmove II 7 C hcc k th"t lh..: ~pl&#39;l cull":IS hilve seilled properly and t<lp the top o f
t he v"lve S1C1lI hUhl1y w llh a plJstrc headed hJmrne, to ensure 1I11S,
Fi g. 1.1 9 Tightening sequenc e for cylinde r head bolts on the 3.0 litre enuine (Sec 8 7)
a Repe"l liln pruccdwn orven III p;ua!Jrnphs 1 to 7 o n the (CmJlnlllU
v,llv"s
87 Cylinder heads - re fitt;nu
11 the tappels w ere rcmoved. luiJricnle lhe lilppets nnd I heu hores wnh enoine orl nnd insor t thOlll wilh lhc;, d Ished cnds uppermost Ensule lha l every tappet ,s rclltlcd Into lhe hore hom whIch II wns
t nkcl1
2 Mak e sure tha t Ihe rna t"'!1 surlaccs o f lhe cylinder block. cyl lndor henrJs ;Uld 1111,,1 Ill,lIlIlold ;lIe de;"l. then plnce new cyhndcr head \Ja~kets ove, the Wildes un thn cylrmh" block. Tho cyirnder head \I,,~k ~IS beilr thO malkln\! TOP f:nON T ilnd nced to h e pOSII,oned
cOII(:ct ly .
3 Low ul Ille cyl ""lcr he,1ds ov"r the" posl tlonrngst u(!s, Although t he cyhlld\~r headS ,"0 Id entlc;,I, they should h,lVe been Illtlrke d when remuved ilnd should be lehllUd III thcrr ()IIUinal positions t1 Inse rt the cyirndcf 11I)"d boilS f"'!I(:r t.!Jh l then tIghten lhelll prUglC SSlv(: ty OIl the olde, shown III r,U I l!J and III llle stnucs",s U iven
m the SpcelirC;lt'OnS
88 Rocker arms and cover
s -refiUing
Ensure Ihm "II Ihe puslllOlls ,lie ,nselwd I!ltO the" p'llpor placos ;II1<J lh at thc" lowcr ends nle on\J"gcd in the ClipS o f the t"ppelS 2 Place the roc ker arms over tho jlllshrods. fIt the fulcrlllll seMS and ;ldllJS 1o r nulS. an d liuhten the ntl)usting nulS !"'ger light 3 Se t No 1 cyllllder at TO C <Jnd reh t the dis tllbu tor (see ChilP1C' 4) 4 I\dlust the vil tve clea ra n ces as descrohed in the foll o w rng Section 5 FIt the roc ke' covers , uSlIl g Ilew \Jilskc IS . ens uring tho t the gilskets arc senlOd e venly n il round l ho cylinder hend. Fit the cover altilchlllont
l
)olt S nntl lighten them t o the spec ,f led torque.
89 Valve clearnnees -checking nnd adjustment
R eier
to SeC!lon 3 5
90 Engine ancillaries -refitting
R eier 10 Sec tIon 46 and ref, t lhe I. ste d componenlS w,th refercnce
to th e Chaptels ind,cilte(f
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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 "<lvel
Torque wrench setting Pressure plate (Isscmhly
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.
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)
Chapter 7 Propeller shaft
Contents
Cenl,C be"wl(J rCl1<,w,,1 !':HlII d'''!I(lOSIS 1',01'"11,,, Shill, Gel,..,,;!1 li('SCIIIIIIO"
Specifications
Type
Torque wrench settings C{:II(,,, I,/!,,, ,,,! )
(',op"lll:r shall (" "',II i,xlc I I,moO]
Cello!',,1 duscriptioll
3 , ..
o"V() IS lI&#34;Il~&#34;&#34;w,d 110m III!: HP.;uh<)x 10 thCIVill ,"xlc hy mpdns "r " r",,!ly 1)"I,lIlted two 1''',Co) tuhul;1I p,opcli.:r ~hafl The u 'Hv""Si,1 JOlin ;" 1he 1'0111 of tile ,hilh IIH:()rpOI,lICS;) sphno"r yoke winch IS,' ~hd&#34;&#39;!II&#39;1 Oil Iliu \lUilllJu x "''''''SIHlft A (w Illel lIIuvcrs"r lUll)! ,11 11'0 leill uf the f.Il,1f1 IIl(;orpOr;\I(!s iI [lill1lter! yoke which IS holled to the Ie", ,1xle drive !lilll\IC The honl ,111<1 "."" sh"hs illU cOIll"'cl(,d vIa a COI1~1<I1lt vulo(;lIy )'''''1. ;lIlt! ~ ccntre bC.,roll(J IOC<lICd 011 11,,~ ICHI 01 the 110111 shalt sl1ppnllS lit,! nsscnlllly on the \. nriCII>ody .
!'wpldlc, ~h;!h ,ctl1()v;)1 ,md rcf,UIIlU l)n,v,,,,,,II'''''IS '""pectln!) 2 .,
TWO'IHCCll tl1l>\lI., •. w llh lwo HMdy,Splcer type uillvelsitl 10lols an d 01'(' COIISWII1 V"loc,ly (CV) ccnl.e 10"'1. CC"lIC SUppO' 1 IUI;II">!)
NIIl 1 B 10 23 (;0 hI tj~
'1)111 13 10 17 114 10 48
II", 1110) ",11." ,hol!1 ,,,uv,,,s;r ) )OUlls C;IP"lOl hc ICllewed wllhoul ,purloll "'l"'Pllh:ll1 hcciI",e Ihe )01111 s pldels ;IIC sl"ke(1 11110 Ihe yokes ,n i> I'OSl1l011 dUWln)lnud dUlln9 elccl ,olHC h;>l;lI1cin\j When 101111 we;u IS dd,'Cit,d (seu SectIon 11). "ilher .1 new IHopelh;. sh~1t should he ohl;"""d. 01 lilt) cOlllpl{,tc plopelle. shah shQuld he p;rss~d to;> SIIII.IUly
equI pped el1!).necIIt>\j wOlkshop lor I~pn&#34;
2 Propeller sh<lll ~ rClllov<l) nnd relitling
Chock hOlh IIonl wheels Ihen )<lck up Ihc IC<1l 01 the citr .111(1
F
ig. 7. 1 Two-piece propeller shaft showing tubular section (Sec 1)
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Chapter 8 Rear axle
Contents
Axle rear cover .. lemoval and .etliling Axlosha!! bearing -renewal Adcshah -removal and refltllng . Fnul1 diilgllosis -re3. ,1xle Gcncr<ll description. Limited-slip difterenlial -generill
Speci fic", iOl1s
Gel \cra' Axle dcsI\)n<lIoOIl _ Type
Hallo . uhllei'ml C"llilClly •• I>IIC;1I11 type. O ,lIcnmll.1I sIde 90;u ('"dllo;u 1'''''011 turning torque (~ell&#34;llJ) Crown wheel and pill 1011 backlilsh
Torqu e w re nch settings Bc,uinu (31) \0 axle Cilsing Cover \0 axle caSing CrOWllwheel Axlcshalt bearmg retainer /backplate . Drove pinion nut ....... ....... .. Rear 51),ing U·boh Stabilise. bar clamp boll _. Propeller shnfl 10 lear <Jxlo drive flange
General descrilHion
6 !i ,
11 1 10
The rear axle IS of the hypol(f seml·floallnO tYI)oO and is located hy semi·elliptic ro~d springs, In conjunction with a smhlliser har. The dilJerel11inl is intogral Wllh the axle hOUSing and Ihe rear axlo
InuSt he removed to carry out ilny rePil" S to the dll1erellt,,,, wh,ch milY hecorne necessary . J The drive pinion runs in two lapered roller UeiltlllgS, which are "reloaded by a spacer . Early a.l"s have a ',xed lengltl Slh'lcer and I<lter ones a collal>sible spacer (F'{ls 8.1 and 8 2). Both IYlleS of SI>aCer are InlOrchangeable. but c<lre mUSI be taken to ensure th<ll the appropriate
nle lhO<J of delerm ining drove p'nion bcarrng preload is used
The COrfeCI deplh of me~h 0 1 the p,nion in the crownwheel is
PUlIon 0.1 so,, , renew"l . fie;]! .1x10 ove.h;wl Ilear axle ,emOYil. and refIlling f1ollll!w 1ll00intCIHlIlCC • Wheel siud renewal,"
() (Sahshury)
7 8 3 2 ,
Ilypo,d. sem,·flo,lIU1!), onteorill dolle/ent",', limited-slip dollelenl,')1 on 28 Speciill 300.1
I I loire (1.0 l)il11) SAE 90 015 mill (0006 'n) 2510 2 7 N,,, (I 8 to 2.0 IIlI tt) 010 to 020 ,nm (0004 to 0008 in)
Nm 60 10 68 35 to 45 801087 27 10 31 100tol20 25 to 36 401050 60 to 65
Ibl It 44 to 50
26 1033 501064 20 to 23 74 to 89 18 to 27 301037 44 10 48
obwined by Ihe use of selected shims inserted belween Ihe pin ion and rear t<lpered loller bearing. The crownwheel is boiled 10 Ihe dilferen lial c ase, w hich is mounled on IWO lapered rolle r bearings . These bearings ilre preloaded by selec tive· fil shims, positioned on eilher side 01 the dlfferenti<ll housing The d'fferential <l55embly is 01 Ille two pinion Iype, 28 Special models ;lre filled with IIlimiled'slip d<llerential. Th e adesh<lfls are splmed co ehe dlHeren eial side gears <lnd supponed at ehe oule. ends by b<lll· bea.ings . 011 seals <lre filled .11 each
end 0 1 Ihe axle housing . Ove.hauling ehe lear axle requires a variely of spedallools and it is no! recommended Ihal any allernpl should be made tfJ do Ihis unless these lools ~re <II hand,
d
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m
)
Chapter 8 Rear axle 135
Fig 8 .8 Drilling the beMing rf!t<lining rino prior to splitl;l\g with ,1 eol ( 1 chisel (Sec 5)
6 ju sen the ilxlesh.1h "nd CIl!jol\JC the spl"u,d end of Ilu) ~h;,ft Wit I! the ulHcrcnliJI side gC;II, TilP tile shnft wllh <l mall,,( lIIl(,lltl(lI)C<lrill\j is
fully entered III the c .. sing. 7 Align the backplilW ,md be,1"'}!) rC1<lUHH holes with the C.1Sll1g holes. insert the bolts ilnd li\Jhwll them evenly 10 the spccllicd torque. S Relit the b'<Jke drum t1nd fCil' wheel <lnd lower the CM to the
ground. 9 Check the 'Cilt axle 0,1 level and lOp up II necess ary,
5 AxlcshiJft homing -renewal
Noto: A SfJL'CI.1f 1001 IS "Hlliller! /0 n&#39;III<!V~&#39; lilt' 1>1:''''''[1 (,0111 lilt' axles/mIl (s,:c Fly 89) 1 Remove the ;,xlushalt as ,h:sG"hcd 1(' St;CIl0n 1 2 Usin\J all 8 mill (0.31 In) dldl, 1Il;,kc a hole III the he,Hlnt! ,etauun\1 119 . t<lkllllJ CillO not to p,,"eto;Ito Into tlH~ .1xlesh"l!. 3 SupPOI1 the 1m\) 0" il v,ce thell spl>t 11 ;1{;II)SS tho hole with a sholp pllJ (;h,sel. RUlllove tlH~ ""9 hom the shafl ·1 PIC'SS th e l>earinIJ oH the shall lJSIIl\) " sUlt&#34;hl,~ jllJllcr or press. The specil1l Ford tool is shown '" FlU 89. 5 Remove lhe I>e,'''''o ,eiJll1e,
G Cleiln the l1xlcshnf1. be,non\) ,,,t;WlC' ,Hld "xle C.,1511l\) 7 Locl1le the loe1ll1ll9 HIWlIlel 011 the l1xleshl1lt. followed uy tho new uoa,ing wIth the 001 sel1l [l1CIll\) l1WilY ['om the l1~leshaft Hallge. 8 Slide on the new hea'lIl\) rcta"lIn\) '1119 and pr ess J fully 11\l111l1st tile hearing inner IWck. uSIng a slJItJIJle puller or J ICWlth oftuue. 9 Re fIt Ihe l1xleshalt wllh refe'ence to S ectIon <1
6 Axle reM cover relllov,,1 ilnd refitting
Chock the hont wheels then lilck up the re,l( o f the Cl1r il'l(l SOPPOI1 on axle stands.
2 Cl em1 the reM cover .Jnd surroundIng .Jre" (photo) 3 Remove the hllmlbr"ke relay le ver lind seco nd.Jry cable. or
transverse ,od (as ;;Jpplicilblc) with reletCnce to Ch"pter 9. <1 Place a suitable container helle~th the reM "x Ie to c~tch the oil as the rear cover is removed.
5 Undo and remove t he ten IJOlt s and sprinU washers lhilt securo the reill cover to the llIl,l l drive housillg LIlt aWilY th e re"r cover and its
\Jasko!. ~ Before refitting the ,oar cover Illilke sure thm the mating fJces ilre free of th() old Uaskct or 10nlting compound.
7 FIt a new uasket Jnd then the lea, cover and secure wIth the ten bolts and spring washers. The cover bolts protrude IntO the fillal drive hOUSor1U so it is important that a SUlwble oll·resist.Jr1t scaling
... __ ro*
Fig. 8.9 Usill(J the special Ford tool to removc the axlesllilfl henring (Sec 5)
r;olllpoulid IS SlIll:ilr() d onto lioe Ihro,'ds of each boll bef ore it IS [,twd. 8 TIUhwll tllr: cover secu,,"!.! holls 10 lhe spec,[,ed torque Wfl:IICh
se ttln\)
9 ReCOlillect
Iht! h,lndbr,l~e components with re ference to ChJp ter 9. 10 R efil l ti,e 1e;1I ,ule with the correct 9rJde 01 oil then lower the C,lr to
the UIOUIl(i
G
2 Axle reM cover
7
Pinion oil seal -re"cw,,1
This ope r,ltion may be performed WIth the rear axle in position or on
the benc h
2 Undo ~nd remove the two holts. sprinU Jlld plain washers that secure lhe centre bearing support to the under51(fe of the body (reler to
Chapter 7) 3 With a sc"ber 0' fde. Ill<lrk a 1000e across the propeller shalt alld rear ~xle drive fI~nu()s so thatlhcy Illay be ,cll ed \()gelloer ill thell o&#34;gin~1
positions <1 UndO ~nd remove the four bolts Jnd sprinu washers secu"n9 the propeller shalt and rear a~le dlivOllg flanges and carefully lower the
propeller sha h to ttt() flool I I
J m
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•
Chapter 8 Rear axle 139
ci,cumS«"Ulces mny only one pmt of the two be renewed. fnspect the dllfe,enti,ll pinions nnd side gems for signs of pitting. score mMks. Chipping nnd general wem. Obtain new gears as necessa,y . Inspect the th,ust washers lor signs of weM or deep sco,ing. Obwin new thrust wnshe,s as necessary. Once the pinion o il senl has been disturbed it must be discMded and a new one obtained. 20 When new pnrts have been obwined ns required. reassembly cnn begin. First lit the thrust washers to the side gems and place them in position in the differential housing. The ground side of the thrust washers IllUSt lace the side gC.Jrs. 21 Place tile thrust wilshers behind the dillelentini pinion genrs i1nd mesh these twO Oems with the Side gears through the tWI) ilpertores in the lilllerentlill housing. Milke sure they ilre diametlicilily opposite 10 each other. RO«l!e the clillerent'i11 pinion gears through 90' so brinUlI1\j them into line with the pinion genr shnlt bore 111 the housinlt 22 Insert the pinion genr shnft with the lock In!) p'n hole III line with the pill hole. 23 Usinu leeler 1),IU!Jcs. measure the en{lll(",t 01 ench s,de Be,,,. II the speclficd h\Jure IS excecrt"d. IU!W tl&#34;u~t washlllS mu"t he olJt,uned
-omnlllie the a~~el)lhly ,lg,llll ,trld ht new thll,st wa:,lu'<IS . Lock the P""O" near shalt U~I&#34;\I the pill whn:h should hc wpped hilly h01)1I, UStrlO n SlIlIah l" d,a",,:ter parallel pill pUIH.:h. Peen ()V,,' thc ()I the p", hole to stop the pill WOlklll!J liS wily out t." The tlowllwhcui m;,y next I,,, Idllted F,,~t heat 11 101 nppro~I&#39; ","lllly 10 nHIHltc~ III 1I0111IIIJ W,lter Wipe the ,,,nl"IIJ l aces 01 the c,ownwhuui ,Ind dllferuntlal houslI'U ;,nd. II OliOlnal p,lItS ,lie l,utnU used. plate the Clownwlll!cl tnto p(l~ltton With the prev,oll~ly m,llie marks nhOllud Relit the elO1ot IHlllS th;11 sucule the ,;r()wllwlwel ,trld tighten Ihese III a I"og'esslve and dla\lunill rlt"nner to the spe.:,fled torquc. 26 PI<lce the Shlill packs b<ltk III thell Oll!)lnal foiled pOSition on the differential housing be<lrlllU IOC<lllon USllllJ .1 p,cce of sUlla!Jle diameter tube ve,y c,1refully ftt tim d ifferential housln!J bearlllgs with the smaller dlnmeter 01 the taper outw,Hds The hearing t,lge must nut in nny wny be dilrllnged. 27 PI,1ce the shims hehllld the hcnd of the pinion geM nn[1. using ,I
suilahle dinmetci tul!c . cmclully lit the larg"r ti!per rollI)' benllll\) onto Ihe pillion shafl. The lar\ler dlilllleter 01 the be,lllllU !\lust be nex110 the pInion head
28 Using soitable diameter tubes. fit the two Wper roller bearing cones into the finnl dlive housing. making sure that they ale litted the correct way round. 29 Slide the shim and spncer onlO the pinion shalt and insert inlo t he final drive housing. 30 Relit the second and smaller diameter wper loller bea,ino onto the end of the pinion shaft lind 101i0w Ihis Wilh a new oil seal. Sefore Ihe senl is nctually fitted. apply some grense to the inner Ince between the two lips of the seal. 31 Apply n little jOinting compoond to the outer Ince of the seD I. 32 Using n tuhulilr dllft 01 suitable dinmeter, carefully drive the oil seal into the fillal (hive housinlJ. Make quite sore thnt it is lilted squarely and flush with the housinU. 33 Refn the drive pinion IInnge nnd hold securely in n bench vice. It II fixed lenIJth spncCl is Itlted. fit ilnd tighten the pinion nut 10 the spec ,lied lorque. If a collapsihle spnce r is f,tte d. follow the prOCedlHe
g iven in Section 7 paragraph 14. setting the pinion turning to'que to hetween 25 nnd 2.7 Nnt (1.810 2 0 Ihf It) which includes 0.2 to 0.<1 Nm (0.15 10 0.30 Ibl It) lor the ndriitional friction of the new oil senl II new hea,inns h~ve heen filted. logether With n li~e(l len(Jth SP,lCer. check thm the tOrlllllg torque is bel ween the limits just stmed. If not. a longer or shorter spilcer must he I,tted until the setting IS correct 34 Fit the healing cones to the cf,fierenllal houslIlg heallll(Js and carefully ease the housing Into posilion in the finill drive housmg 35 Relit the be,IIII'!J CilpS in thell originnl pOSitions. Srnc,ll n httle JOlntmg compound on the threilcfs 01 each cnp secuIII'O bolt nnd fit 11110 position. When ,111 low halts have bcen rein ted tiUhten these up in a (h"IJonal and progresSive milnne, to the speCi fied torque. 36 I I pOSSIble. 1Il00nt n dlnl in(licntor onu(Je so thnt the probe IS resting on one of the teeth of the crownwheel and determine the backlash hetween the clownwheel and pillion. The bileklash may be vMicd by elecreasll'\) the thickness of the shims bellind one beilling nnd incrensing the thickness of shirns behind the othcr. thus moving the crownwheel ;nlO or out ofmcsh as requi,ed. The tOt.llthlckness 01 the shims must not be chnn\)ed. 37 The hesl check the do·it·yourself owner cnn make to aSCerta", the correct meshinu of the crownwheel ilnd pinion is to smear ,I htt le engineer's blue onto the crownwheel and pinion iJnd then lot"te the pinion. The con1<lct lIlil,k should nppenr rl\fht ill the Iluddle oJ th..,
COlleCI 100110 CO"t.1ct
_
t Heavy conWCl 0" huel. at 100lh !,leu Move p'",on lowa,ds crownwhcd u:.!:.crt:1 3nd c,ownwhuel towards p,n,on
.~\;!~&#34; •. ,;.';,;,"",.,=,"--
l ' Fig. 8.17 CrownwheeJ and pinion setting chart (Sec 8)
, ,
, ,
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procarmanuals.com

Chapter 8 Rear axle 141
lings apm! and compress the clutch plntes. The nction is varinble. depending on the power npplied. so tlMt under full power the dIfferential will lock completely nlld full torque will be appl;ed to both
11 Fa ult diagnosis -rear axlo
Symptom
NOIse
"Clonk· Oil nccelera tlon nnd deceh:ontlun
,... Ilenka\Je
)
renr wheels . Under coasting or overrun conditions the differential will operate as a normal stnndard unit. The unit incorpora tes four different;nl pinions <IS <lgninst the two pinions lilled to standard units.
Roason(s)
Worn axleshaft bearing Insufficient luhricant
Worn dlfferentinl houSIng bearings Worn crown wheel and pinion Incorrect crown wheel nnd pinion mush
Worn 1I. leshalt splrnes Excessive crownwheel nluJ pinIon bncklnsh
Pm ion oil senl Icnkrng ReM cove r gasket leaklllg 011 seal on <lxlesh<lfl bearing leakIng
, , ,
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Chapter 9 Braking system
Fault rflnunosis -hrnking sys tem Foothrnk.c I)(!dnl -removal .1nd refluing From m ake caliper -overhau l .. Front blake cillipCf -removal ;1nd 'Cl,UUl\1 .... ______ ._ .................... . Front brake discs -inspection, ,enlov,,1 and rcl,!\in(J Front disc pilds -renewal , ....... _ ...... .. General description ..... .... ........ . ............ . H andb<ake - adjus tment ................ ................................... ___ __ ...... . Handbrake cable(s) and rod -removal and rcfiuing . Handbrakc lever -removal and refilling ........ ........... ..... ..... ......... . Hydraulic pipes and hoses -removal and refiUing . Hydraulic system -bleeding . . .............. .
Spcci/ic:ltions
Syste m type
I=rOl1t brakes ~c tt,ickncss :
Now ....................................... .
Min rmum.
Oisc fun ·out (ma~inlum including hub).
Mini'l1ulll disc pad lining Ihickness
Re ar brakes MInimum bfake shoe lining thickness.
Torque w re nch settings Caliper ....... ................. ................................... . Brake disc .................... . Backpl"te ........................... .................... .......... ................ .... .. .. .......... . Hydraulic unions. Bleed screw (ma~) .... Aecuf>Cfaling valve 'Clainel (Gi,ling)
Gonoral description
23
16
5 ,
G 3 1 18 20 19 14 15
Oisc brakes aro f;tted 10 Iho front wheels and drum brakes to the lea. wheels. Tho cable or cablo and rod opelilled handbrake oper:11es independently on the real wheels. A vacuum sorvo unit is fiued
" "tween the mastel cytinde. and loolbrake pedal to provide assistance 'en the pedal is depressed.
T he hy,aulic circui t is split frOnt and rear. Undel normal conditions
M,lSIC' cylinder -ove.hilul Milsle. cylinder -removill ilnd .e liuing . P.eSStue d,ffcrenliill swit c h -desoiplion .• e m ov,,1 and .el,ning P,essure ,educing valve · description. relllovill ilnd .er,llonu
Reil' i),lGkplilte · ,emov"r ilnu refining Hei!( i)r"ke shoes -renewal ....... .................. .............. . . Routine m"intenance ........ . ................. .
SlOp·lilmp switch - removal. re/rUlng and ildJustmcflI . Vilcuum servo unil _ description . Vncuum servo unil -rcrnovnl nod rcfiUing Wheel cylindcr -rcmovnl. ove.haul and ref'lIing
11 10 12 13 ,
7 2 17 21 22 8
Dlml hyd'i1ulic cif cuit. snlol Ironl i1nd rCilr WIth IlreSSU,e reducing v:llve in reil r ci.cui t on Iiller models. DISC I,onl brilkes i1nd self·ndjust illu rca .
(!rum brilkes. all wilh servo aSSIstance. Calrle or c.,blc .1nd rod operated handbrake on rear l)f"k es
12 .7 mm (0.5 in) 11.4 rnm (0.45 in) 009 nlln (0.0035 in) 3 .0 mm (0.118 in)
1.5 mm (0.059 in)
Nm 471068 41 1046 271031 71010 10 491062
Ibl It 351050 301034 20 to 23 5 to 7 7 36 to 46
both ci.cuilS operale in unison. howeve •. in the event of faIlure o f one circui t Ihe lemaining ci.cui l will p<ovide adequate bfaking 10 SlOp Ihe car in an emergency. late. models incorporate a pfessure reducing valve in Ihe r(la. hydraulic Cifcu il to prevent rca, wheel locking during heavy braking . When working on the bo"aking system. remembef Ihat blake fluid is loxic and will also damage painlwo.k. II spilt II should be washed away immediately with cold water.
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) Chapter 9 Braking system 145
/ll.Iid reservoir tille , cap \0 help roduce any fluid loss. 4 Where a rigi d brake line is connec ted \0 the calipe r, comple tely unscrOw the union nUl . Where Iho flex ible hose is connected directly \0 Ihe caliper. loosen only .he union (lnd unscrew Ihc caliper f.om Ihe
hose later. S Prise back the laus on the locking plale and unscrew Ihe mouming boilS (photo). The cJliper may now be wit hdrawn ove r th o disc and where neCessary unscrew ed from Ihc flex ible hose, 6 Refilling is a revCfsal of fernOv;!I, but lit a new locking plate and
l ighten the mouming bol ts \0 the specified torque. Bend the Inbs \0 Io<:k I he boils. On comple tion bleed the hydwulic system wit h
reference \ 0 Sec tion 15.
5 Front brake caliper -ovorlulU l
1 With the c~liper removed . cle~n away all external dlr1. 2 Where applicable, prise out the dust cover cirClips <Jou wleilse the
dust covers from the external ~onular groove. : lIr"ct the pistons: keeping them idenhlied side lor s.de. If nt .... "ss"ry. use low [lir P"CSSlU(! frOill a foot pump to lorc e the pistons
IrOIl' lho bores. 4 nove tho dust covers Irom the pistons or bores as apphc<Jblo. 5 Prise tho pisto n seillinU rings from tho hores tnkino Cilre not to scratch the bore suri<Jce. 6 It is impOrliln1 liw i tho twO h<Jlves olthe caliper are not separated under any circumstanr:es . If hydr.1ulic lIuid lenks ,l,e evident from tho join!. the ca liper must be ronewed complete. Thoroughly wash all p.1,t5 in methylated spi ri ts. or c lean hydraulic lIuid. DUling reassemhly. new rubbe .. seals must be lilted. These should bo weiliubricilted. wrth clean
hydrau lic Uuid . Inspect the piSlons and bores for signs 01 weilr . score markS. or damage and il evident. new par ts should be obtained !Cady for lilting. or a new ca lipe r obtained. 7 R eassem ble tho components using a reversal of th n disnwn tling procedure. but before inserting the pis tons dip them in clen n hydrnulic fluid to assist entry through the seals. On comple tion press the pistons fully into the bores.
45 Front brake caliper mounting bolts (arrowed)
6 Front brake discs -in spection. re rnovnl and refitting
Apply the hilndlxake then jn ck up the hom of the car and support on :1xle st:1flds. Remove the Iront roadwheels . 2 Rotate the disc by hand and examine il lor deep scoring, grooving or cf1lcks. light scoring is normal, but if excessive the disc must be
renewed.
3 SCrJpe <Jway any loose rus t fro m the oute r edge of the disc, lhen mensu.e the disc thickrless using a micrometer or cnlipe rs. If less lhan the minimum specified thiCkness rhe disc mUSI be renewed.
RUEO '.(RlW
--
1-""£0""""" ~Plf&#39;l ~-____ ttIP
BI&#34;&#39;~( &#34;.&#34;,~&#34;&#34; PI~I()&#39;
4IOUf llltlGOOLI tCCKltlG PLATE
R( 1 Altl{R RltlG
BRAKE (VLIHOER PISTO'l
(l001
Fig. 9.3 EKp loded view of the front brake calipe( on fater models (Sec 5)
RING
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