brake fluid FORD CAPRI 1974 Workshop Manual

Chapter 6 Manual gearbox and automatic transmission 123
When towing a vehic le wIth automl11ic uansmission it is impoltllllt to observe the precautIons gIven til ,he 'Jading and Towing' se<:,ion at the Iront 01 the manual. Due to the complexity of the au'oma',c tran smission unit. If performance IS not up 10 s tandard, or overhaul is necessary, it IS impera tive that this be left to the locallllain agents who will have the special equipment for fault diagnosis and rectiflcallon. The content of the following sections is thereforc confined to supplying gener", Informl11ion 1'Ind any service information and ins t.uc tion tha i cnn be used by the owner.
19 Routine Illilinte,wno
At the i!lle.vnls SI)CClfiecllll Iho ROllllne Milintennnce seCIlOll in the I.onl 01 th e Illanllal cnllY Oul Ihe follOWIng p'ocp.dwe
Luuricow selector link'1[}() , Applv the h;rrldh.,lke th(:n J,lck \lp the front of Ihc Cill ,'lid Support
,n nxle Slnnds
2 Orlthe Irnkn!JCs at cndl end 01 Ihe genrsh ,h rml on the Icfl·hnnd "le 01 Ihe Iransnll~s,on lowel the cnr \0 Iho wound,
Check /mn.Wllissioll fluid level 4 Elrlll!! the engIne and trnnsnllSSlon to nOllllal ope.IlIUl!IIp.llIperillllfe
and I)alk tho vehlchl on le vel grOllnd 5 Wi,h Ihe engIne idllll(l. move tht: 1.,lnsnllSj"on St:leclt>r lev!]r through ill! pOSlllons 1!lIee lImes. Ihen onuaue '1" ,11111 wall for ;rt lea~t one minute. 6 With ,he engine 51111 idling, wllhd.ilW Ihe lr.1nSnllSSIOll d,psllck.
Wipe it dean, reinsert II, wilhd •• 1W 11 for Ihe second !line nnd read off the levol. 7 Two tv pes 01 automatic transnllssion fluid a.e nvarlilblc (sec SpccifiCiltions 10' tv,>c numbe.s) .1nd It is ImpO,I,ln , Ihilt IheV 'lIe nOI mixed. The colour 01 the dipstick. 10' flUId level checklllg denotes which fluid tvpe to use , 8 If a tlr1nsnllssion requlII"U 1,1ter tvpe fluid IS I'lled 10 " to' COllsult your I'ord dealer rI thIS cond,t ron arIS"~ 9 If III)r.CS~.1rv IOp·up with til'.! spec.rlled orl, thr ough tire drpSlrck tube. 10 tire MAX m, uk, The '1" Adjust Iront brake /)(In(/ '" ApplV Iho handb."ko tholl lack 1'1) th'.! ',ollt 01 the ca. and sUPPO.I axlo stands 11 D,sconnoC t the downshIft ca!)le at Iho t'.1nsmISSlon 12 Slacken Iho brnke band adJusto, sClew locknut and unSClew the
adjus'or screw n lew h,fIlS . 13 Tlghlolllhe adJuslo, sOcw to 14 Nm (10 Ihl II) IISIilU a SUItable lo,que wrcnch From Ih,s poSlllon slaCken the adJusle r screw bv exact Iv I'll \Urns (pre·1983 models) or 2 Iwns ( 1983 and late,
model), Ihen tighten Ihe locknut Wllhoul diSlUrblllg Ihe pOsition of Ihe adjuster sc,ow .
14 R econnec t the downshift cable and lowe' Ihe car 10 Ihe ground.
20 Automalic transmission -removal (HId refining
If l)Osslble, ,aise the car on a hOlsl o. place it over an inspectIon pit. Alternatively, it WIll ho necessary 10 Jack up Ihe car to obtain the Illaximum possible amount of wOlking room undernealh. 2 Place a large d.ain pan benealh the transmiss.on sump (011 pan)
Ihen. working horll the ,car, loosen the a!laching boilS and allow ,he lIuld to drain. nemove all thO bohs excep t tho two I.onl ones to draIn as mIlch fluid as pOSSIble, th on temporarilV .efit Iwo bolls at th e re,1I 10 hold it in place . 3 Remove tho Slilrte. moto. as desc.ibed in Chapter 12 . • jWhero apphcable, rernove the access cover Dnd ad3pto, plale bolts,
Ie the engine untrl the to.qu e converter drain plug is visible, then
unsc.ew Iho plug and d.ain Iho Ihud Into a suit3ble con winer. Refl! and l'Uh ten Iho plug.
Fig. 6 .25 Checkill{J tho au tomatic transmission lIuid lovel (Soc 19)
Fig. 6.2 6 FrQ,1 bn'ko band adjustment (Sec 19)
A Arllf/SICI sc/t'w a Locknut
C Downslu/t Icvel D Downs/u/t c.lblc
Fig. 6.27 Torquo convorter to driveplato boll -arrowod (Sec 20)
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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 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 procarmanuals.com

) Chapter 9 Braking syste m 143
2
Fig. 9.1 DU

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 L ubrietl!£! /wndbh7ke linkage 15 Jilck up Ihe .eolf of Ihe Colf illid SIIIIPOII on ilxle Slilnds . 16 Oltthe prim,uy eil!>le connOChon to the boltom of Ihe halldh';,~" level. 17 011 1974/1975 models. u,ease Ihe pflmolfy callie whe,e II p;,sses over Ihe pulley wheel. ,111(1 0,1 Ihe pull ey ilnd lever pivot pO"'IS . 18 On lillCr models grease Ihe 1,i1nw c.se rod SUI)I)Olt hC;lfinU 19 011 the clcv is IIUIS i1I the w", l>olckpl" ,es. 20 lower thc cm !O the gr ound
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
I .
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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 hOld the m;"n ,clalfl,ng pins in plilce (photo) 5 RemOYfl Ihe m"in le tainm g pin~ which ,un through Iho c.lliper and the mel,, 1 h.,r. krnn of th o pads and Ihe ShUllS. 6 The flll ;t, o n l),le1S cil n now bo removed from the cahper. If they prnv!! \III1ICIIII to ,emove by Iland . II pair of long·nosed pi ie,s can be lIscd Lill :Iway the shims and tens.on sPflnus (whe,e lilted) (phoIOS). 7 Ca.eh,liy clcall Ihe .ecesses in the cahl>Of in which Ihe h,ction pads :md ShUllS he. and Ihe exposed faces 01 caCh pis ton. rem oving allu3ces 01 d"t 0' rllst 8 Us",u a p,nte 01 wood. e.l,eh,lIy rUlI,1et Ihe pis tons. n 1'1,11;\1 IhH t",'~e p"d tens,on SI""'U" Oil Ihe hr~ke 1)o1ds i1fl '''~'''''''" ;,S n,~:"sS,l'y
<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 .4 A pad .et .>.6C Disc pad and shim 3.9A T he shim allow must lace tho forwa,d rotation o f Ihe f.ont wheel
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3 .9B Fitting the tenS ion springs
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灲潣慲浡湵慬献捯m

) 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 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 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 RUEO '.(RlW
--
1-""£0""""" ~Plf'l ~-____ ttIP
BI"'~( ".",~"" PI~I()'
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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Chapter 9 Braking system 147
Br;'lke IlIlInU
Wheel Adjustment
"m
cylinder --·-·_.L
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• shoe hold down spring/pin
Br.lke shoe
Fig. 9
.5 Rear brake shoe components on later m odels (Sec 7)
All models 11 Check the wheel cylinder lor leaks and lor Ioee moyemen t of the
piston(s). Apply a hule brake urease to Ihe shoe contac t points on the
backpla te. wheel cylinde r, anchOr and sell-adjusting mechanism. On
early models check th 12 Fit the new brilke shoes using a reyers .. 1 01 the remoyal procedure,
but check that the self-.. djusting mechanism is set to the minimum
posi tion belore refilling the drum .
13 Finilily apply lhe loo tbrake firmly several times. On later models this will actua1e the self-adjus ting mechanism; however. on e '
Wheel cylinder _ remo yal. oyerhaul and re fitting
Remove lhe rear urake shoes as described in Section 7.
2 Fit a hose clalllp to the fle~ible hose leading to the reaf br .. kes. If a hose ci 4 On pre Oecembe r 1974 models remoye the split pin and clevis pin Irom the handb rake leyer the spr ing plate is inser ted from the piston end 01 the wheel cylinder.
5 On I.ller models unbolt the wheel cylinde r from the backplate .
6 To dismantle thO wheel cylinder, remoye the clip where fitted then
prise the rubber boo t(s) from the cylinder body.
7 Extr.lct the piston( s) 8 Remoye the piston return spring .
9 Prise the seal(s) from the piston(s) , 10 Clean all thO compo nents in methylated spirits or clean hydraulic fluid then inspec t them for wea r and damage. Check the cylinder bote and piston{s) 10f scoring and corrosion. and il eviden t renew the
complete w heol cylinder. If the components are in good condition
ob tain a repair kit 01 seals.
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1 Chapter 9 Braki ng system 1 49
,1 M aste r cylinder -overhaul
With tho m Girling type 2 Removo the SCleW$ and withdraw rhe fluid reservoir. twisting i as necesS,,'y from Ihe end seal. 3 Remove the twO seals afler cdraC ling the circlip ovor Ihe cnd seal. <1 Using II hOKagon key. unscrew Ihe relainer and hit oUllhe primary
recuperating valvo. Oepress Ihe primll'y piston during Ihis procedure. 5 Exl.;'!ct Ihe primary and secondary pistons. IOgether wi,h their associated components. noting Ihe order of lemOlln l. H nccessary top Ihe master cylinder on a block of wood or use air pressure from il foot pUIllP through the inlel porlS. G Separate rhe primmy ,10d secondary l)is10 11S irani lha intermediilte
sprinu . Uso tho !inUe.s 10 remove tile Ulilnd seDI from the primil'Y
r""' lon .
The secondil'y piSlon assembly should ho sOfh"ated by lilting the u"mblo leaf ove , Ihe shouldered cnd 01 tho viston . Using the lingo,s.
rr 'wo the se spnJlg
9 Dotach lhe villve space ,. tilking c Teves (ATE) type 10 Dopress Ihe primary piston, thon oxtrnCtlhe circlip from the mOUlh of th o c ylindo r and also unscrew Ille SlOp screw. 11 Extract the primary piston componen ts noting Ihe order 0 1 removal. followed by Ihe secondary piston componenlS. If necessary top the
master cylinder on a block of wood or use air pressure from a 1001 pump through tho inlet ports. 12 Prise the seals from the pistons, nOling which way round they are lilled. then il necessary remove tho springs and seals. The prima ry
pis ton spring is retained by a screw.
Both types 13 Clean all tho components in melhylated spirits or brake fluid then
inspec t them for wear and damage. Check the cylinder bore and pistons for scorinu and corrosion. and if eviden t renew the complete nI .opair kit of seals. 14 Di p Ihe piston and seills in hydrilulic Iluid then reassemble Ihe m convex side against Ihe shoulder nange. Belore refiuing the fluid reservoi r on lhe Girling type ch ock that the recupera ling valve is open wllh Ihe prim depressed.
1
2~
3~
13
1
2
3
4 5 6
7 8
R
22
21
Fig. 9
.8 Exploded view 01 the Girlin g master cylinder (Sec 11)
Filler cap 9 Seal 16 Secondary piston
Seal 10 MaSler cylinder body 17 Seal
Seal !Clainer
11 WiJslrer 18 Rell11i1er
Fluid reservoi r 12 Reservoir relaining screw 19 Spring
Seal
1 3 Seal 20 Spring fl/Miner
Relainer
14 Primary piSlon 21 Valve
Primary fCCllpCfaling valve
15 Spring 22 Seal
Circlip
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)
Chapter 9 Braking system
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: ~~ 11111JIII/IIIJ II /I /III Ii hIIllllIlIlIllllIlll 11111#111111 III! -------
8
9
Fig. 9.11 Exploded view o f Iho pressure d ifferenti I Fron( /)',l/a.' inlet ullioll 2 W ,)Silms 3 Pj~(UflS
J Pressure reducing vulve -description. remalln' nnd refitting
<1 SCi/Is 5 W,If/ll//y $wl(ch (j [lid ilIIIY
All models from ~pproxirniltely 1978 me lilted with il pressure ,educing valve in the rC~f hydraulic Cifelli!. The IInlve is IOCillCd on the lower Icft- hJrHJ side of the engine compn((mcnt (phOIO) ,mel 11 effectively limIts the hrakin\1 force DV 4 Unscrew the twO union nuts then disconnect ~nd pluU the pipes .
5 Unscrew the mounting bolts ,md remove the unit.
6 Refitting is a reversal of removal, but on completion bleed the
hydraulic system as descrihed in Section 15.
1 4
Hydraulic pipes and hoses -removal and refittin g
7 8.1/1 8 Body 9 R(lb/w( cover
First wke meilsures to reduce the loss 01 hydraulic fluid. If ~ rig id
pipe downstream of a fle~ible hose is being removed fit ~ hose clamp to
the hose . If this is not possible tighten a piece 01 polythene sheetinu
beneath th e livid reservoi r filler cap. 13
.1
Rear brake pressure reducing valve
2 To femove a figid pipe, unscrew the union nutS;]1 each cnd and release the pipe from the retaining ctrps. wh(Jre /riled.
be retained as a gUide.
151
)TO remove 11 fle~ible hose, lirst disconnec t the rigid pipes IN u"screwing the union nuts then unscrew the nuts securing the hose to
the 1l10unting brackets .
4 RiUid brake pipes arc normally made up from straight pipe using special bending <.rnd flare· forming lools. The old pipe should therefore 5
Refitt ing
is J revNsal o f removal, but make sure thJtlle~ible hoses
arc positioned clear of suspension or steering cOlilpo rwnts which
could chafe them. Finally bleed the hydrauhc system as deSCribed in Section 15.
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152 Chapter 9 Braking system
)
OIOIN -.1
(2 ~i MMI __ J-j -I , h= .. OJ"N , r-t1 8 7MH)
Fig. 9 .12 Modified screVlldrivcr f o r CC01t;llisillg {he IHcss urc different;", switch pisto n (SIlC 15 )
15 Hydraulic systerll -hfccdiliU
The correct functioning 01 the bfl,kc hyd,~ulo<.: sy Stem IS only possible aile! removal of all ai, from the components ilnd CIICUI1. Ihis is ilchieved by bleeding the system. Note \h 8 II possible, one 01 the DIY brake bleedIng k'ls avaIlable frorn ncccssory shops shoul d be used, paltlcul1\lly tho typo which p,essulisos the system. as they \)rea tly simphly the task and leduce the risk 01 expelled air and lIuid being drawn back rlI10 the systelli. Whell.! ono of these kilS is being used, follow Ihe milnlliacturer's instructions concerning its operiltion. 9 If a brake bleedmg ki t is nOI being used, the sys!Cm may be blcd in the COllVCntlOllill Wily ilS lollows: 10 Ohlain a cleill1 glass Iilr. a suililble lel1glh 01 pillstic or rubbe. tubin g willch IS a 1Ight fll over the bleed sc rews. a tIn of the speciflod hrake lIuld ~nd the help of an ilssis tant. 11 Depress the b.ake pedal seve' ,; , .'
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15 12 Ruhhe. (i'lsi C,lP 011 Ironi brake Cilllper
tht!
J;II ill111 porn 111 sull,c.(,:nt hrilkc lIuld 10 keep Ihe end 0 1 Ihe tube ,"uhml!r!Jed . Opel1the IJIL'Cd screw hall a ilIOn anti hnve your ilSSlstilnt dnp,nss IIII! IHilk e pedal In the flOOr and then relColse il. Tlghton Ihe billed ~r.rew ill Ihe end 0 1 cilch downstoko to prevent Ihe e_I)OJled 1 5 D,'press the hlake pcllal sevel,,1 I""es, It should feci 111111 sy~IC'"
16 Foolbrake pod,,1 -removal and .elillinll
Wo.kll1g InSide Ihe CM, ,emove the lower In c. a I","el below the 511,."," Ill!! C()IUIllIl 2 F.xlrilct the chI' ilnd pull out the clOVIS pIn "t1achlng thc servo pushrO Th o bushes may be renewed separately if neCeSSilry by driving thel11 hom the pcdaL G Rehlllng.s a reve,sal 01 ,emoval. but lubrIcate Ihe bushes, sh 17 Stop lamp switch _ removal, refilling aile! il(ljuslmenl
WOlking inSldc the car. remove the lower I"cia p"nel bolOw the slcCllng cOl ullin. 2 D,sconnoct the wiling plug, unscrew the locking nut and detach the swiech (photo).
3 Refilling is il revers procarmanuals.com