BMW 3 E21 316 318i 320 323i owners manual page 33

text version of content this owner's manual page from owners manual to the vehicle BMW 3 E21, year of production 1975 - 1983:

,)'+ hU/lrlIJlg-lnrUles Running-in- buthow? The greeneconometerzone on the rev BMW323i countershowsyou whenthe engineis Since the handbrakeuses an entirely operatingin its mostfuel efficientspeed separatesystemof drumsat the rear range.See 'DRIVINGHINTS'. wheels,it mustalso be run in. The cut-outrange ofthe speed limiting Itis goodpractice- assumingthatfavora- rotorarmstartsat thenarrowred warning ble road, weatherand trafficconditions • zone and mustnot be reachedeven on can be found- to applythe handbrake longdownhillstretchesor in the lower lightlyat app. 40 km/h(25 mile/h)until gears. someresistanceis felt. Engine speedsin the widered warning Thenpullthe leverup to the nextnotch zoneare detrimentalto theservicelifeof and driveon for app. 400 m (400ydsl. the powerunitand shouldbe avoidedat Releasethe handbrakefully.Thisproce- all costs. 'durewillhelpto achievefullhandbrake Rememberthattherunning-inrulesapply operatingefficiency. to othermechanicalassembliessuchas I YourBMWServiceStationwillrun in the thegearboxorrearaxle, and notjusttothe handbrakeduringthepre-deliveryinspec- engine. tionorasafetytest,butyoucan repeatthe The engineof yourBMW has not been Shouldanysuchassemblybe replacedat process(exercisingthenecessarycare)at artificiallygovernedin any way.Sincefull a laterstagein thecar'slife, the running- approx.3-monthlyintervalsor whenever poweroutputis alwaysavailable,it is up in proceduremustbe repeated. the handbrakeappearsto be losingeffi- toyoutoobservethefollowingrunning-in Running-inthebrakes: ciency. rules,and thusachievemaximumopera- In orderto permitnew brakepadsand Running-inprocedurefortires: tinglife, economyand reliability. to bed downand achieveuniform, The productionmethodsusedin the tire linings the first2000km (1200miles) optimumfrictionvalues.avoidall repea- industryresultin brand-newtireshaving During driveatchangingengineandroadspeeds, ted heavybrake applicationsuntilapp. less thantheirdesignedadhesionat the notfasterthantwothirdsofthe 500km (300miles)havebeencovered, roadsurface.Untilfullgripis available,and however, fromhigh speeds,and severe as a meansof obtaininga good wear topspeedadmissiblein eachgear.Atany especially rateavoidfullthrottleoruse ofkick-down loadson thebrakes, as whendescending pattern,you are recommendedto drive settingoftheaccelerator. mountainpasses. Do not subjectthe withrestraintforthe first300km (app. Drivingatverylowenginespeedsin ahigh brakesto any formof prolongedtesting 200miles). gear is at leastas harmfulas exceeding duringtherunning-inperiod. the permissibleenginespeeds.When Brakepads,linings,discsand drumsmust acceleratingor on uphillgradientstry to coverthisinitialdistanceundertheopera- keepenginespeedabove1500/min.and tingconditionsdescribedbeforetheyare changedownin goodtime.particularlyon fullyrun in and then capableof achieving gradients. a favorablewearand contactpattern. • uphill

owners manual BMW 3 E21

owners manual BMW 3 E21 - year of production: 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983 - BMW 3 E21 316 318i 320 323i owners manual EN