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6-224发动机机械系统-2.0升L34发动机6.1B发动机机械系统–2.0升(L34)6.1.1规格6.1.1.1紧固件紧固规格规格应用公制英制加速器踏板到隔板20N·m15lbft接头到气缸盖60N·m45lbft交流发电机托座到交流发电机35N·m26lbft交流发电机钩环销到交流发电机与进气歧管20N·m15lbft交流发电机支架到交流发电机与进气歧管20N·m15lbft交流发电机到气缸组35N·m26lbft手柄到弹簧支柱支架管65N·m48lbft辅助集料支架到发动机减震气缸体35N·m26lbft轴承凸缘到变速器25N·m18lbft软钢索托座与燃料供应管道到燃料导轨15N·m11lbft制动加力装置真空管道到进气歧管20N·m15lbft凸轮轴轴承盖到气缸盖8N·m6lbft凸轮轴位置检测器到气缸盖6N·m4.5lbft凸轮轴链轮到凸轮轴50N·m37lbft+60°+15°冷凝器到辅助元件主托座35N·m26lbft连杆轴承盖到连杆35N·m26lbft+45°-15°冷却剂管道到气缸组15N·m11lbft冷却液泵到气缸组25N·m18lbft冷却剂温度传感器到冷却剂凸缘10N·m7.5lbft曲轴轴承桥到气缸组20N·m15lbft曲轴轴承盖到气缸组50N·m37lbft+45°+15°曲轴位置检测器盘到曲轴13N·m9.5lbft曲轴位置检测器到气缸组6N·m4.5lbft气缸端盖到气缸盖8N·m6lbft气缸盖到气缸组25N·m18lbft+90°+90°+90°+15°差速器到气缸组与到曲轴轴承盖20N·m15lbft+45°DIS点火模块DPCM到适配器8N·m6lbft传动皮带张力辊到辅助元件主托座25N·m18lbft方向盘到曲轴60N·m45lbft发动机发动机机械系统-2.0升L346-2256.1.1.1紧固件紧固规格续规格应用公制英制DSI点火模块DPCM适配器到气缸盖20N·mM830N·mM1015/22lbft发动机托座到气缸组35N·m26lbft发动机减震气缸体固定螺母到前轴身45N·m33lbft发动机减震气缸体到发动机托座45N·m33lbft发动机减震气缸体到变速器托座45N·m33lbft发动机转运钩环销到气缸盖20N·m15lbft发动机通风口凸缘到气缸组25N·m18lbft排气歧管到气缸盖22N·m16lbft飞轮到曲轴65N·m48lbft+30°-15°带有新紧固螺栓的前轴身到底盘100N·m74lbft+40°+15°前发动机减震气缸体到发动机减震气缸体托座45N·m33lbft前排气管到排气歧管20N·m15lbft右前发动机减震气缸体托座到辅助集料支架35N·m26lbft前正时皮带罩到后带齿带盖6N·m4.5lbft燃料管道到燃料导轨15N·m11lbft燃料压力调节器固定卡钉5N·m3.5lbft燃料导轨到进气歧管8N·m6lbft燃料回流管到燃料压力调节器15N·m11lbft隔热屏到排气歧管8N·m6lbft点火电缆盖到气缸端盖3N·m2lbft进气歧管支架到进气歧管与气缸组25N·m18lbft进气歧管到气缸盖22N·m16lbft敲击传感器到气缸组20N·m15lbft下储油盘到上储油盘8N·m6lbft+30°挡油板到曲轴轴承桥20N·m15lbft挡油板到差速器8N·m6lbft机油量油计管固定键25N·m18lbft放油口栓塞到下储油盘10N·m7.5lbft机油过滤器到机油泵15N·m11lbft进油管到曲轴轴承桥20N·m15lbft进油管到机油泵8N·m6lbft进油管托座座到差速器20N·m15lbft6-226发动机机械系统-2.0升L34发动机6.1.1.1紧固件紧固规格续机油压力开关到机油泵40N·m30lbft机油泵盖到机油泵6N·m4.5lbft机油泵到气缸组6N·m4.5lbft前排气管内氧传感器55N·m41lbft动力转向泵到辅助集料支架25N·m18lbft压力管道到动力转向泵37.5N·m27.5lbft后发动机减震气缸体托座到变速器60N·m45lbft后发动机减震气缸体到发动机减震气缸体托座45N·m33lbft后发动机减震气缸体到前轴身20N·m15lbft后带齿带盖到机油泵与气缸盖6N·m4.5lbft冷冻剂管道到压缩机33N·m24lbft支承轮托座到气缸组25N·m18lbft安全阀的螺旋塞到机油泵30N·m22lbft变档引导器卡钉16N·m12lbft变档引导器到变档杆10N·m7.5lbft火花塞到气缸盖25N·m18lbft启动器螺栓到变速器60N·m45lbft转向中间轴到转向齿轮内22N·m16lbft+45°+15°恒温器壳体到气缸盖15N·m11lbft节流阀体到进气歧管9N·m6.5lbft正时皮带传动齿轮到曲轴130N·m96lbft+40°到50°正时皮带导轮到气缸组25N·m18lbft正时皮带支承轮到支承轮托座25N·m18lbft正时皮带张力辊到机油泵20N·m15lbft扭矩支架托座到接头60N·m45lbft扭矩支架托座到弹簧支柱圆盖60N·m45lbft扭矩支架到托座60N·m45lbft扭转震动倾翻器到正时传动齿轮20N·m15lbft变速器托座到变速器60N·m45lbft上储油盘到气缸组20N·m15lbft上储油盘到变速器20N·mM840N·mM1015/30lbft油罐通风口真空软管托座到进气歧管20N·m15lbft发动机发动机机械系统-2.0升L346-2276.1.1.2发动机规格一般规格规格应用公制英制发动机型号C20SEL直列式4气缸排量1.998L121.93cuinRPOL34孔径86mm3.3858in冲程86mm3.3858in压缩比9.6:1点火顺序1-3-4-2机油压力250kPa@idle36.3psi@idle曲轴尺寸种类∅主轴承轴颈尺寸1到5色码标准57.974–57.981mm2.2824–2.2827in白57.981–57.988mm2.2827–2.2830in绿57.988–57.995mm2.2830–2.2833in褐负公差尺寸0.2557.732–57.738mm2.2729–2.2731in绿/蓝57.738–57.745mm2.2731–2.2734in褐/蓝负公差尺寸0.5057.482–57.488mm2.2631–2.2633in绿/白57.488–57.495mm2.2633–2.2636in褐/白∅连杆轴承轴颈尺寸1to4标准48.970–48.988mm1.9279–1.9287in-负公差尺寸0.2548.720–48.738mm1.9181–1.9188in蓝负公差尺寸0.5048.470–48.488mm1.9083–1.9090in白3个阔主轴颈导向轴承尺寸标准25.950–26.002mm1.0217–1.0237in-负公差尺寸0.2026.150–26.202mm1.0295–1.0316in-负公差尺寸0.4026.350–26.402mm1.0374–1.0394in-曲轴轴承尺寸#124和5种类下曲轴轴承壳尺寸色码标识GM2985标准1.989–1.995mm0.0783–0.0785in褐655N1.995–2.001mm0.0785–0.0788in绿656N6-228发动机机械系统-2.0升L34发动机曲轴轴承尺寸#124和5续种类下曲轴轴承壳尺寸色码标识GM29852.001–2.007mm0.0788–0.0790in白126N负公差尺寸0.252.114–2.120mm0.0832–0.0835in褐/蓝657A2.120–2.126mm0.0835–0.0837in绿/蓝658A负公差尺寸0.502.239–2.245mm0.0881–0.0884in褐/白659B2.245–2.251mm0.0884–0.0886in绿/白660B上曲轴轴承壳尺寸标准1.989–1.995mm0.0783–0.0785in褐655N1.995–2.001mm0.0785–0.0788in绿656N2.001–2.007mm0.0788–0.0790in白126N负公差尺寸0.252.114–2.120mm0.0832–0.0835in褐/蓝657A2.120–2.126mm0.0835–0.0837in绿/蓝658A负公差尺寸0.502.239–2.245mm0.0881–0.0884in褐/白659B2.245–2.251mm0.0884–0.0886in绿/白660B可允许曲轴轴承间隙0.015–0.043mm0.0006–0.0017in曲轴轴承尺寸#3种类阔曲轴轴承导向轴承尺寸色码标识GM2985标准25.850–25.900mm1.0178–1.0197in褐/绿/白-负公差尺寸0.2526.050–26.100mm1.0256–1.0276in褐/蓝绿/蓝-负公差尺寸0.5026.250–26.300mm1.0334–1.0354in褐/白绿/白126N连杆轴承尺寸种类下连杆轴承壳尺寸色码标识GM2985标准1.490–1.500mm0.0587–0.0591in-623N负公差尺寸0.251.615–1.625mm0.0636–0.0640in蓝624A负公差尺寸0.501.740–1.750mm0.0685–0.0689in白625B上连杆轴承壳尺寸标准1.490–1.500mm0.0587–0.0591in-623N负公差尺寸0.251.615–1.625mm0.0636–0.0640in蓝624A负公差尺寸0.501.740–1.750mm0.0685–0.0689in白625B可允许连杆轴承游隙0.006–0.031mm0.0002–0.0012in发动机发动机机械系统-2.0升L346-229磨气缸尺寸活塞尺寸与气缸孔径规格尺寸气缸直径885.975–85.985mm3.3848–3.3852in普通尺寸指数9985.985–85.995mm3.3852–3.3856in0085.995–86.005mm3.3856–3.3860in0186.005–86.015mm3.3860–3.3864in0286.015–86.025mm3.3864–3.3868in加大尺寸指数7+0.586.465–86.475mm3.4041–3.4045in活塞尺寸885.955–85.965mm3.3840–3.3844in普通尺寸指数9985.965–85.975mm3.3844–3.3848in0085.975–85.985mm3.3848–3.3852in0185.985–85.995mm3.3852–3.3856in0285.995–86.005mm3.3856–3.3860in加大尺寸指数7+0.586.445–86.455mm3.4033–3.4037in气缸孔径规格允许失圆0.013mm0.0005in允许锥度0.013mm0.0005in活塞外突0.4mm0.0157in活塞间隙0.02–0.04mm0.0008–0.0016in活塞环规格尺寸角环第一压缩环高1.5mm0.0591in普通尺寸指数间隙0.30–0.50mm0.0118–0.0197in纵向游隙0.02–0.04mm0.0008–0.0016in锥环第二压缩环高1.5mm0.0591in普通尺寸指数间隙0.30–0.50mm0.0118–0.0197in纵向游隙0.02–0.04mm0.0008–0.0016in刮油环油环高3.0mm0.1181in间隙0.40–1.40mm0.0157–0.0551in纵向游隙0.01–0.03mm0.0004–0.0012in环间隙分布180°相对于中下环的间隙上/下刮油环间隙向左/右偏移25到50mm0.9842到1.9685in6-230发动机机械系统-2.0升L34发动机活塞销规格活塞销尺寸长61.5mm2.2413in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本文标题：别克君威发动机机械系统20升(L34)维修手册
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