帕萨特B5维修手册

帕萨特B5维修手册 第3节 气缸盖及配气机构的维修 1、 气缸盖 气缸盖的结构如图2-49所示。进行气缸盖修理时，必须更换相关的密封件、衬垫、自锁螺母及有规定拧紧力矩的螺栓。安装带有凸轮轴的缸盖时，必须用机油润滑挺杆与凸轮的接触面。气缸塑料保护套必须在安装气门前才可拆掉。安装新缸盖或气缸盖衬垫时，必须放空旧冷却液，然后加注新冷却液。 图2-49 气缸盖零件分解图 1-气缸盖罩 2-螺母(10N?m) 3-气缸盖罩衬垫 4-挡油罩 5-气缸盖 6-进气歧管密封垫 7-螺栓(25N?m) 8-进气歧管 9-气缸盖衬垫 10-排气歧管密封垫 11-气缸盖螺栓 12-排气歧管 13-螺母(25N?m) 气门座之间或气门座镶圈与火花塞螺纹之间有裂纹的气缸盖，若裂纹最宽不超过3mm或火花塞头部螺纹开裂不超过4圈，则仍可使用，不会影响使用寿命。 1.1进气歧管的拆装 to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides (1)进气歧管的拆卸。拆卸前应查询车载收音机密码，关闭点火开关，断开蓄电池接地线，排空冷却液。拆卸进气歧管时，应断开或割开所有电缆及拉索，安装时必须按原样复位。进气歧管和拆卸如下: ?拆卸冷却液膨胀箱及软管。 ?拆开节气门控制单元处及支架的节气门拉索(不拆卸节气门拉索夹持器)，拆开节气门控制单元处的空气软管5，断开通向活性炭罐的真空管1，拉出通向制动助力器的真空管，如图2-50所示。 2 ?拆下进气温度传感器及气节气门控制单元插头，再从霍尔传感受器上拉出插头(如图2-51所示)。 ?拆下燃油歧管紧固螺栓，将真空管拉离燃油压力调节器(如图2-52所示)。将带喷油器的燃油歧管从进气歧管上拆下，并置于发动机舱后面的干净布上。 ?从上部冷却液管上拆下冷却液软管，从气缸盖后侧的进气歧管及冷却液管法兰拆下下部冷却液管紧固螺栓(如图2-53所示)。 图2-50 拆卸节气门控制单元相关组件 1、2-真空管 3-进气温度传感器(G42) 4-节气门控制单元(138)插头 5-空气软管 图2-51 拔下进气温度传感器的插头 left, "Huang Chi", originally Yue water hides e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town hasis th y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town2 图2-52 拆卸真空管 ?拆开进气歧管处的曲轴箱通风软管1，拆卸进气歧管支架(如图2-49箭头所示)，拔出机油标尺，拧开法兰处进气歧管紧固螺栓，折下进气歧管。用干净布堵住气缸盖上的进气口。 图2-53 拆卸冷却液管 图2-54 拆卸进气管支架 1-曲轴箱通风软管 culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hidespeople with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine many n bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and leftcopper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Ta is theved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, sahem. of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred t Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tombsank psters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpseon situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tito West rear, to County Shen Liqun report guerrillas breakout Hou of acti3 (2)进气歧管的安装。更换衬垫及密封件，按与拆卸相反顺序安装进气歧管。安装时要注意调整节气门拉索和加注冷却液，安装后应注意还要进行以下操作: ?连接蓄电池后，输入收音机防盗密码， ?用电动开关完全关闭前门电动门窗。沿关闭方向操作所有电动门窗开关(至少1s)，启动单触功能。 ?调整时钟。 进行节气门控制部件的匹配(参见发动机电控燃油喷射自诊断的有关)。 ? ?查询及删除故障存储。 1.2气缸盖罩的拆装 (1)气缸盖罩的拆卸步骤: ?拆卸发动机舱盖。 ?拧开隔热罩及气缸盖罩处的曲轴箱通风管紧固螺栓，将曲轴箱通风管轻轻移向一侧。 ?拆卸正时带上护罩。 ?拔下点火线圈插头，断开接地线，拧下点火线圈紧固螺栓。 ?拧下气缸盖罩螺母，拆下气缸盖罩。 (2)气缸盖罩的安装按与拆卸相反的顺序进行。安装时应特别注意:如果气缸盖衬垫损坏，应更换。 1.3气缸盖的检修 (1)气缸盖的拆卸步骤: ?查取车载收音机密码。关闭点火开关，断开蓄电池接地线。排空冷却液。 拆卸时要注意燃油系统是有压力的,拆下后封 ?拔下燃油分配管上的输油管和回油管, 闭管路,以免污染燃油系统。拆卸进气歧管的排气歧管(三元催化器)。 ?按顺序拆下活性炭罐电磁阀、点火功率终端级及空气质量计的插头。 ?拔出软管的接头，拆下空气滤清器壳体。拔下点火线圈上的插头，拔下冷却液温度传感器上的插头。从缸盖上打开所有线路的卡箍，将电线置于一边。 ?拔出通向气缸盖后侧热交换器的冷却液软管(须先松开连接法兰上的保持器)。拆卸正时带上护罩。通过曲轴正时带轮上的中心螺栓，沿发动机旋转方向盘动曲轴，将曲轴调至一缸上止点位置。 ?用T45扳手松开正时齿带张紧装置，向下压正时带张紧装置，从凸轮轴正时带轮上拆下正时带，拧开Torx螺栓，向前摆动张紧板。 ?拆卸气缸盖罩。 ?按图2-55所示的顺序拧下气缸盖螺栓，拆下气缸盖。 图2-55 拧下气缸盖螺栓 (2)气缸盖的检查 如图2-56所示，用带刃口的直尺或厚薄规测量气缸盖若干点，最大允许变形为0.1mm。 e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town hasis th y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter townleft, "Huang Chi", originally Yue water hides 4 图2-56 气缸盖的检查 如图2-57所示，气缸盖修整(刮削)尺寸不得超过最小尺寸a，最小尺寸a=139.25mm。 图2-57 气缸盖的修整 (3)气缸盖的安装步骤 安装气缸盖时，必须更换缸盖螺栓、密封件、衬垫、自锁螺母及有规定拧紧力矩的螺栓。若经过修理，须仔细清除掉残留在缸体及缸盖上的衬垫，确保面无划痕或擦伤。仔细清除掉残余研磨、金属粒屑和布片，气缸垫必须小心轻放。气缸体上的缸盖螺栓盲孔内不得有残留机油或冷却液。 ?安装气缸盖前，必须将曲轴和凸轮轴转到1缸上止点位置。将气缸垫安放就位，注意缸体定位销位置(如图2-58所箭头所示)，进气侧须可看见备件号。 图2-58 气缸体定位销 ?将气缸盖安放就位，插入气缸盖螺栓，用手拧紧。按如图2-59的顺序，分两步拧紧气缸盖螺栓，第1次为60N?m;第2次用刚性扳手再拧1/2圈(允许分两次拧1/2圈)。 ?安装正时带(调整配气正时)。安装气缸盖罩、多楔带及张紧装置。 ?调整节气门拉索，将新鲜冷却液加入冷却系统。连接蓄电池后，输入收音机防盗密码。用电动开关完全关闭前门电动门窗，沿关闭方向，操作所有电动门窗开关(至少1s)，启动单触功能。调整时钟，进行节气门控制单元的匹配，查询及清除故障存储器内的故障码。 culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hidespeople with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine many n bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and leftcopper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Ta is theved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, sahem. of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred t Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tombsank psters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpseon situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tito West rear, to County Shen Liqun report guerrillas breakout Hou of acti5 图2-59 缸盖螺栓拧紧顺序 1.4 检查气缸压力 检查气缸压力时发动机机油温度不得低于30?。气缸压力的检查步骤如下: (1)关闭点火开关，从点火线圈上拔下插头。拧下点火线圈紧固螺栓。从所有喷油器上拔下插头。用火花塞扳手3122B拆下火花塞。使节气门全开，用气缸压力测试仪V.A.G1381/V.A.G1763检测压缩压力。 (2)起动起动机，直至测试仪上显示的压力值不再升高。气缸压缩压力如表2-9所示。 (3)装复点火线圈、火花塞。 表2-9 气缸压缩压力 (kPa) 新发动机 磨损极限 各缸压力允许偏差 750 900,1400 最大300 2、 配气机构的维修 配气机构的结构如图2-60所示。气门不可修整，仅能研磨，其结构尺寸如图2-61和表2-10所示。 left, "Huang Chi", originally Yue water hides e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town hasis th y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town6 图2-60 配气机构零件分解图 1-螺栓(65N?m) 2-凸轮轴正时皮带轮 3、24-油封 4-气缸盖 5-气门导管 6-气门杆油封 7-气门弹簧 8-气门弹簧座 9-气门锁块 10-液压挺杆 11-进气凸轮轴 12-进气凸轮轴轴承盖 13-双列轴承盖 14-排气凸轮轴 15-排气凸轮轴轴承盖 16、17、20-螺栓(10N?m) 18-传动链 19-金属/橡胶衬垫 21-密封堵塞 22-排气门(内注钠) 23-进气门 25-霍尔传感器转子 26-垫圈 27-螺栓(25N?m) 28-霍尔传感器(G40) 29-螺栓(10N?m) 图2-61 气门的尺寸图 表2-10 气门尺寸 尺寸 进气门 排气门 Φa(mm) 26.80,27.00 29.80,30.00 many n bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and leftcopper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Ta is theved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, sahem. of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred t Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tombsank psters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpseon situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tito West rear, to County Shen Liqun report guerrillas breakout Hou of acticulture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hidespeople with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine 7 Φb(mm) 5.95,5.97 5.94,5.95 C(mm) 104.84,105.34 103.64,104.14 45 45 α(?) 维修配气机构后，应慢慢将曲轴转动,圈，保证起动发动机时不接触活塞。安装新液压挺杆后，30min后方可起动发动机，气门补偿元件就位，否则气门将碰触活塞。 磨损的注钠排气门按下述方法处理后才能报废:用金属锯将磨损的气门在阀头和杆头中间的某一点锯开。锯断后，两部分切勿与水接触，然后将气门投入一水桶内，浸泡10min以上，人员必须远离水桶，以免钠燃烧时伤人。 2.1凸轮轴轴向间隙的检查 测量时，先拆掉液压挺杆、链轮端的轴承盖、凸轮轴带轮端的双列轴承盖，用千分表支架VW387将千分表安装在缸盖上，如图2-62所示。进、排气凸轮轴的轴向间隙最大值为0.20mm。 图2-62 检查凸轮轴轴向间隙 2.2液压挺杆的检查与更换 发动机起动时，不规则气门噪音属正常现象。 起动发动机，运转至冷却液大约80?。将转速提高至的2500r,min，运转2min(如需要，进行道路试验)。 若不规则气门噪音消失后，短期内再次出现则须更换机油安全阀，安全阀位于机油滤清器支座内。若液压挺杆仍有噪音，则检查是否有损坏的挺杆。 (1)液压挺杆的检查。拆卸气缸盖罩、用曲轴正时带轮的中心紧固螺栓顺时针转动曲轴，直至待查挺杆的凸轮朝上，测定凸轮与挺杆的间隙。 如图2-63所示，用一楔形木棒或塑料棒压下挺杆，若凸轮与挺杆间可插入0.20mm的厚薄规，则须更换挺杆。 图2-63 检查凸轮与挺杆间的间隙 (2)液压挺杆的拆卸步骤: ?拆下多楔带及张紧装置、再拆下正时带上护罩。 ?沿曲轴旋转方向通过曲轴带轮中心螺栓将曲轴盘至1缸上止点标记处。拆卸气缸盖罩，松开张紧装置，从凸轮轴带轮上拆下正时带。 ?用专用工具3036松开凸轮轴链轮，拉出凸轮轴链轮。拆卸霍尔传感器壳体，从霍尔 is th y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter townleft, "Huang Chi", originally Yue water hides e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has8 传感器上拆下转子。用传动链张紧器3366的定位器固定住液压传动链张紧装置，如图l-64所示。注意定位器不要拧得过紧，否则可能损坏液压传动链张紧装置。 图2-64 固定液压传动链张紧装置 ?清洗面对轴承盖链条及凸轮轴链轮，并用彩色标出安装位置，如图2-65所示。注意不可用中心冲头在链条上打标记或切口。两箭头的距离(即彩色标记间的距离)为16个链辊(从豁口旁的进气凸轮轴链轮的链辊开始计)。 图2-65 链条及凸轮轴的安装位置 ?首先拆卸进、排气凸轮轴的第3和第5道轴承盖(如图2-66所示)，再拆卸双列轴承盖。然后拆卸相邻进、排气凸轮轴链轮的两个轴承盖，拧下液压传动链张紧装置紧固螺栓。分几步按对角线方向拆下进排气凸轮轴的第2和4道轴承盖紧固螺栓，然后拆下轴承盖。 图2-66 拆卸轴承盖 ?拆下进、排气凸轮轴及传动链张紧装置，取出液压挺杆。 (3)液压挺杆的安装步骤: ?按彩色标记将链条装到两凸轮轴上，两箭头间的距离(即彩色标记间的距离)为16个链辊。 ?更换传动链张紧装置的橡胶和金属衬垫，并在阴影区域涂上一层薄薄的D454 30002密封剂，如图2-67所示。 culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hidespeople with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine many n bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and leftcopper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Ta is theved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, sahem. of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred t Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tombsank psters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpseon situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tito West rear, to County Shen Liqun report guerrillas breakout Hou of acti9 图2-67 更换传动链张紧装置橡胶和金属衬垫 ?将传动链张紧装置插入链条，用机油润滑两凸轮轴的工作面，将凸轮轴连带链条及张紧装置一起装到缸盖上，拧紧张紧装置的连接件(注意定位套筒的位置)。分几步按对角线方向拧紧进、排气凸轮轴的第2和4道轴承盖(注意定位套筒的位置)。安装相邻进、排气凸轮轴链轮的两个轴承盖。 ?检查凸轮轴位置是否正确，然后拧紧轴承盖(注意定位套筒位置)。拆卸链条张紧器3366的定位器。在双列轴承盖阴影区域涂上一层薄薄的D454 300 02密封剂(如图 1-68所示)，然后装上轴承盖(注意定位套筒位置)。安装剩余轴承盖(注意定位套筒的位置)，安装新的进排气凸轮轴油封，安装凸轮轴正时带轮。检查安装位置，凸轮轴正时带轮的窄幅板朝外(如图2-69箭头所示)，须可见1缸上止点标记。安装凸轮轴正时带轮紧固螺栓(用定位器3036固定)。 图2-68 双列轴承 图2-69 检查凸轮轴正时带轮 ?将霍尔传感器转子的凸起卡入进气凸轮轴的豁口，装上垫圈(锥面朝外)，安装霍尔传感器壳体。安装气缸盖罩，将凸轮轴皮带轮上的标记对准气缸盖上的标记，将扭转减振器上的标记对准正时带护罩的标记。转动凸轮轴时曲轴不得处于上止点，否则气门可能碰撞活塞，导致损坏。 2.3气门杆油封的更换(已安装气缸盖时) (1)气门杆油封的拆卸步骤: ?拆卸凸轮轴和液压挺杆，并将其面朝下存放，操作时须注意挺杆不可互换。用火花塞扳手3122B拆卸火花塞，将相应气缸的活塞调至上止点，将压力软管VW653,3拧入火花塞螺纹孔内。 ?用螺栓将弹簧压缩工具3362装到缸盖上，如图2-70所示。将相关气门调至正确位置，再将压力软管连接到空压机上(空气压力至少600kPa)。用螺纹芯棒及止推件向下压气门弹簧，拆下弹簧。 ?可轻敲气门弹簧座拆下气门锁块。用工具3364拉出气门杆油封，如图2-71所示。 left, "Huang Chi", originally Yue water hides e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town hasis th y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town10 图2-70 拆卸气门弹簧 图2-71 拆卸气门杆油封 (2)气门杆油封的安装。将塑料套(图2-72中A)装到气门杆上，以防损坏新的气门杆油封。在油封唇口轻涂一层机油。将油封(图2-72中B)装到工具3365上，然后慢慢推到气门导管上。 特别提醒:安装进、排气门前，须在气门杆上涂一层机油。 图2-72 安装气门杆油封 2.4气门导管的检查与更换 (1)气门导管的检查。将气门插入导管内，直至气门杆端部与导管端面平齐。因气门杆直径略有不同，进、排气门应装入各自的导管内，如图2-73所示，晃动气门头部测量进、排气门与导管的间隙，其磨损极限均为0.80mm。如果所测值超过磨损极限，应换上新气门再次测量。如果还超差，则须更换气门导管。 many n bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and leftcopper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Ta is theved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, sahem. of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred t Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tombsank psters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpseon situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tito West rear, to County Shen Liqun report guerrillas breakout Hou of acticulture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hidespeople with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine 11 图2-73 检查气门与导管间的间隙 (2)气门导管的拆卸。首先检查气门座镶圈及气缸盖密封面是否可修整，若不能修整，则不应更换气门导管。 如图2-74所示，将缸盖螺栓定位销A插入支承板孔2和孔3内，按气门角度(外侧进气门:21(5?;中间进气门: 15?;排气门:20?)将销子B插入孔内。 图2-74 插入缸盖螺栓定位销 如图2-75所示，用冲头3360压出磨损的气门导管:带台肩气门导管从凸轮轴侧压出;不带台肩气门导管从燃烧室侧压出。 图2-75 拆卸气门导管 (3)气门导管的安装。在新导管上涂一层机油，用冲头3360将其从凸轮轴侧压入冷态缸盖内直至台肩接触。导管台肩接触时的压力不得超过10kN(约1.0t)，否则台肩将会破裂。 气门导管可用手动铰刀3363扩孔，铰孔时用切削冷却液冷却。 2.5气门座的修整(研磨) 修理气门漏气的发动机时，仅研磨气门座及更换气门不足以解决问题，同时还须检查导管是否磨损，这对使用时间长的发动机尤为重要。气门座仅应修整到贴合状态良好即可，修整前须计算出最大允许修整尺寸。若超过修整尺寸，则不能保证液压挺杆正常工作，应更换气缸盖。 (1)计算最大允许修整尺寸。插入气门，紧压在气门座上。若气门本身需要换，则用新气门进行计算。 测量气门杆端部至凸轮轴中心轴线的距离(凸轮轴中心轴线与气缸盖顶面平行)。所测 left, "Huang Chi", originally Yue water hides e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town hasis th y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town12 得的距离减去最小尺寸(外侧进气门:34.0mm;中间进气门:337mm;排气门: 34.0mm)就等于最大允许修整尺寸，如图2-76和表2-11所示。 图2-76 气门座修理的尺寸 表2-11 气门座的修理尺寸 气门座 进气门座 排气门座 A φ26.2mm φ29.0mm B 最大允许修整尺寸 最大允许修整尺寸 C 1.5,1.8mm 约1.8mm Z 缸盖底面 缸盖底面 α(气门座锥角) 45? 45? β(上修正角) 30?? 30? γ(下修正角) 60 60? 如果最大允许修整尺寸等于0mm或小于0mm，则换一新气门并再次测量。若测量结果仍为零或小于0mm，则应更换缸盖。 (2)修整气门座。气门座的修整尺寸见图2-76所示。 2.6更换凸轮轴油封 (1)凸轮轴正时带轮上油封的拆卸步骤 ?拆下霍尔传感器上的密封圈，拆下齿形皮带上防护罩。转动曲轴将曲轴正时带轮转到一缸上止点，拆下气缸盖罩。 ?旋松张紧轮并从凸轮轴正时带轮上拆下齿形皮带，然后将曲轴往回转动少许。 ?用保持架3036将凸轮轴正时带轮固定住，旋松凸轮轴正时带轮上的螺栓，拆下凸轮轴正时带轮。 ?将凸轮轴正时带轮紧固螺栓用手拧入凸轮轴中，对油封拉出器起导向作用，如图2-77所示。 ?在油封拉出器的螺纹头上涂润滑油并尽可能深地拧入油封内，松开滚花螺丝，将内件对着凸轮轴转动直到拉出油封，如图2-78所示。 (2)凸轮轴正时带轮上油封的安装步骤: ?在油封的密封唇边口上涂少许润滑油，将导向套筒3241/2套在凸轮轴轴颈上，如图2-79所示。 ?把油封套到导向套筒上。 ?用力压套筒3241/1和螺栓3241/5将油封压到底，如图2-80所示。 ?接下来的安装顺序大体上按照拆卸的相反顺序进行。 culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hidespeople with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine many n bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and leftcopper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Ta is theved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, sahem. of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred t Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tombsank psters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpseon situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tito West rear, to County Shen Liqun report guerrillas breakout Hou of acti13 图2-77 装入油封拉出器导向螺栓 图2-78 拉出凸轮轴油封 图2-79 装入导向套筒 图2-80 装入凸轮轴油封 2.7霍尔传感器上的密封圈的更换 (1)霍尔传感器上密封圈的拆卸 ?按照图2-81中箭头方向拔下霍尔传感器(G40)上和插头。 ?拆下正时皮带上防护罩，拆下霍尔传感器本体及霍尔传感器的垫片和挡圈。 ?用手将螺栓2085/1拧入凸轮轴中，用以对油封拉出器导向，将拉出器2085的内件从外件中旋出两圈(约3mm)，然后用滚花螺丝拧紧，如图2-82所示。 ?在油封拉出器的螺纹头上涂润滑油并将其尽可能深地拧入油封内，松开滚花螺丝，将内件对着凸轮轴转动直到拉出油封，如图2-83所示。 e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town hasis th y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter townleft, "Huang Chi", originally Yue water hides 14 (2)霍尔传感器上密封圈的安装 ?在油封的密封唇口上涂少许润滑油，将导向套筒3241/2套在凸轮轴轴颈上，如图2-84所示。 ?把油封套到导向套筒上。 ?用力压套筒3241/1和螺栓3241/3将油封压到底，如图2-85所示。 ?安装带缺口的霍尔传感器挡圈到进气凸轮轴上。 ?安装垫片(锥形朝外)并拧紧固定螺栓到25N?m，安装霍尔传感器的本体并拧紧到10N?m。 ?安装正时带上防护罩，插上霍尔传感器的插头。 图2-81 拔下霍尔传感器插头 图2-82 装入油封拉器导向螺栓 图2-83 拧入油封拉出器 图2-84 装入导向套筒 people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine many n bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and leftcopper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Ta is theved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, sahem. of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred t Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tombsank psters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpseon situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tito West rear, to County Shen Liqun report guerrillas breakout Hou of acticulture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides15 图2-85 安装霍尔传感器上的密封圈 2.8凸轮轴的拆卸和安装 (1)凸轮轴的拆卸步骤: ?转动曲轴使凸轮轴正时带位于第1缸的上止点位置，拆下气缸盖罩，旋松张紧轮取下凸轮轴正时带轮上的正时带，将曲轴回转少许。 ?用保持架3036固定住凸轮轴正时带轮，旋松其螺栓，拆下凸轮轴正时带轮。 ?从凸轮轴上拆下半圆键，拆下霍尔传感器的本体及垫片和挡圈。 ?清洁轴承盖上两个箭头对着的凸轮轴驱动链条和链轮并用颜色标记出安装位置。注意链条不能用冲小点、刻槽或其它类似的方法来作标记。 ?将链条张紧器夹持架3366固定住凸轮轴正时调节器和链条张紧器，如图2-86所示。注意不要过度张紧，以免损坏凸轮轴正时调节器。 ?首先拆下进气凸轮轴和排气凸轮轴的轴承盖3和5，再拆下双轴承盖，最后拆下进气凸轮轴和排气凸轮轴链轮侧的两个轴承盖，如图2-87所示。 ?拧下凸轮轴正时调节器以及链条张紧器的固定螺栓。 ?对角交替旋松进气凸轮轴和排气凸轮轴的轴承盖2和4并且拆下。 ?连同凸轮轴正时调节器和链条张紧器及链条张紧器夹持架3366一起，拆下进气凸轮轴和排气凸轮轴。 图2-86 固定凸轮轴正时调节器 图2-87 拆卸轴承盖 (2)凸轮轴的安装步骤: 在安装凸轮轴时第1缸的凸轮轴必须朝上，安装轴承盖时从气缸进气侧应能看到轴承盖上的标记。 ?安装颜色标记所对应的驱动链条到两个相应的凸轮轴上。 left, "Huang Chi", originally Yue water hides e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town hasis th y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town16 ?更换凸轮轴正调节器和链条张紧器的橡胶(金属密封垫)并用密封胶“D454 300 02”轻轻涂抹有阴影线的表面，如图2-88所示。 ?安装驱动链条之间的凸轮轴正时调节器和链条张紧器。 ?在凸轮轴的运动面注油，将带驱动链条和凸轮轴正时调节器以及链条张紧器的凸轮轴装入气缸盖。拧紧凸轮轴正时调节器和链条张紧器到10N?m。 ?装上进气凸轮轴和排气凸轮轴轴承盖2和4并且对交替以10N?m的力矩拧紧。 ?安装进气凸轮轴和排气凸轮轴链轮一侧的轴承盖。检查凸轮轴正确的位置并以10N?m的力矩拧紧轴承盖,如图2-89所示。 ?拆下链条张紧器夹持架3366。 ?用密封胶D454 300 02轻轻涂抹双轴承盖中有阴影的表面，安装轴承盖并以10N?m扭矩旋紧。以同样的方式安装其余的轴承盖。如图2-90所示。 ?检查凸轮轴彼此之间的位置。接下来的装配大体上按照拆卸相反的顺序进行。 图2-88 更换金属密封胶 图2-89 安装轴承盖(1) 图2-90 安装轴承盖(2) 2.9凸轮轴正时调节的检查 凸轮轴的正时调节与负荷和转速有关。借助于凸轮轴正时调节电磁阀通向凸轮轴正时调节器(机械式调节器)上的油压变化，从而调整凸轮轴的正时。 (1)触发情况的检查 通过最终控制控制诊断来检查凸轮正时调节电磁阀的触发情况。如果电磁阀触发正常，则进行下一步，检查电磁阀。 (2)电磁阀的检查 测量电磁阀触头之间的电阻，如图2-91所示，正常值应为10,18Ω。如果电磁阀没有故障，则进行下一步检查。 culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hidespeople with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine many n bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and leftcopper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Ta is theved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, sahem. of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred t Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tombsank psters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpseon situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tito West rear, to County Shen Liqun report guerrillas breakout Hou of acti17 图2-91 检查电磁阀端子电阻 (3)凸轮轴正时调节器功能的检查 测试时应保证冷却液温度至少在80?以上。测试的仪器必须放置在后座位，否则测试仪器有可能使安全气囊打开而发生意外。 ?接通故障阅读仪V.A.G1551。起动发动机，选择“地址01”发动机电子控制。屏幕显示: 快速数据传输 帮助 功能选择XX ?按下“读测量数据组”功能键0和8，并用Q键确认。屏幕显示: 读测量数据组 帮助 输入显示组号XXX ?按下“显示组号26”功能键0，2和6，并用Q键确认。屏幕显示: 读测量数据组 ? 1 2 3 4 ?观察显示区3 中的显示。凸轮轴正时调节器没有被激活，发动机怠速时标准值为:××0;从第一档开始快速加速，转速高于4100rpm时凸轮轴正时调节器被激活，其标准值为:××1。 0?观察显示区4中的显示，无正时调节的标准值为:-3.0,3.0KW;有正时调节的标准 0值为:1.0,21.0KW。 ?按下?键，按0和6-结束输出，并用Q键确认。关闭点火开关。 ?如果显示区4显示的值在标准值范围以外，可能有如下故障: 凸轮轴正时调节器电磁阀在机械式凸轮轴正时调节器还没有达到终止位置时关闭了它的油压(例如太紧或局部咬死)。那么需要更换凸轮轴正时调节器。如果仍达不到标准值，则需更换发动机控制单元。 y here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here,cause Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long histormb, bes to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Toawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witnesem, crai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of thmy militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tse arTaishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japane six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves LiShi, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter townleft, "Huang Chi", originally Yue water hides e hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town hasis th18