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旧 Apr 6th, 2008, 19:01     #1
sludgegine
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默认 【原创】图文精解:更换lower intake manifold gasket

声明:
1.本贴所描述的方法和程序,仅适用于本人自己。任何其他人采用此方法和程序,造成人身或财产损失的,本人概不负责。特此声明!
2.本贴所载图片及文字描述,版权归本人个人所有(文中特别指出的除外),任何人采用时如涉及第三者,需向本版权人声明,经同意后方可使用,且本人免责声明在先。

原创者:sludgegine 于2008年4月6日



*********************************************************************************



车型:2000年Pontiac Grand Am Se V6 3.4L
主要工具:
1.torque wrench
2.sockets and ratchet wrench tool sets.
3.screw driver
4.plumbing plier
5.light
6. scraper
7.safety glasses
8.spark plug gapper
9. heavy duty bar and hoist bracket.(specially made by myself)
10. wire brush

主要材料:
1. new Lower Intake Manifold Gasket Kit (bought in CT, made by Fel-pro, at $135+tax)
2. one bottle of coolant
3. RTV, Thread locker
4. New spark plug and wire sets
5. New thermostat
6. engine oil & oil filter
7. WD 40
8. throttle body cleaner
9. anti-seize


其它:
1。rags
2. towels
3. plastic basin(or any big size container)
4. funnel
5. rubber gloves
6. a piece of iron wire

开工前准备:
1。将车四轮用木块顶死,手刹也可。
2。灯光布置到有利于工作的角度。
3。车HOOD下的车身两侧用大块的废旧床单或塑料布覆盖,以保护paint.

部分材料图示
a. upper intake manifold gaskets and valve cover gaskets

[IMG]http://img512.imageshack.us/img512/2219/dscf0007sp7.jpg[/IMG]

b. Lower intake manifold gasket(2pcs)


[IMG]http://img374.imageshack.us/img374/180/dscf0004mx4.jpg[/IMG]

c RTV

[IMG]http://img135.imageshack.us/img135/3185/dscf0009bf9.jpg[/IMG]

d. new Champion spark plugs and gapper.

[IMG]http://img524.imageshack.us/img524/9139/dscf0002qg1.jpg[/IMG]

生活,就是与家人在一起,平静地过日子。以远离政治,节制欲望,度事宽容为生活法则。博弈是资本游戏的灵魂!博弈状态的把握结合技术分析可无往不胜。
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感谢 sludgegine
此篇文章之用户:
scuba1995 (May 2nd, 2009)
旧 Apr 6th, 2008, 19:02   只看该作者   #2
sludgegine
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默认 1.拆除hood

由一个helper扶住hood, 拆下固定HOOD的四个螺丝。
[IMG]http://img237.imageshack.us/img237/2992/dscf0013ov6.jpg[/IMG]
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旧 Apr 6th, 2008, 19:09   只看该作者   #3
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默认 2.切断电源

拆除负极(黑色端线),并用干燥的布包裹捆扎,保证不与车体金属接触。如果车有security system, 先disengaged.(按手册说明)
[IMG]http://img381.imageshack.us/img381/4094/dscf0019wg0.jpg[/IMG]
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旧 Apr 6th, 2008, 19:11   只看该作者   #4
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默认 3。排空冷却液

先将coolant reservior的盖子拧下来。在冷却液排出口下方放置一个塑料盆,用HEX WRENCH逆时针转动车的radiator的右下角plug。

[IMG]http://img170.imageshack.us/img170/258/dscf0012bf5.jpg[/IMG
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旧 Apr 6th, 2008, 19:14   只看该作者   #5
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默认 4. drive belt脱离。

先拆除coolant reservior旁边的这个银色盒子(first remove electrical connector clip),然后将drive belt脱离pulleys and alternator.右侧的两根管子也拔下来。
[IMG]http://img166.imageshack.us/img166/8169/dscf0020mv1.jpg[/IMG]
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旧 Apr 6th, 2008, 19:14   只看该作者   #6
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默认 5. 下alternator

a. 一共要拆两个bolt,一个nut.一个bolt位于正面,一个左侧。nut在左侧bolt的后面。要用长套筒加extension。

[IMG]http://img266.imageshack.us/img266/5962/dscf0021gd4.jpg[/IMG]

b. disconnect electrical connector clip and red cable( a nut is needed to be removed).


[IMG]http://img511.imageshack.us/img511/3485/dscf0027tj8.jpg[/IMG]
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旧 Apr 6th, 2008, 19:19   只看该作者   #7
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默认 6. 拆tensioner pulley

a.各两个pulley,各由一个bolt固定。
[IMG]http://img510.imageshack.us/img510/7607/dscf0022ou6.jpg[/IMG]

b.接着把这两个brackets也一并拿下。

[IMG]http://img522.imageshack.us/img522/4334/dscf0029xm5.jpg[/IMG]
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旧 Apr 6th, 2008, 19:26   只看该作者   #8
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默认 7. 移动power steering pump assembly(PSP)

a. 吊住engine assembly,使其不下沉。(有的人用支撑物顶engine oil pan)

[IMG]http://img247.imageshack.us/img247/528/dscf0078vt9.jpg[/IMG]

吊环利用engine hoist bracket.

[IMG]http://img516.imageshack.us/img516/7099/dscf0079xv2.jpg[/IMG]

b. 拆这个engine mounting bracket.

[IMG]http://img368.imageshack.us/img368/3339/dscf0077qc5.jpg[/IMG]

c. 透过PSP上的三个孔,用套筒拆除三个mounting bolts. 然后将engine mounting bracket恢复,移下hoist stuff.

d. 左边基本告一段落。接着右边。

[IMG]http://img90.imageshack.us/img90/928/dscf0031nu9.jpg[/IMG]
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旧 Apr 6th, 2008, 19:32   只看该作者   #9
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默认 8. 下air filter assembly

a. 先将air filter assembly相连的那些electrical clips拆下(注意:做好mark,以便装回)。
b. 松开air filter housing的两颗固定螺栓,再松开固定throttle body与air intake hose的clamp.这样将air filter assembly+air intake hose一块拿下。(我是分拆的)

[IMG]http://img514.imageshack.us/img514/9306/dscf0032qr8.jpg[/IMG]


[IMG]http://img218.imageshack.us/img218/4962/dscf0036ay1.jpg[/IMG]

[IMG]http://img514.imageshack.us/img514/2084/dscf0037tr0.jpg[/IMG]

注意:如果长时间没有clean throttle body,以前车有idle high的毛病,此时真是解决问题的好时刻。看上图。
用左手转动半圆形throttle control, 使throttle valve张开,右手持throttle body cleaner,向valve开合部位有黑色积碳的地方喷。如此喷、洗,将积碳软化或溶解。用干净的软布,试试擦拭throttle body 内部。再反复喷、洗,再擦拭。如此几个来回,基本可以清除其内部积碳。


c. 拆throttle cable(俗称“油门”拉线)
需要拆:throttle body顶上有两个bolt,下面有一个nut. 然后将拉线末端从throttle上拆下来(左手逆时针转动throttle半园型臂,右手用平头screw driver将clip顶出半园型臂)

[IMG]http://img90.imageshack.us/img90/2/dscf0042dl9.jpg[/IMG]


d. 接着拆除上图中那根环绕engine的黑色铁管,以及所有与engine体相连的hose.(无图细解,use your common sense.)

e. 拆除exhasut pipe shield (盖在排气管上面的银色铁皮),小心,不要划坏相邻的管线。
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旧 Apr 6th, 2008, 19:40   只看该作者   #10
sludgegine
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默认 9. 拆coil pack

a.在拆除coil pack前,先将spark plug wire sets拔下(注意:要记录六条线在pack与spark plug之间的连接关系,不要搞错。)

两个bolt在upper intake manifold上,两个nuts在engine后valve cover下沿(用长套筒+extension)

[IMG]http://img138.imageshack.us/img138/3914/dscf0046mv0.jpg[/IMG]
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旧 Apr 6th, 2008, 21:43   只看该作者   #11
sludgegine
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默认 10. 拆除EGR和MAP SENSOR

a. EGR位于下图的中央偏右,那个圆形物。它由两个bolt与engine的upper intake manifold连接。拆下这两bolt.


[IMG]http://img363.imageshack.us/img363/1696/dscf0084bb9.jpg[/IMG]


b. MAP Sensor

位于下图右侧这个长方形塑料盒子(连着一根细塑料管),先拔下连接着的绿色elec. clip以及细塑料管另一端与engine的连接。


[IMG]http://img503.imageshack.us/img503/1630/dscf0061yk1.jpg[/IMG]

c.将所有剩余elec. connectors 和 hoses, tubes,一律从engine体拔除(注意:做好必要的标记).
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旧 Apr 6th, 2008, 22:03   只看该作者   #12
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默认 11. 揭盖头(remove upper intake manifold--UIM)

a. 拆除固定UIM的六个bolt.

[IMG]http://img144.imageshack.us/img144/7537/dscf0085sl0.jpg[/IMG]


b. 拿下UIM.

[IMG]http://img144.imageshack.us/img144/1671/dscf0088cr3.jpg[/IMG]

c. 拆除UIM后,暴露出来的Lower intake manifold(LIM)。

[IMG]http://img405.imageshack.us/img405/2845/dscf0091yr2.jpg[/IMG]
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旧 Apr 6th, 2008, 22:10   只看该作者   #13
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默认 12. 拆除thermostat housing and thermostat

a. 鼗LIM的六个孔用布堵住,防止进异物。

b. thermostat housing位于下图的下半右部,与LIM一体,一端连接着黑色的铁管。它由两个bolt固定。

[IMG]http://img255.imageshack.us/img255/5572/dscf0102er6.jpg[/IMG]
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旧 Apr 6th, 2008, 22:19   只看该作者   #14
sludgegine
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默认 13. 拆除fuel rail assembly(FRA)

a. 先松掉固定fuel inlet tube的螺丝。沿下图中金黄色带一园形物的金属管向engine体下方,可看见那个螺丝。这里需要极大的耐心,只能用搬手,套筒下不去,而且搬手可移动的空间极小!!!

[IMG]http://img505.imageshack.us/img505/3788/dscf0101ux3.jpg[/IMG]


b.拆下固定 FRA顶部的两个bolt.
参见第12步图。


c. 清理LIM顶盖及周围灰土、杂物。(注意:这一步非常重要,否则这些东西会掉到engine里)我用的是这个家伙,进气管用1/2英寸的塑料管连接,提高清理效率和灵活度。

[IMG]http://img107.imageshack.us/img107/4585/dscf0094ft2.jpg[/IMG]


d. 消除fuel pressure.
***在FRA的passenger side,其顶端有一个黑色的塑料帽,用手将它拧下来。

http://img520.imageshack.us/img520/794/dscf0097dg2.jpg


然后,一手拿一块RAG,右手用小螺丝刀轻轻顶里面的针头,fuel pressure将被消除。

[IMG]http://img411.imageshack.us/img411/8346/dscf0098mj9.jpg[/IMG]


e.在fuel injector周围喷一些WD40,等几分钟后,轻轻用手摇动FRA,直到fuel injectors全部脱离LIM。(注意:要非常小心,不要损坏任何FRA上的东西)

e. 用铁丝将FRA吊起,以不妨碍下一步工作为宜. 注意:不要使injector受力,以免损坏.

[IMG]http://img383.imageshack.us/img383/1486/dscf0108sm5.jpg[/IMG]





*此拆除FRA方法,系本坛“白云黄鹤”师傅指教,特此声明并致谢。*
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旧 Apr 6th, 2008, 23:08   只看该作者   #15
sludgegine
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默认 14. 拆除前后valve cover(VC)

各由四枚bolt固定。

a. 前VC.


[IMG]http://img508.imageshack.us/img508/4986/dscf0103xe7.jpg[/IMG]

b, 后VC



[IMG]http://img338.imageshack.us/img338/8345/dscf0121uw0.jpg[/IMG]

c. 清理被污染的VC内腔。

[IMG]http://img219.imageshack.us/img219/8171/dscf0104ib6.jpg[/IMG]
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旧 Apr 6th, 2008, 23:12   只看该作者   #16
sludgegine
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默认 15. 揭Lower Intake Manifold(LIM)

a.拆除固定LIM顶部的四颗bolt,再拆除LIM两侧四角的四个bolt. 由于空间狭小,这里要花些时间一点一点拆。

[IMG]http://img137.imageshack.us/img137/2627/dscf0109wv6.jpg[/IMG]



http://img404.imageshack.us/img404/3176/dscf0110ei6.jpg
By sludgegine


[IMG]http://img404.imageshack.us/img404/2417/dscf0111tx5.jpg[/IMG]

注意:从这张图,可以清楚地看到coolant从哪儿漏出来了。

b. 将LIM拿下。
注意:由于RTV可能将LIM与HEAD粘住,需要先使LIM松动才能拿下来。方法是:用一根撬棍(或长柄物件)抵住上图中thermostat housing下沿,轻用力晃动。不要用大力,更不能直接撬head-LIM mating face,那样会造成难以修复的划伤。


[IMG]http://img522.imageshack.us/img522/7404/dscf0123gb7.jpg[/IMG]



c. 拆下的LIM要进行彻底清理。

[IMG]http://img182.imageshack.us/img182/638/dscf0133wi8.jpg[/IMG]
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旧 Apr 6th, 2008, 23:29   只看该作者   #17
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默认 16. 拆除push rods.

a. 首先将engine V型底部用一块布遮盖住,防止异物落入camshaft.(非常重要!!)(有门和白云黄鹤都提到这一点,特此致谢)

b.逐一拆除push rods.按对应位置,逐一插入一个纸箱。前后各六根,共十二根。参见15-b.

c. 插入纸箱内的push rods

[IMG]http://img247.imageshack.us/img247/1271/dscf0132fq9.jpg[/IMG]

d. 将原LIM gasket拿下来。

[IMG]http://img144.imageshack.us/img144/3921/dscf0136yo9.jpg[/IMG]
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旧 Apr 6th, 2008, 23:43   只看该作者   #18
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默认 17. 清理engine内腔及head--LIM mating face.

a. vacuum engine inside thoroughly.

b. clean engine head--LIM mating face with scraper.

注意:要保证清理后表面干净,无油,无水。用scraper时要小心,不要损坏表面。


[IMG]http://img136.imageshack.us/img136/4822/dscf0137sp7.jpg[/IMG]


[IMG]http://img136.imageshack.us/img136/9153/dscf0146yy7.jpg[/IMG]



[IMG]http://img212.imageshack.us/img212/8092/dscf0145op2.jpg[/IMG]


c. 至此,拆除工作基本结束。
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旧 Apr 6th, 2008, 23:56   只看该作者   #19
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默认 以上内容是关于拆除工作,接下来将进行安装。

在进行安装之前,要做的一些准备工作:
1. vacuum所有存在杂物和灰尘的地方,尤其是发动机内部,尽量打扫干净。更不要把工具和盖布忘记在里面。
2. 把将要用到的材料和工具搬放到合适的位置,以便提高工作效率,也防止丢三落四。
3. 对已经清理过的valve cover, LIM, UIM, HEAD等部位进行最后检查和处理。
4. 所有bolts,nuts的thread内的附着物。

安装基本按照拆除的过程反序进行。
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旧 Apr 7th, 2008, 21:00   只看该作者   #20
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默认 18. 安装new Lower Intake Manifold Gasket(LIMG)

a. LIMG共两片,对称安装在HEAD上。
b. 要注意LIMG安装的方向,和正反面(可在拆除原LIMG时注意这一点,做好笔记)
c. 放好LIMG后,将engine底的盖布取出,以防忘记。


[IMG]http://img262.imageshack.us/img262/6876/dscf0014tk9.jpg[/IMG]
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