Perkins3012發動機噴油器故障的檢查與維修

Perkins3012發動機噴油器故障的檢查與維修

A fuel injector fault c an cause an engine misfire.

噴油器故障C引起Perkins3012發動機失火。

In order to find which injector is defective, operate the

為了找到該噴油器是有缺陷的，操作

engine at a fast idle speed. Loosen and tighten the

Perkins3012發動機處于怠速轉速。放松和收緊

union nut of the high-pressure fuel pipe at each

高壓燃油管接頭螺母

injector. When the union nut of the defective injector

噴油器。當聯合螺母的有缺陷的噴油器

is loosened, it has little or no effect on the engine

被松了，它對Perkins3012發動機的影響不大

speed.

速度。

Warning! Ensure that the fuel does not spray onto

警告！確保燃油不噴到

your skin.

你的皮膚。

How to remove the fuel injectors

如何拆卸噴油器

1 Disconnect and remove the high-pressure pipes

1斷開并拆下高壓管道

and the spill pipes. For early engines, remove the

和泄漏管道。對于早期的Perkins3012發動機，刪除

relevant rocker box cover. Release the connection for

相關搖桿箱蓋。釋放連接

the leak-off fuel from the fuel injector and remove it

燃油噴射器上的泄漏燃油并將其拆下

through the wall of the rocker box. For later engines,

通過搖桿箱的墻。對于后來的Perkins3012發動機，

remove the relevant pedestal rocker cover.

拆下相關的底座搖桿蓋。

2 Release the relevant clamp and withdraw the fuel

2釋放相關的夾具并提取燃油

injector. To remove a tight fuel injector, use the Slide

噴油器。要移除燃油噴射器，使用幻燈片

Hammer, 21825 849 (A1) and the relevant Adaptor

錘，21825 849（A1）和相關的適配器

(A2): 21825 854 for M18 threads or 21825 860 for

（A2）：21825 854或21825 860 M18螺紋

M14 threads.

M14螺紋。

Caution: Ensure that the copper fuel injector sleeve

警告：確保銅燃油噴射套管

is not loosened in the cylinder head during the use of

在使用過程中不松動的氣缸蓋

How to correct the fuel injector sleeves

如何正確的噴油器套筒

To improve the condition of the injector sleeves, us e

為了改善噴油器套筒的情況，我們的

the Reamer/facer tool for the injector sleeve. Grease

用注射器套刀/機工具。潤滑脂

must be applied to both of the cutters before use, to

在使用之前，必須將其應用于刀具前

retain carbon and metal particles. Do not remove

保留碳和金屬粒子。不要刪除

more metal than is absolutely necessary to correct the

金屬比絕對要正確

seat face. The max imum permissible depth of the

座面。的最大允許深度

seat face, measured from the top face of the cylinder

座椅面，測量從氣缸頂部的面

head, is 104,25 mm (4.104 in).

頭，是104,25毫米（4.104英寸）。

Note: The Reamer/facer tool is assembled from

注：鉸刀/機工具組裝

these tools: 21825 765, 21825 767 and 21825 768.

這些工具：765 21825，767 21825和768 21825。

How to fit the fuel injectors

如何安裝噴油器

1 Check that the new injector is fitted with a new ‘O’

1檢查新的噴油器是否安裝了一個新的“鄰”

ring seal in the machined groove near to the top of the

在加工槽附近的環密封的頂部

stem and check that the sleeve for each fuel injector

閥桿和檢查各噴油嘴的套筒

is c lean.

是靠。

2 If relevant, remove the connection for the leak-off

2如果有相關的話，刪除連接泄漏

fuel from each fuel injector and fit carefully each fuel

燃油從每一個噴油器，并小心地每燃料

injector into its sleeve, with the threaded hole for the

噴油器為其套筒，用螺紋孔為

leak-off fuel toward the outer wall of the rocker box.

向搖桿箱外壁泄漏燃料。

DO NOT use a sealing washer between the injector

不要使用噴油器之間的密封墊圈

and the seating face of the injector sleeve

噴油嘴的密封面

3 Fit the assembly of the metal cup and rubber seal

3配合金屬杯和橡膠密封件的裝配

against the head of each connection for leak-off fuel

對泄漏燃料的每一個連接頭

and fit a new copper washer onto the thread. For

在螺紋上安裝一個新的銅墊圈。對于

early engines, insert each connection through the

早期的引擎，插入每個連接通過

openings in the outer walls of the rocker boxes and fit

在搖桿框和配合的外壁上的開口

the connection into its fuel injector, finger-tight.

連接到噴油器，手指緊。

4 Fit the clamps to the relevant fuel injectors,

4將夾具安裝到相應的噴油器，

complete with a spherical washer for each clamp. Fit

用一個球形墊圈來完成每個夾子。適合

the cap screws through the washers and the clamps

帽螺絲通過墊圈和夾子

and tighten them to 60 Nm (44 lbf ft). For early

擰緊60牛米（44磅英尺）。早期

engines, when all the cap screws of the clamps are

Perkins3012發動機，當所有的蓋螺釘的卡箍

tight, tighten the connections for leak-off fuel to 27 Nm

緊，擰緊泄漏燃料的連接到27納米

(20 lbf ft).

（20磅英尺）。

5 Check that the joint face of each rocker box is

5檢查各搖桿箱的接頭面是否

c lean. Fit a new joint for each rocker box cover and

C精益。為每個搖桿箱蓋安裝新接頭

align correctly the bolt holes.

正確對齊螺栓孔。

6 Fit c arefully each roc ker box cover and fit the

6適合C全每個ROC芋箱蓋并安裝

eight bolts , complete with plain and spring was hers.

八個螺栓，完全用平和彈簧是她的。

Tighten the bolts to 27 Nm (20 lbf ft). For later

擰緊螺栓27牛米（20磅英尺）。以后

engines, fit a new ‘O’ ring around the groove near

Perkins3012發動機，配合一個新的'鄰'環附近的槽附近

the top of each fuel injector. Fit the pedes tal roc ker

各噴油器頂部。適合足鱟ROC芋

cover and tighten lightly all of the bolts . Tighten

蓋并擰緊所有螺栓。擰緊

ev enly all of the bolts, in the s equence shown (A),

電動車突然所有的螺栓，在序列顯示（一），

to a torque of 11 Nm (8 lbf ft).

到11 Nm的扭矩（8磅英尺）。

7 For all engines, fit new copper sealing washer to

7為所有Perkins3012發動機，安裝新的銅密封墊圈

the connections for leak-off fuel and fit the pipes

泄漏燃料的連接和安裝管道

between the fuel injectors and the connection block

在燃油噴射器和連接塊之間

for the leak-off fuel. Tighten securely each banjo bolt

為泄漏燃料。安全擰緊每個空心螺栓

connection and each union nut.

連接及各連接螺母。

8 Fit each high-pressure fuel pipe between its

8配合各高壓燃料管之間

delivery valve and its fuel injector. Tighten by hand

輸送閥及其燃油噴射器。用手擰緊

each nut. DO NOT bend a pipe to make it fit between

每一個螺母。不要彎曲管道使其適合于

its connections. Tighten securely each nut to 45 Nm

它的連接。擰緊每個螺母至45納米

(33 lbf ft).

（33磅英尺）。

Note: The identification of each high-pressure fuel

注：每一個高壓燃料的識別

pipe is made by the cylinder number which is stamped

管是由缸號，這是加蓋

on the union nut which is fitted to the fuel injector.

在燃油噴射器上安裝的聯螺母。

9 Fit new rubber dampers around each high-pressure

9安裝新的橡膠減震器周圍的每一個高壓

fuel pipe. Fit the shrouds over the rubber dampers

燃料管。將籠罩在橡膠阻尼器

and retain securely each s hroud to its induction

和牢固地保持各hroud其感應

manifold with bolts and spring washers.

帶有螺栓和彈簧墊圈的流形。

10 Eliminate air from the high-pressure fuel system

10消除高壓燃油系統中的空氣

as given on page 27.

如頁27。

11 Run the engine and check for leaks.

11運行Perkins3012發動機并檢查泄漏。

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