主机高压油泵

M V BEAGLE I

THE HANSHIN DIESEL WORKS,LTD MAN B&W 7S35MC Mk7

ENGINE No: 7S35MC

Fuel Pump Roller Guide Checkin g

高压油泵滚轮导向机构检查

Roller guide mounted in engine

当机构装在高压油泵上时的检查

The fuel pump roller guide can be partially checked while mounted on the engine ,using the following procedure :

当机构安装在油泵上时,按以下方法可以对其一部分进行检查.

1. Lift the fuel pump roller guide .See Procedure 909-16 .

按909-16的步骤抬起导向机构

2. Remove the cover on the camshaft housing to inspect the fuel

pump roller guide .

拿掉油泵上凸轮轴的盖板对机构进行检查.

Turn the engine to provide the maximum space between the roller guide and the cam disc .

进行主机盘车到机构与凸轮片间空隙最大时停止

Turn the roller by hand to check that it can move freely and without unnecessary resistance or “hand” points .

用手转动滚轮,检查其是否转动得平稳,无额外阻力,容易转动

Also inspect the surface of the roller for possible damage marks ,seizures or scratches .Make sure that there are no traces of bearing metal left in the roller guide housing .

还要检查滚轮表面是否损坏,咬住或刮擦的痕迹,及里面是否有轴承金属的粉末等

Check the clearance in the slide bearing by lifting the roller relative to the roller guide and measuring the difference in distance between the cam disc and the roller in the upper and lower positions of the roller .

将滚轮提起,检查滑动轴承的间隙及当凸轮片在最高,最低位置时同滚轮间的间隙差

3. Lower the roller guide onto the fuel cam again .

See Procedure 909-16 .

按909-16的步骤将导向机构放回凸轮上方

Roller guide removed from engine

当将滚轮导向机构卸下时的检查方法

A more suitable and reliable method is to check the roller guide and the bearing clearance after the roller guide has been dismounted :

更准确,更可靠的检查方法是将导向机构拆下后进行检查

4. Dismount the roller guide from the engine .

See Procedure 909-15.2.

按909-15.2的方法将导向机构拆下

5. Check the surface of the roller and the sliding surfaces of the

roller guide .and measure any ovalness .

检查滚轮的表面及导向机构的滑动表面,测量椭圆形的表面

6. Turn the roller guide upside down and land it in a vertical

position on a couple of planks ,with the roller hanging freely .

将导向机构直立的倒放在两块厚木板上,保持滚轮的自由转动(不要通过影响其转动的方法来放置机构)

Measure the clearance in the slide bearing by placing a dial gauge against the roller and lifting the roller as much as the clearance permits .

在滚轮上方放一百分表,尽量提起滚轮,来测量滑动轴承的间隙

Fuel Pump Roller Guide Dismantling

高压油泵导向机构拆解

Note ! 注意

Before dismantling any part of fuel pump ,make sure that the pump has been relieved of pressure and that all oil has been drained off .

在拆解高压油泵任何部件之前,都要先确定已经释放压力且已将燃油泄放掉

1. Dismantle the top cover with the barrel/plunger assembly .

See Procedure 909-5.2.

按步骤909-5.2.的方法首先拆掉高压油泵的顶盖及柱塞套筒偶件

2. Turn the engine until the roller guide rests on the lowermost

part of the fuel cam .

主机进行盘车,直到滚轮处在凸轮的基圆上为此.