帕金斯发动机机械燃油泵、手动油泵原理与技术参数资料

Mechanical fuel lift pump
帕金斯3012机械燃油泵
1 Before the fuel lift pump is removed from its
1在燃油泵从它的
1 For new engines: Fit the ’O’ ring into its bore, fit the
1新发动机：配合'氧'环到它的孔，配合
deflector (A19) with the flat face against the ’O’ ring
拨（A19）对O型圈的平面
and insert the push rod (A15) through the hole in the
将推杆（A15）通过的洞里
deflector. Use a new joint and fit the lift pump to its
导流板。使用一个新的关节，并配合电梯泵到它的
mounting. Retain securely with three bolts and their
安装。牢牢地用三个螺栓固定
spring washers.
弹簧垫圈。
2 Connect the fuel pipes.
2连接燃油管。
mounting, loosen each of the blanking plugs (A23)
安装时，松开的堵头（23）
which are over the three valves; als o loosen the body
这是在三阀；也放松身体
of the priming pump (A1) and the large plug (A8) over
该泵（A1）和大插头（A8）在
the plunger of the pump.
泵的柱塞。
2 Disconnect the fuel pipes and remove the bolts
2断开燃油管并拆下螺栓
which retain the fuel lift pump. Lift away the pump and
保留燃油泵。提起泵和
withdraw the push rod (A15), the deflector (A19) and
退出推杆（A15），拨（A19）和
the ’O’ ring (A18). For early engines, remove the
的O型圈（A18）。对于早期的发动机，删除
roller assembly (A11, A12, A13, A14).
辊组件（A11、A12，A13、A14）。
Note: For new engines, which have the fuel lift pump
注：对于新发动机，有燃油泵
mounted in the engine ’vee’, the plunger is retained in
安装在发动机的V形，柱塞保持在
the mounting plate for the fuel lift pump and can only
燃油泵的安装板和只能
be removed after the mounting plate has been
安装板后被拆除
removed from the engine and the plunger guide pin
从发动机上拆了柱塞导销
has been withdrawn.
已撤回。
3 If relevant, for early engines , remove the hourmeter
3如果有关，早期的发动机，拆下表
from the mounting of the lift pump and remove the
从电梯泵的安装和拆卸
mounting of the lift pump.
扬程泵的安装。
To fit - early engines
以适应早期发动机
1 Fit a new joint to the joint face of the timing case.
1配合一个新的关节到关节面的时间情况。
Fit the mounting over the protrusion of the drive shaft.
安装在驱动轴的突出部上的安装。
Fit the four bolts and spring washers and tighten
安装四个螺栓和弹簧垫圈，并拧紧
securely. If a new lift pump is to be fitted, remove and
安全。如果一个新的提升泵被安装，拆卸和
discard the external circlip, and withdraw the
丢弃外挡圈，取
assembly of the roller/tappet.
的滚子/推杆总成。
2 Fit the assembly of the roller/tappet in the bore of
2安装在孔辊/挺杆的装配
the mounting. Ensure that the two keys (A12) fit
安装。确保两个键（A12）适合
correctly in the keyways of the bore.
正确的孔键槽。

3 Put the ’O’ ring (A18) on the step in the bore, fit the

deflector (A19) with the flat face against the ’O’ ring

and insert the push rod (A15) through the hole in the

deflector.  Use a new joint and put the lift pump on its

mounting.  Retain securely with three bolts and their

spring washers.

To dis mantle and to assemble

For engines fitted with an hourmeter, proceed as

follows:

4  Apply a small amount of clean engine oil to the ’O’

ring on the spigot of the hourmeter and slide the

hourmeter into its location.  Turn the hourmeter to a

visually suitable position.

5  Ensure that the drive shaft of the hourmeter is

engaged correctly in the slot of the auxiliary drive

shaft.  Fit four bolts and the clamps to retain the

hourmeter to the mounting of the lift pump.

6 Tighten securely the bolts and fit the locking wire to

the heads of the bolts.

7  If an hourmeter is not fitted to the engine, fit the

blanking plate, complete with a joint, to the opening in

the mounting for the lift pump.  Fit the two bolts, with

spring washers, and tighten them securely.

1 Remove the priming pump (A1), the large plug (A8)

and the three small plugs (A23), the five valve springs

(A6, A21, A2), the four valves (A20, A4) and the

plunger (A15) of the pump. Check all the components

for wear and damage, and check the condition of

each spring.

The spring (A6) and the plunger (A5) of the pump are

supplied as a matched set of two.  The identification

of the components is given by a colour code and, if

necessary, they must be renewed as a set of two.

2  Dismantle the assembly of the roller/tappet and

inspect the components for wear and damage.

Renew a component if there is doubt about its

 

3  Check the action of the manual priming pump and

renew it as a unit if it is unserviceable.

4 Clean the inside of the body (A10) of the pump and

inspect the bores for marks of damage or scratc hes.

Check the condition of the valv e seats and also the

condition of the ’O’ ring (A9).

To assemble

1  Give a thin application of clean engine lubricating

oil to all the components, and assemble the pump. Fit

fiv e new sealing washers (A7, A22, A3) and tighten

securely the plugs and the priming pump.

2  Keep securely the push rod, the deflector, the ’O’

ring and the assembly of the roller/tappet until the fuel

lift pump is fitted to the engine.

2        2

1  To test for leakage, close the connection for the

delivery pipe and connect a supply of air at a pressure

of 193 kN/m  (28 lbf/in ) to the connection for the

suction pipe.  Check  for bubbles of air by the

immersion of the pump in a quantity of diesel fuel and,

at the same time, operate the plunger of the pump to

ensure that there is no leakage from the bore of the

tappet.

2  Further details of tests, which use special

equipment, are available from the manufacturer of the

pump, if necessary.