•In ordertoprotect your legal interest, it is forbidden to dismantle the fuel pump lead seal optionally
•
If
the injection pump were adjusted or lead seal were removed, the quality guarantee of the
company would become invalid immediately.
•We would not provide free service for the dismantled injection pump.
part,
•Turbocharger rotor shaft is of precise
quality guarantees of the company will
forbid disassembling and colliding, Otherwise the
be
of invalid.
•There are strict torques
Users don
of invalid.
•Before starting the
•Connecting rod bolt can
•Meaning of identification:
• Exhaust gas contains noxious composition, therefore it must
t loose
and
and
dismantle
engine,
t
tum
angles for the main bearing bolts and connecting rod bolts,
them,
check coolant and oil whether they are filled up or not.
be
reused.
otherwise the quality guarantees of the company will
be
discharged outdoors.
he
Cautions
1.
The engine has been tested strictly in accordance with the test stipulations in delivery. The
throttle has been
tle. Otherwise
users would better pay attention to this.
2.
The engine operator must read this Opf..ration and Maintenance Manual carefullytoknow the engines structure, and abide by the operation and routine rules in this manual.
3.
During use new engine, a
load operation is allowed.
sealed,
we
would not provide free service for returning product, replacement and repair,
it is forbidden to dismantle the seal optionally and to enlarge the throt-
50
hours runin must be carried through, during which period no over-
4. Mter start cold engine, the speed should be increased slowly. It is forbidden to run the engine
in high speed suddenly
gine immediately and run the engine in idling for 5 - 10 minutes.
5. Mter stop the engine,
the coolant, the coolant in water tank and diesel engine should be drained
6.
It is forbidden that the engine works without
7.
Applied fuel and lubricating oil must
strainer, and the special clean container is used. The fuel should be settled more than
hours.
8. Assembly
9.
The oil seal period of the engine is one year. Inspect the engine and adopt necessary measures
and
maintenance of the engine must be done by specialized personnel.
and
in idling for a long time.
if
the ambient temperature is lower than
air
be
accord with specified trademark and be filtered by
Mter
filter and unfiltered
removed the
oee
and
air
load,
dont stop the en-
no antifreeze is used in
off.
enters into the cylinder.
72
if
beyond a year.
10. Rated power and power correction are in accordance
Its
series diesel engine is manufactured by Weifang Weichai Deuzt Diesel Engine Company Ltd ( composed
Weifang Diesel Engine Works and Germany Deutz Company).
According to intake mode, 226B series diesel engine is divided into natural aspirating, turbo - charging,
charging and inter - cooling type. With3,4 and 6 cylinders, it is a high - speed, 4 - stroke, water - cooled, in
- line and direct - injection engine. It has advantages of reliable and economical in working, advanced technical
data,
low emission, good
range is
the following meanings:
1500r/min
T
-1800r/min
BD226B6 - D - X
low
- temperature start, simple operation and convenient maintenance. The speed
and
power range is 30
-135kW.
The symbols in each typeofengine represent
turbo-
of
I
I
..
I
I
'-------
1...-
1...-
1...-
L.-
Nameplate is fitted on the engine in delivery, model, design number, power, speed, serial number, manufacturer,
address, manufacturing date and weight are marked on the nameplate. Each design number corresponds to
certain engine, each model may has several design numbers. The serial number is marked on the cylinder block
3.Ild
located under the oil filter seat.
data,
This manual introduces the main technical
inspection points of 226B series diesel engine. it applies
to
In order
refertostructures and the engine operating methods so astoplay its active role.
With the development of the production technology, the construction, accessories and performance parameters of
226B engine will
one,
make 226B series diesel engine provide better service
be
improved gradually. The product in the manual maybeslightly different
pay attention to the supplementary manual. It is subjectedtochange without notice.
construction features, operation and maintenance methods and
6 Gear case cover7 Oil pump8 Crankshaft belt pulley9 Speed sensor
10Fan
15
19
11
Inspirator12 Water pump
Cylinder head cover
16
Piston20 Cylinder liner
13
Cylinder head
Water outlet pipe
21
Connecting rod22 Rear oil seal cover23 Flywheel
17
Intake valve
14
Rocker arm and rocker arm support
18
Exhaust valve
24 Flywheel housing
11
1
(on
the flywheel housing)
3.1.2
Cross section view of D226B
16
----___+_
15----F-
14
------l~-___=+~.t"rn~..,.,~~
13--------k"
12-----....
-4
diesel engine
17
18
19
20
I
-"I!=-------
~------22
~~~\-~--tt-------
21
23
11-----
10-----"....:~---W
9
---::~=_fI4---,.._r~1f';1
8-----'-oo~-r
7---r---1'n,;;\i
~~~
6-----
5-----~
4
-------;--'1-\
3-------~~'-
I
ft---+liH-++------
/<:JT--25
/
2--------
1--------~
1 Oil sump2 Pre - filter3
Two
- stage balancing mechanism4 Cylinder block
\......::::=-.+----.;;;::::.:..JJt::i
5 Crankshaft6 Engine stop lever 7 Camshaft8 Fuel supply pump
Oil
pipe(toinjection pump)
9
13
High - pressure pipe14 Push rod
17 Rocker
21
Injection pump22 Cylinder head
ann
18
Cylinder head cover19 Water outlet pipe20 Intake/exhaust valve
10
Oil
filler (various position)
"15
23
Exhaust pipe16 Intake pipe
Piston24 Connecting rod25 Oil dipstick
26 Oil filter27 Safety valve28 Oil drain plug
~-----28
11
Tappet
24
27
(or
piston pump)
12
Injection
pump
and
governor
Note: For 3 - cylinder and 6 - cylinder engine, there is
12
no
two
- stage balancing mechanism.
30
2 CyJ.inder block subassembly
Cylinder hlock suhassemhly mainly consists of cylinder hlock, liner, gear case, rear oil seal cover, flywheel
housing and oil sump.
(£1
2
3
4
E
D
5
ctJl
A
1 Gear case(front cover)2 Cylinder hlock
4 Flywheel housing5 Rear oil seal cover
7
Oil
sump8 Seal strip9 Seal plate
When
A structure is adopted, coat seal glue on Djoint face; When B structure is adopted, coat seal glue
both
D and E joint face.
Cylinder hlock is made of high - strength cast iron, it has
3 Cylinder liner
6 Main bearing cap
Fig 1
good
strength and rigidity. For
13
B
3,4
and 6 - cylin-
on
der engine, cylinder block has4,5 and 7 main bearings separately. The thrust ring isfitted on the first main
bearing (flywheel
then
t"e
cap is turned for 90: Tightening order is
then tighten the bearing on both ends. For camshaft hearing holes
end)
is fitted with bronze camshaft bushing. There are
oil hole in cylinder block in mounting, another one should
engine and turbocharged and inter - cooled engine, a jet per cylinder is mounted on the right of cylinder
block
(~ewed
end).
from flywheel
The main bearing cap is tightened by
end)
for cooling piston.
showninfig
two
holes in the bushing, one of them is aimed at the
be upwards. (shown in fig
MI4
-10.9,
the torque is about 70Nm and
2. First tighten the main bearing in middle,
in
cylinder block, only the last one (free
3).
For turbocharged
Fig 2
Camshaft bearingl
"'XA~:i'~:-'\
r:
"'<~>
i
l,
I>"",
\\
""''''.
"',.,.,.,
....
""
.~...........
"'"
I
v1'"
~
>-[
----
1 _
'"
--~~
Fig 3
""".,,"
'"
Fig 4
226B series diesel engine adopts wet cylinder liner. In order to guarantee sealing after assembling, there are
two
rubber seal rings on the upper and lower locating positions of the liner respectively. The lower seal ring
is set up in the seal groove on cyHnder block and the upper one is set up in the seal groove on the upper end
14
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