plete life cycle, which amounted to 1,250,000
After-sales service with a frequency of 30.0
km, significantly more resources 1 000 000 km, set by
thousand km (S-30000km.)
the manufacturer! [ 22 ] .
after-sales service with a frequency of 45.0
In
[ 22] shows a detailed
information
about
thousand km (S-45000km.)
the district aspredelenie failures buses Mercedes-Benz
After-sales service with a frequency of 90.0
O 405 for systems and units on the run 0 ÷
thousand km (S-90000km.)
1250 you s.km (tablitsa №3)
Table 3.
Distribution of failures of Mercedes-Benz O 405 buses by systems and aggregatesat a range of 0 ÷ 1250 thousand km
The
f
il-
s
ce
o
it
Total
amount of
s
un
ic
f fa
bu
ic
%
№
Name of units and
er
if
ht,
o
expense failure
if
costs per
rt
un
te
ht
parts
l bo
ec
%
er
ec
pa
ra
repair parts ,
bus ,
per
ta
Sp
weig
Numb
o
thousand soums
Sp
weig
thousand
T
ures per
Numb
soums
Suspension and
1
8
3455
15.7
86.4
3234058,0
25.8
80851.5
suspension
Electrical
2
25
2622
11.9
65.6
1280,170.4
10,2
32004.3
equipmente
Engine cooling
3
16
1847
8.4
46.2
771802.1
6.2
19,295.1
system
4
Engine OM 447 N
12
1860
8.5
46.5
739 625.6
5.9
18,490.6
Automatic gearbox
5
21
1801
8.2
45.0
556,143.1
4.6
13903.6
ZF 4 HP 500
Reliability-limited reliability
52.7
Chassis, bodywork
6
27
1807
8.2
45,2
1696536,4
13.6
42,413.4
and superstructure
7
Brake system
20
1362
6.2
34.1
859935.2
6.9
21498.4
Heatingis,
8
17
1364
6.2
34.1
770737.7
6.2
19268.4
and circulation
36
Журнал «Интернаука»
№ 16 (145), часть 3, 2020 г.
Serviceability Limit Reliability
79,4
9
Front axle
16
1035
4.7
25.9
534,726.4
4.3
13368.2
10 Rear axle
27
1094
5,0
27.4
571,869.7
4.6
14,296.7
11 Steering
7
802
3.6
20.1
468,990.8
3,7
11724.8
Fuel system
12
22
499
2,3
12.5
385,402.4
3,1
9635.1
Fuel pump
13 Compressor
fifteen
621
2,8
15,5
328,116.7
2.6
8202.9
14 Cardan drive
2
46
0.2
1,2
43055.8
0.3
1076.4
Electrical
15 equipmente
12
1558
7.1
39.0
196674,2
1,6
4916.9
Body
16 Engine mount
4
200
0.9
5
74,597.7
0.6
1864,943
Total
251
21974
100
549.3
12512442.1
100
312811,1
Source: calculated by the author based on data from
For
example , for reliability of
the
en-
the Mercedes-Benz service in Tashkent
gine I ( (table № 4) on the reliability of the engine cool-
Reliability and maintainability indicators were de-
ing system ( (table № 5)
termined for all units of Mercedes-Benz O 405 buses, at
a range of 0 ÷ 1250 thousand km .
Table 4.
Engine Reliability
The
ce
ht,
Total
s
amount of
Name kt s and
er
s ,
it
un
Number
costs on Spare
ic
rt
if
costs per
No.
details s /
te
weig
ht%
un
of failures
parts to the elimi-
l bo
ra
ic
%
ec
bus ,
Detail number
pa
Numb
if
of
in
ta
per bus
nation of failures ,
Sp
o
ec
weig
thousand