Serie
it
ar0530b3831a
Replace valve seat rings
Tipo ar · tema 05.30 · versione 0302 · 2020-02-08
Valido per: Engine 904.9, 906.9, 924.9, 926.9 (except 926.942) in model 368.0/1, 382.1 (except 382.176), 384.06/07, 634.0, 979.2
Non disponibile in “it”; mostrato in Inglese.
Collocazione
Gruppo funzionale 1 Motore › 05 Comando motore › 05.30 Valvole — Serie 368 (modelli 0**, 1**) · Serie 382 (modelli 111, 123, 134, 135, 143, 153, 154, 155, 156, 157, 158, 171, 175, 177, 178, 180, 181, 182, 184, 185, 186, 187, 188, 189, 190) · Serie 384 (modelli 06*, 07*) · Serie 634 (modelli 0**) · Serie 904 (modelli 9**) · Serie 906 (modelli 9**) · Serie 979 (modelli 2**)
EinPAS 15 Motore › 15.17 Distribuzione del motore › 15.17.30 Organi della distribuzione — Serie 368 (modelli 0**, 1**) · Serie 382 (modelli 111, 123, 134, 135, 143, 153, 154, 155, 156, 157, 158, 171, 175, 177, 178, 180, 181, 182, 184, 185, 186, 187, 188, 189, 190) · Serie 384 (modelli 06*, 07*) · Serie 634 (modelli 0**) · Serie 904 (modelli 9**) · Serie 906 (modelli 9**) · Serie 979 (modelli 2**)
Valido anche per motori/cambi: 924 9**, 926 900, 926 910, 926 911, 926 912, 926 913, 926 914, 926 915, 926 916, 926 917, 926 918, 926 919, 926 920, 926 921, 926 924, 926 925, 926 926, 926 927, 926 928, 926 929, 926 930, 926 932, 926 933, 926 934, 926 935, 926 937, 926 938, 926 941, 926 945, 926 946, 926 947, 926 948, 926 949, 926 950, 926 956, 926 959, 926 960, 926 961, 926 969, 926 970, 926 971, 926 972, 926 973, 926 974, 926 975, 926 976, 926 985, 926 986, 926 987, 926 988, 926 989, 926 990, 926 991, 926 992, 926 993, 926 994, 926 995, 926 996, 926 997, 926 998, 926 999
AR05.30-B-3831A
Replace valve seat rings
07.02.2020
Engine
904.9, 906.9, 924.9, 926.9 (except 926.942) in model 368.0/1, 382.1 (except 382.176), 384.06/07, 634.0, 979.2
1
Intake valve seat
2
Exhaust valve seat
3
Cylinder head
4
Mandrel
A
Outside diameter of the seat
B
Diameter of the seat housing on the head
C
Depth of the seat housing on the head
D
Valve seat height
Remove
1
Remove the valves
AR05.30-B-3511A
2
Check the valve guide wear
AR05.30-B-3731B
.Valve guide inside diameter (final finish)
*BE05.30-B-1003-02B
Drift
*102589002300
If the side with the largest diameter "+" of the gauge enters the guide, measure the diameter at the center of the length thereof (wear limit).
Replace if necessary.
3
Remove the valve seat (1/2) from the cylinder head
AR05.30-B-3831-01A
The seat can also be removed by machining it up to a 0.5 mm thickness, removing it then with an appropriate chisel.
Puller, 28-37 mm dia.
*000589283300
Internal extractor
*000589293300
Counter stay
*000589343300
4
Check the condition and dimensions of the seat housing in the head (3)
The interference between the seat (diameter A) and housing (diameter B) should be unconditionally obtained.
.Diameter (B) of the intake valve case housing in the head
*BE05.30-B-1003-03C
.Diameter (B) of the exhaust valve case housing in the head
*BE05.30-B-1004-03C
.Cylinder head basic bore depth (C) for valve seat insert
*BE05.30-B-1008-03C
.Interference between the valve case and the housing in the head
*BE05.30-B-1005-03C
Dial gage
*001589532100
Use
Internal diameter gauge (sudden) from 35 to 60 mm.
5
If necessary, rework the valve seat lodging in the head
AR05.30-B-3831-02A
.Diameter (B) of the intake valve case housing in the head
*BE05.30-B-1003-03C
.Diameter (B) of the exhaust valve case housing in the head
*BE05.30-B-1004-03C
.Cylinder head basic bore depth (C) for valve seat insert
*BE05.30-B-1008-03C
Dial gage
*001589532100
Use
Internal diameter gauge (sudden) from 35 to 60 mm.
Install
6
Select a new valve seat (1/2) for installation
To obtain the recommended interference, the seat repair level should match the level for the housing.
.Interference between the valve case and the housing in the head
*BE05.30-B-1005-03C
.External diameter (A) of the intake valve case
*BE05.30-B-1001-03C
.External diameter (A) of the exhaust valve case
*BE05.30-B-1002-03C
.Valve seat height (D).
*BE05.30-B-1006-03C
Use
External micrometer, from 0 to 25 mm
External micrometer, from 25 to 50 mm
Warning
Risk of injury when handling liquid nitrogen or from touching extremely cool objects. Risk of asphyxiation from inhaling nitrogen gas.
Wear heat protective gloves, protective clothing and full eye protection. Ensure that the work area is adequately ventilated.
AS00.00-Z-0003-01A
7
Put the seat (1/2) in the cooler box with liquid nitrogen
Cool the seats for 20 to 30 minutes.
Supercooler box
*346589006300
8
Heat the head (1) in water bath
Approximate temperature 80 °C.
9
With nose pliers, remove the seat (1/2) from the cooling box and put it in the lodging with the heated head
The housing for the valve seats on the head should be clean and dry.
10
Install the seat (1/2) in the head (3) with the mandrel (4)
Quickly install the cooled seat on the heated head.
Drift punch
*346589031500
11
Machine the valve seat (1/2)
AR05.30-B-4511A
12
Install the valves
AR05.30-B-3511A
.
AR05.30-B-4202C
Utilize new valves, or
Rework the valve to be reused.
Test values for the valves cases
Number
Designation
Engine 904.9, 906.9
Engine 924.9, 926.9
BE05.30-B-1001-03C
External diameter (A) of the intake valve case
Normal
mm
35,070...35,080
35,070...35,080
Repair I
mm
35,370...35,380
35,370...35,380
repair II
mm
35,570...35,580
35,570...35,580
Test values for the valves cases
Number
Designation
Engine 904.9, 906.9
Engine 924.9, 926.9
BE05.30-B-1002-03C
External diameter (A) of the exhaust valve case
Normal
mm
40,070...40,080
40,070...40,080
Repair I
mm
40,370...40,380
40,370...40,380
repair II
mm
40,570...40,580
40,570...40,580
Valves guide check values
Number
Designation
Engine 904.9## ## up to 415751
Engine 904.9## ## as of 415752 Engine 906.9
BE05.30-B-1003-02B
Valve guide inside diameter (final finish)
standard
mm
8,000...8,022
8,000...8,022
wear limit
mm
8,050
8,050
Valves guide check values
Number
Designation
Engine 924.9 Engine 926.9
BE05.30-B-1003-02B
Valve guide inside diameter (final finish)
standard
mm
8,000...8,022
wear limit
mm
8,050
Test values for the valves cases
Number
Designation
Engine 904.9, 906.9
Engine 924.9, 926.9
BE05.30-B-1003-03C
Diameter (B) of the intake valve case housing in the head
Normal
mm
35,000...35,025
35,000...35,025
Repair I
mm
35,300...35,325
35,300...35,325
repair II
mm
35,500...35,525
35,500...35,525
Test values for the valves cases
Number
Designation
Engine 904.9, 906.9
Engine 924.9, 926.9
BE05.30-B-1004-03C
Diameter (B) of the exhaust valve case housing in the head
Normal
mm
40,000...40,025
40,000...40,025
Repair I
mm
40,300...40,325
40,300...40,325
repair II
mm
40,500...40,525
40,500...40,525
Test values for the valves cases
Number
Designation
Engine 904.9, 906.9
Engine 924.9, 926.9
BE05.30-B-1005-03C
Interference between the valve case and the housing in the head
Intake
mm
0,045...0,080
0,045...0,080
Exhaust
mm
0,045...0,080
0,045...0,080
Test values for the valves cases
Number
Designation
Engine 904.9, 906.9
Engine 924.9, 926.9
BE05.30-B-1006-03C
Valve seat height (D).
Intake
mm
7,6...7,7
7,6...7,7
Exhaust tube - 45 degree angle
mm
8,0...8,1
8,0...8,1
exhaust tube - 36 degree angle
mm
7,93...8,03
7,93...8,03
Test values for the valves cases
Number
Designation
Engine 904.9, 906.9
Engine 924.9, 926.9
BE05.30-B-1008-03C
Cylinder head basic bore depth (C) for valve seat insert
Intake
mm
11,4...11,6
11,4...11,6
Exhaust
mm
11,4...11,6
11,4...11,6
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