AR05.00-W-5541A | Disassemble, assemble rocker arm unit | 19.9.06 |
ENGINE 902.9 in MODEL 957 with CODE (MS8) Natural gas engine
ENGINE 904.904 in MODEL 670
ENGINE 904.908 /914 /923 /936 in MODEL 668, 670
ENGINE 904.9 in MODEL 374, 375, 673, 674, 676, 958, 970, 972, 975, 976
ENGINE 906.9 in MODEL 374, 958, 970, 972, 974, 975, 976
ENGINE 906.9 in MODEL 374, 375, 950, 952, 953, 954, 957, 958
W05.00-0014-09
1 Circlip
2 Rocker arm bracket (outside front)
3 Rocker arm bracket (inside)
4 Rocker arm bracket (outside rear)
5 Rocker arm (intake)
11 Remove washers
A Interval 122 mm
B Interval 110 mm
6 Rocker arm (exhaust)
7 Spring
8 Rocker arm shaft
9 Bolt
10 Clamping piece
| Disassemble | ||
1 | Remove rocker arm assembly | Engine 904.9 up to engine end no. 039739, Engine 906.9 up to engine end no. 041955 | |
Engine 904.9 from engine end no. 039740, Engine 906.9 as of engine end no. 041956 without code (MS8) natural gas engine | |||
Engine 902.9, 906.9 with code (MS8) natural gas engine | |||
2 | Remove circlips (1) | Pay attention to pretension of springs (7). | |
3 | Take rocker arm brackets (2, 3, 4), rocker arms (5, 6), washers (11) and springs (7) off rocker arm shaft (8) | Check parts of the rocker arm assembly for wear if necessary replace worn parts. | |
Rocker arm bearing bushing inside dia. | |||
Rocker arm shaft dia. | |||
| Assemble | ||
4 | Install circlip (1) at one side of the rocker arm shaft (8) | ||
5 | Mount rocker arm brackets (2, 3, 4), rocker arms (5, 6), washers (11) and springs (7) onto rocker arm shaft (8) | Set in position rocker arm brackets (2, 3, 4) with bolts (9) and clamps (10). Observe distance measurements (A and B). | |
6 | Mount second circlip (1) | ||
7 | Install rocker arm assembly | Engine 904.9 up to engine end no. 039739, Engine 906.9 up to engine end no. 041955 | |
Engine 904.9 from engine end no. 039740, Engine 906.9 as of engine end no. 041956 without code (MS8) natural gas engine | |||
Engine 902.9, 906.9 with code (MS8) natural gas engine |
Check values for valve timing