AR05.00-A-5521A | Remove/install rocker arm assembly | 19.7.06 |
ENGINE 457.939 /945 /946 /949 in MODEL NAB372.124
ENGINE 457.939 /945 in MODEL NAB372.317
A05.00-0001-11
1 Bolt
2 Rocker arm assembly
3 Valve bridge
L Shank length
| Removing | ||
1 | Open engine compartment flap | ||
2 | Remove engine compartment flap below last row of seats | ||
3 | Remove cylinder head cover | ||
4 | Unbolt rocker arm assembly (2) | Check rocker arms assembly (2) for wear, see: | |
Disassemble, assemble rocker arm unit | |||
Check shank length (L) of bolts (1) | |||
5 | Detach the valve bridges (3) | ||
6 | Set valve clearance | ||
| Install | ||
7 | Install valve bridges (3) | ||
8 | Mount rocker arm assembly (2) | Check whether push rods are seated properly in tappets Oil tappet rocket sockets with engine oil. | |
| |||
9 | Install cylinder head cover | ||
10 | Install engine compartment flap below last seat row | ||
11 | Close engine compartment flap |
Engine timing - general
Number | Designation | Engine 457.9 | ||
BA05.00-N-1001-01G | Bolt, rocker arm bracket to cylinder head | Stage 1 | Nm | 60 |
Stage 2 | ° | 90 | ||
Check values for valve timing
Referenced documents
- ap0530a0560a Set valve clearance
- ar0120a5014a Remove/install cylinder head cover
- ar0500a5541a Disassemble, assemble rocker arm unit