N39453 Chapter 4
Page 57
How to renew the engine breather assembly
The breather assembly should be renewed every 2000 hours.
Caution: Ensure that the components of the breather assembly are tted in their correct position (R1 - R6). If
they are incorrectly tted, the engine may be damaged.
1. 422TGM only - Undo the clip (R1) and detach the hose (R2).
2. Release the four setscrews (R4) and remove the breather cover (R3), the spring (R8) and the diaphragm
assembly (R6).
Caution: It is important that the area around the vent hole (R3) is clean.
3. Clean the breather cavity (R7) in the rocker cover.
4. Clean the breather in clean diesel fuel.
5. Fit the breather assembly into the cavity in the rocker cover, ensuring that the breather cover, diaphragm
and spring are assembled correctly and that the vent hole (R5) faces towards the ywheel.
6. Tighten the four setscrews.
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