Perkins 403C-11, Workshop Manual, Page: 84 / 128

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74 Workshop Manual, TPD 1458E, issue 3 - Perkins Confidential: Green
400 Series
Closed circuit turbo charged - to clean and to renew Operation 9-2
To clean the engine breather assembly
The breather assembly should be renewed every 2000 hours.
Caution: Ensure that the components of the breather assembly are fitted in their correct position (1 - 7). If
they are incorrectly fitted, the engine may be damaged.
1 Release the four setscrews (2) and remove the breather cover (1), the spring (7), the diaphragm assembly
(4) and the adaptor (6).
Caution: It is important that the area around the vent hole (3) is clean.
2 Clean the breather cavity (5) in the rocker cover.
3 Clean the breather in clean diesel fuel.
4 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 (3) faces towards the flywheel.
Tighten the four setscrews.
Clean the breather only with a clean diesel fuel. If the breather is damaged or the diaphragm perforated, renew
the breather.
H1089
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