Perkins 35943, User Handbook Manual, Page: 32 / 50

Chapter 4 35943
Page 26
How to renew the engine breather assembly
Cautions:
• It is important that the area around the vent hole (A3) is kept clean and the vent hole is not restricted.
• Ensure that the pipe (A1) does not contact other components as this may cause the failure of the pipe.
• Ensure that the components of the breather assembly are fitted in their correct positions (A). If they are
fitted incorrectly, the engine can be damaged.
1. Remove the rocker cover.
2. Release the four setscrews (A2) and remove the breather cover (A7).
3. Remove the diaphragm and location ring assembly (A6). Remove the spring (A5).
4. Release the clips that retain the breather pipe and remove the breather pipe (A1).
5. Clean the breather cavity (A4) in the rocker cover, the passage through the rocker cover, the breather
pipe and the vent hole (A3). Ensure that they are not restricted.
6. Fit a new spring into the cavity in the rocker cover.
7. Fit a new location ring (B2) onto the new diaphragm (B1) and fit this assembly onto the spring. Ensure
that the location ring is on the spring (A5).
8. Fit the breather cover, fit and tighten the four setscrews.
9. Fit the breather pipe and tighten the clips.
10. Fit the rocker cover and tighten the cap nuts to 11 Nm (8 lbf ft) 1,1 kgf m.