1000 series » How to clean the closed breather system

Warning! Do not direct compressed air at your skin, if compressed air enters your skin obtain medical help immediately

Note: The procedure below refers only to the closed breather shown in (A) and (B).

1. Release the hose clips and remove the breather valve (A2).
2. Release the short setscrew (A3) and the long setscrew (A5) and remove the oil separator (A4).
3. Wash the oil separator with approved cleaning fluid and dry it with low pressure air.

Caution: Do not put the breather valve completely into the cleaning fluid.

4. The breather valve does not normally need to be cleaned. If the inside of the breather valve is to be cleaned, insert a safe approved cleaning fluid into the valve through the pipe at the bottom. Drain the fluid from the breather valve. Dry the breather valve with low pressure air.
5. Check that the inside of the upper pipe (A1) is clean. If the pipe is not clean, release the flange setscrews (A6) and remove the pipe. Wash the pipe with kerosene and dry it with low pressure air.
6. Ensure that the contact faces of the upper pipe flange and the induction manifold are clean.
7. Fit the upper pipe complete with a new joint and tighten the flange setscrews.
8. Renew the "O" ring (B1) at the bottom of the oil separator. Clean the bore in the cylinder block for the "O" ring of the oil separator. Lightly lubricate the "O" ring and fit the oil separator to the cylinder block. Fit the setscrews for the oil separator in their correct positions and tighten them.
9. Fit the breather valve and tighten the hose clips.