Open Engine Breather; Operation 9-6 To Clean And To Renew - Perkins New 1000 Series Workshop Manual

9
New 1000 Series

Open engine breather

Introduction
Open breathers fitted to New 1000 Series engines have a hose connected to the rocker cover which will allow
any crankcase pressure to pass directly from the engine. An oil separator is fitted to the rocker cover to remove
any oil mist and return it to the engine.
Early engines were fitted with an oil separator (A) that could be serviced by removing the top cover to renew
the steel gauze (A2).
Later engines are fitted with an oil separator that is not serviceable and must be renewed. The later oil
separator has a part number marked on the top of the cover.
Note: New oil separators supplied will all be of the later type.
Caution: Do not attempt to remove the cover of the later type of oil separator, this will damage the oil
separator.
To clean and to renew Operation 9-6
To clean (early type only)
Note: It is not necessary to remove the body of the oil separator from the rocker cover to obtain access to the
gauze.
1 Release the hose clip (B1) and remove the hose from the breather cover (A1). Release the breather cover
from the body of the breather (A4). The cover is a press fit onto the body.
2 Remove and discard the steel gauze (A2).
3 Clean the body of the oil separator with clean kerosene. Ensure that all of the kerosene is removed from the
oil separator after cleaning.
4 If necessary, renew the "O" ring seal (A3).
5 Check that the inside of the breather hose is clean. If the hose is not clean, release the hose clip and remove
the hose. Wash the hose with kerosene and dry it with low-pressure air.
6 Fit a new steel gauze.
7 Fit the cover to the breather body, ensure that it is securely fitted.
8 Fit the hose and tighten the hose clip (B1).
1
1
2
4
3
A
B
A1038
A1519/1
Workshop Manual, TPD 1350E, Issue 4 181
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