Perkins 4006 User Handbook Manual page 36

MAINTENANCE PROCEDURES
CRANKCASE BREATHER ON EARLIER
ENGINES (HEAT EXCHANGER COOLED)
The crankcase breather is mounted on the
side of the thermostat housing Fig. 25 and is
connected to a breather body mounted on
the gearcase by a flexible extension pipe
Fig. 26.
Unscrew the breather by turning it anti-
clockwise, wash thoroughly using a suitable
cleaning agent, shake as dry as possible,
finally blow dry with compressed air then
screw the breather firmly back into position.
Key
(Fig. 26)
1. Position of breather when engine is fitted
with a radiator
2. Position of breather when engine is fitted
with heat exchanger
3. Flexible pipe
4. Elbow
Fig. 25
2
1
3
4
Fig. 26
32 4006/8 Diesel, May 1998