Perkins 4GM - How to Renew the Engine Breather

Chapter 4 TPD1327E
Page 34
How to renew the engine breather
6TWGM and 4 cylinder engines (closed breather)
Caution: Do not use excessive force to remove the
hose (A4) from the breather outlet pipe.
1. Release the hose clip and carefully remove the
hose from the breather outlet.
2. Remove the rocker cover.
Caution: Ensure that the lever does not damage the
cover.
3. Release the fasteners and carefully remove
the breather cover from the breather body. A
suitable lever may be necessary to release the
cover from the body of the breather. Ensure that
the lever does not damage the cover. Discard the
joint (A5).
Caution: Do not clean the breather valve or the
gauze lter. The breather valve (A1) and the gauze
(A3) must be renewed in accordance with the
schedules on page 15.
4. Release the clips (A2) from the clip retainers
(A7) and push the breather valve out of the
breather cover. Discard the breather valve.
5. Remove and discard the gauze.
Warning! Do not allow compressed air to contact
your skin. If compressed air enters your skin, obtain
medical help immediately.
6. Wash the body of the breather, the cover, the
bafe plates (A6) and the breather pipe, every
2000 hours of operation. Use an approved
kerosene cleaning uid and dry them with
compressed air at low pressure.
7. Ensure that the holes at the bottom of the bafe
plates in the breather body are not restricted. If
necessary, clean the holes.
To assemble
1. Fit the bafe plates into the grooves in the
breather body.
2. Renew and t the gauze lter into the breather
body.
3. Renew and t the new valve into the breather
cover. Ensure that the clips are engaged
correctly.
Note: The breather valve is renewed every 4000
hours, refer to the schedule on page 15.
4. Renew the joint, which is tted dry. Put the cover
and valve assembly into position on the breather
body. Loosely t the fasteners. Tighten the
fasteners gradually and evenly to 3 Nm (2.2 lbf
ft) 0.3 kgf m.
Caution: Do not use excessive force to t the hose
to the breather outlet pipe.
5. Check that there is no restriction in the breather
pipe or the breather hose. Fit the breather hose
to the cover and tighten the clip.