Shindaiwa DGK150DU Owner's Manual page 50

(12) Bleeding air from EGR cooler
Bleeding air Every after coolant change
Loosen the air release plug of the EGR cooler in order to bleed air from within
1
the EGR and improve cooling performance.
2 When coolant flows out from the air release plug, tighten the air release plug.
Air bleeder plug tightening torque: 19.0 to 25.0 Nm ( 1.9 to 2.5 kgfm
/ 14.0 to 18.4 lbf･ft. )
Air Bleeder Plug
47