Injected Air Check Valve, Location/Task/Design/Function

Injected Air Check Valve, Location/Task/Design/Function

ENGINE 104.941 /942 /991 /992 /994 with CODE (494a) USA version
ENGINE 104.941 /942 /943 /944 /991 /994 as of 1.8.96
ENGINE 104.995
with CODE (494a) USA version
with CODE (807) Model year 1997
with CODE (808) Model year 1998
with CODE (498) as of Model Year 97 Japanese version
ENGINE 111.955 /956 /957 /958 /982 /983
ENGINE 111.961 with CODE (494a) USA version
ENGINE 111.974
with CODE (494a) USA version
with CODE (807) Model year 1997
with CODE (808) Model year 1998
ENGINE 111.973 /975
with CODE (494a) USA version
with CODE (923a) low emission D3
ENGINE 119.980 /981 /982 /985
with CODE (494a) USA version
with CODE (923a) low emission D3
with CODE (920a) with exhaust air pump (secondary air injection)
(TAW) (ROK) as of 12/96
ENGINE 120.982 /983




2 Moveable gasket
127/128 Check valve (injected air)
a From air pump (compressor)
A Check valve injected air in function
b To engine
B Check valve closed

Check valve injected air location
Between air pump/compressor and exhaust sideof engine.

Check valve injected air task
Reverse currents of exhaust to air pump/compressor (air injection).

Check valve injected air design
Metal housing with interior diaphragm

Check valve injected air function
The moveable gasket is opened by the injected air. Therefore the injected air can flow in direction of engine.