MANUALS · EMISSION CONTROL [17] · страница 32 из 46 · Открыть оригинал PDF ↗

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EGR Valve Inspection

(1)Remove the EGR valve and check it for sticking, deposit of
carbon, etc

If such condition exists, clean with adequate solvent to
ensure tight valve seat contact:

(2) Connecthand vacuum pump to the EGR valve

(3) Apply a vacuum of 500 mmHg (19.6 in Hg:) and check air
tightness_

(4)Blowinair fromonepassage oftheEGRtocheck
condition as follows_

Таблица в оригинале

Распознанный текст таблицы — требует сверки с оригиналом

Applying vacuum	Result
30 mmHg (1.2 in Hg:)	Air does not blow through
195 mmHg (7.7 in.Hg:)	Air blows through

INSTALLATION

(1) InstallnewgasketandEGRvalve,tightenboltsto
specified torque

Specified tightening torque: 22 Nm (2.2 kgm, 16 ft Ibs )

Thermo Valve Inspection

(1) Disconnect the vacuum hoses from the thermo valve, and
connecthand vacuum pump to nipple of the thermo
valve
(2) Applyvacuum and check the air passage through the
thermo valve

Таблица в оригинале

Распознанный текст таблицы — требует сверки с оригиналом

Engine coolant temperature	Result
50C (122PF) or less	Vacuum leaks_
80PC (176'F) or more	Vacuum is maintained_

REMOVAL

(1) When removing the thermo valve, do not use wrenches or
other toolson the resinpart:

(2)When disconnecting the vacuum hose, put a mark on the
hose so that it may be reconnected at original position;

INSTALLATION

(1) Apply specified sealant to the threads of thermo valve and
tighten to the specified torque. When installing the thermo
valve,do not use wrenchesor other tools on the resin
part.

Specified sealant:

3M NUT Locking No. 4171 or equivalent
Specified torque: 30 Nm (3.0 kgm, 22 ft Ibs:)

(2) Reconnect the vacuum,hose asit was before.

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