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99

ENGINE2.2LDICOR

Vaccum management system consists of following

components :

Vaccum pump

Vaccumaccumulator

Electronics vaccum regulating valve (EVRV)

Vaccum tank

Non-return valve (NRV)

Vaccumaccumulator

(Fig.208)

The vaccum is generated by the camshaft driven

vaccum pump. The vaccum cicuit for the brake and

Engine is separated by the in-line Non return valve

(NRV)

In between NRV and Vaccumaccumulator, there is a T

connector which further connectsEVRVVNTandEVRV

EGR.

The NRV are vaccum accumulator helps in vehicle

performance viz acceleration through gears after

repeated brake stops.

With this system there is no vaccum starvation by VNT

andEGR irrespetive of braking application. TheVaccum

accumulator is mounted on fire wall with the help of a

bracket. (Fig.209)

Vaccumpump

(Fig.210)

vaccumpump supplies vaccum to Brake booster, VNT

and EGR systems. This unit is driven by the exhaust

camshaft.

For removal and fitment procedure please refer engine

over haul section of thismanual.

VaccumTank

For details please refer brakes section of this manual.

EVRV

For details please refer EGR section of this manual.

NRV

(Fig. 211)

This is provided to safeguard the vaccummanagement

system. while assembling NRV the arrowmark should

point towards vaccum pump.

Fig. 208

Fig. 209

Fig. 210

Fig. 211