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13.5. Check of vacuum system

Vacuum tank
it is located in a back part of the left lobby of the steering grandma behind facing

PERFORMANCE ORDER
1) remove facing of the left lobby of the steering grandma
2) disconnect a vacuum hose from the vacuum tank
3) connect the vacuum pump to a vacuum hose
4) create in system pressure equal 300 Mbar (8.8 mm of a mercury column)
5) this value should not change more than for 10% in 2 minutes
6) if the system does not hold vacuum, check vacuum hoses and other components of system for existence of leaks in them if necessary make repairs