OCTOBER 19-20, 2012 - YMCA University of Science & Technology

Proceedings of the National Conference on
Trends and Advances in Mechanical Engineering,
YMCA University of Science & Technology, Faridabad, Haryana, Oct 19-20, 2012
Leveling: In this process the vacuum of 2.4x10 2 pa is created inside the drain salvage tank by the vacuum pump
for 10 seconds it removes the excess brake fluid from the reservoir and send it to drain salvage tank.
Blow: After leveling process, the gun has to be unclamped from reservoir. It is not easy to unclamp the gun as it
causes damage to reservoir due to vacuum pressure, for this purpose vacuum pressure has to be removed. The
pressure regulator valve supply the pressure of 2 bar within 10 seconds to overcome vacuum pressure.
1.4 Types Of Error In Brake Fluid Filling Equipment
Types of Error in brake fluid filling equipment are given in the Table 1. Out of these errors only the Vacuum and
Pre-vacuum error causes low or no brake fluid filling condition. Only these errors are considered for further
investigation and analysis.
Table 1 Types of Error in Brake Fluid Filling Equipment
Types of
defects
Contribution
of error in
percentage
Machine Condition
Vacuum error 47.06% Low brake fluid filled
Pre Vacuum
error
19.85% No brake fluid filled
Other 14.71%
ABS fault &
ABS actuator
error
10.29%
Filling fault 8.09%
Not concern about
brake fluid
Not concern about
brake fluid
No brake fluid filled or
Low brake fluid filled
2. Identification of Causes and Developing Counter Measures for Brake Spongy
Detail investigative study was carried out to identify the causes of brake spongy, these causes were clasified
under four categories such as Man, Machine, Materials and Methods. Fig.6 gives details of all possible causes
identified under different categories responsible for brake spongy defect.
Fig. 5 Brake Fluid Filling Equipment
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