Tata bus: What is that long, tube-like thing on the dashboard?

HONESTabdul · 16th July 2018, 16:57

What is this thing? Situated beside dashboard, long tube like thing with a transparent ring.

condor · 16th July 2018, 17:10

That would be the indicator for the condition of the air-filter ( how clean it is - if it needs cleaning). Many vehicles have this mounted right on the air filter itself. The arrangement seen in this pic helps check the state of the air filter directly, without having to check in the engine bay / below the body where the filter is mounted.

wanderernomad · 16th July 2018, 17:17

It is indeed the Air Filter condition indicator, but over here in Haryana, it is used as a cup/tumbler holder by the drivers besides double duty as a sort of a hook to hang a small bag or two.

Rahul Rao · 17th July 2018, 13:15

The filter indicator has been in use for ages. I remember that my 1995 Tata Estate had one. These days cars dont have one.
One end of this is connected by a pipe to the manifold between air filter and turbo, at the other end there is a spring loaded red coloured metal cap. If filter is choked, the vacuume created by the Turbo pulls the cap inward, and is seen from the transparent part.

Rahul

16th July 2018, 16:57	#1
HONESTabdul BHPian Join Date: Feb 2011 Location: Durgapur Posts: 93 Thanked: 57 Times	Tata bus: What is that long, tube-like thing on the dashboard? What is this thing? Situated beside dashboard, long tube like thing with a transparent ring. Attached Thumbnails
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16th July 2018, 17:10	#2
condor Distinguished - BHPian Join Date: Jun 2006 Location: Speed-brkr City Posts: 16,068 Thanked: 16,422 Times View My Garage	re: Tata bus: What is that long, tube-like thing on the dashboard? That would be the indicator for the condition of the air-filter ( how clean it is - if it needs cleaning). Many vehicles have this mounted right on the air filter itself. The arrangement seen in this pic helps check the state of the air filter directly, without having to check in the engine bay / below the body where the filter is mounted.
	(1) Thanks

16th July 2018, 17:17	#3
wanderernomad Senior - BHPian Join Date: Jul 2007 Location: Chandigarh Posts: 2,536 Thanked: 1,279 Times View My Garage	re: Tata bus: What is that long, tube-like thing on the dashboard? It is indeed the Air Filter condition indicator, but over here in Haryana, it is used as a cup/tumbler holder by the drivers besides double duty as a sort of a hook to hang a small bag or two.
	(2) Thanks

17th July 2018, 13:15	#4
Rahul Rao Senior - BHPian Join Date: Dec 2013 Location: Pune Posts: 1,132 Thanked: 2,630 Times	Re: Tata bus: What is that long, tube-like thing on the dashboard? The filter indicator has been in use for ages. I remember that my 1995 Tata Estate had one. These days cars dont have one. One end of this is connected by a pipe to the manifold between air filter and turbo, at the other end there is a spring loaded red coloured metal cap. If filter is choked, the vacuume created by the Turbo pulls the cap inward, and is seen from the transparent part. Rahul
	(1) Thanks