PCV Tube difference

[My12SecRanger]

Tried the search button but no luck, here is a pic of the difference between the PCV hoses on Earlie and later model rangers =
Small tube is 19-21 ranger # lb5z-6a664-b
Big tube is 21-23 ranger # lb5z-6a664-e

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[Friday yet?]

And this tube is for exactly what?

 

[My12SecRanger]

It is the tube that connects the intake vacuum port to the pcv valve, just wanted to show the difference between the early and later model design

 

[Jason B]

Is the bigger part of the big tube just a covering? Or is that the actual tube?
I would have to see how it is routed on the engine, but maybe the smaller tube had clearance issues and a potential for wearing thru. The big hose seems to be molded to avoid obstacles, and the sleeve over it to prevent wear.

 

[airline tech]

He is referencing the design change, that moved the vacuum intake port upstream to here.
Newer design - moved the Vacuum Port - Upstream
So, the need for a longer tube, feeds down to the Crankcase Vent Oil Seperator, pic below.

From Here:
The open end of the tube, connects to the Intake Port (blue connector)
Older Style (Design) had the port lower.

These Tubes - Feed the Crankcase Vent Oil Seperator - (PCV Valve Assembly)

New Design Routing

 

[My12SecRanger]

Yes, thank you airline tech

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