how do i remove the air chamber on a sheridan blue streak
Next time don't place any part of your question in this box. Or the systems thinks your question has been answered. This is the Answer Box not the Question box.
To answer your question (see the link below) for the parts diagram.
Today Crosman air gun company owns Sheridan and Benjamin line of air guns.
The Sheridan Silver streak air rifle was made from 1949 up to the 1990's after that it became the Blue Streak.
The Blue Streak went into production in 1995 and is still produced.
I've looked at every reference book I have and can not find a model Sheridan 63-90 Blue Streak. The Blue Streak, As far as I know, is CB9 not 63-90. On the CB9 the serial number is usually on the left side of the barrel just forward of the loading chamber. You may have to move the black rubber piece of plastic clip that covers the barrel.
It was made in 1975
There are 3 versions of the Sheridan Blue Streak. See the link below for the 2nd version. BTW today Crosman owns the Sheridan and Benjamin line of air guns. This link is from Crosman
Here is the link to all of the manuals for Sheridan and Benjamin. Crosman owns Sheridan and Benjamin See the link below.
On the right side in front of the trigger
The Blue Streak has been in production from 1995 to present. If you want more Information I suggest you contact Crosman who owns both Benjamin and Sheridan. See the link below.
today. Crosman corp owns both Sheridan and Benjamin air guns / rifles. See the links below.
It would be worth between $65 - $80
It was made in 1975. (Today Crosman owns Sheridan.) See the link below and then scroll down to "Sheridan"
It all depends on age, use, and condition of the rifle. Is it in Poor, Fair, Good, Very good or Excellent condition. Sheridan made 4 different model C series. The C Silver Streak, C9 Silver Streak, CB9 Blue Streak, and C9BP. Which one are you asking about?