A person can make the pump easier to operate on a Crosman 760 air rifle by applying oil to the seals. This will provide lubrication and improve the overall action of the weapon.
Crosman did not make BB guns until 1947, so there is no 1924 model BB pistol. Crosman did make their first BB rifle called the 1923 model. It had a plunger under the barrel to pump up the gun. Benjamin had been using this design on their pistols starting in 1935 but crosman never used it on a pistol only on the first model. Now back to the Crosman rifles, the second Crosman rifle was the 1924 model and it used a pump handle under the barrel to pump up the gun. Yes I have a photo of a Crosman 1924 model but "Answers" has no way of displaying photos, so sorry your out of luck. FYI: Crosman is spelled with one "s" not two. CROSMAN
I can find no record of Crosman ever making a model 3101 but they did make a model 3100 from 1987-90 See the link below for the full list of old Crosman models
The seal on the pump plunger is bad. The seals need to be conditioned with oil, and or replaced.
The Crosman Bullseye Target model 105 is a pump pistol made between 1947-52
At least 2 times but NEVER more that 10 times, or you may damage the seals. Also you can find the owners manual on the crosman home page, see the related link.
Crosman offers a service to locate repair shops that repair older Crosman air rifles. See the link below
The 1924 was the second rifle model made by Crosman. It was the first Crosman underlever model made, before that it was the 1923 model that had a plunger pump under the barrel. Your model was made between 1923 -24 and in Good condition it is worth between $1,450 to $1,875. Source Blue book of airguns 10 edition
Yes you can replace the seals or worn parts. OR, Crosman air gun owns Benjamin. Crosman offers a free service to locate shops who repair old rifles. See the link below.
The Crosman Owners Manual states to NEVER pump the pistol more than 10 time and at least 2 times to fire a BB out of the barrel.
Not recommended. Crosman sell a special oil for air guns it cost around $6 it's called pellgun oil. airgun seals are different from automotive seals.
Crosman has all their Air gun manuals online see the link below and find your model. The list has both the Owners Manual and Parts Manual.