Gen 2 & Gen 3 Benjamin hand pumps
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Topic: Gen 2 & Gen 3 Benjamin hand pumps (Read 1439 times))
45Bravo
Self confessed addict of anything with a trigger..
GTA Senior Contributor
Posts: 2953
3 people can keep a secret, if 2 of them are dead.
Real Name: Ian
Gen 2 & Gen 3 Benjamin hand pumps
«
on:
February 01, 2015, 02:09:45 AM »
I have seen a lot of post about the benjamin hand pumps (I own one too) but didn't know there were several generations.
So, a friend sent me his Benjamin hand pump to rebuild as it was leaking when pumping.
I noticed it was different than my current one.
This one has a collar around the bottom of the shaft, and the intake is on the shaft, not on the domed base as is the newer one.
A quick call to sun optics, Duane Sorensen says it’s a gen2 pump, and the newer one is a gen 3.
All the orings are the same.
The failure was not the normal #8 007 oring, it was the #11 116 oring.
It was cut because the main shaft had come loose and in wiggling while pumping it was damaged.
I just thought I would pass this info along.
Gen 2 base intake on shaft (the hose to the gun isn't shown, but attaches to the brass fitting on top right of the dome)
Gen 3 base with desiccant filter
«
Last Edit: February 01, 2015, 02:11:42 AM by 45Bravo
»
Logged
Houston, Tx.
I make 2 predictions;
ON THE DATE WHEN US TROOPS ARE ISSUED AN Energy Pulse Weapon,
1. The US Soldier will have on his person a version of the Colt 1911.
2. He will be aiming the NEW Weapon at someone carrying an AK47.
Canadianguy55
Plinker
Posts: 164
yes
Real Name: Greg
Re: Gen 2 & Gen 3 Benjamin hand pumps
«
Reply #1 on:
July 30, 2015, 06:12:38 PM »
Hi....got one of those Desiccant and was wondering do you leave that black rubber thing on the nipple?
Thanks
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Toronto
Benjamin Discovery .22
Discovery 2240 Pistol .22
Crosman DPMS SBR
KWC 1911 Tac
Leapers UTG BB 3x12x32
45Bravo
Self confessed addict of anything with a trigger..
GTA Senior Contributor
Posts: 2953
3 people can keep a secret, if 2 of them are dead.
Real Name: Ian
Re: Gen 2 & Gen 3 Benjamin hand pumps
«
Reply #2 on:
July 30, 2015, 07:57:41 PM »
No, just use it as a "dust cover"
I have forgotten mine on there, and pumped, but didn't notice much difference.
It might have taken more pumps to fill, but didn't notice if it did.
Logged
Houston, Tx.
I make 2 predictions;
ON THE DATE WHEN US TROOPS ARE ISSUED AN Energy Pulse Weapon,
1. The US Soldier will have on his person a version of the Colt 1911.
2. He will be aiming the NEW Weapon at someone carrying an AK47.
Canadianguy55
Plinker
Posts: 164
yes
Real Name: Greg
Re: Gen 2 & Gen 3 Benjamin hand pumps
«
Reply #3 on:
July 31, 2015, 11:31:38 AM »
Okay cool!
Logged
Toronto
Benjamin Discovery .22
Discovery 2240 Pistol .22
Crosman DPMS SBR
KWC 1911 Tac
Leapers UTG BB 3x12x32
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Gen 2 & Gen 3 Benjamin hand pumps