Crown SP3020:
Slight bounce rasing or lowering

After raising up and down a while it will do a slight bounce when you raise or lower it. it has gotten worse over time.
  • Posted 4 Sep 2013 06:29
  • Discussion started by erik_j
  • California, United States
Showing items 1 - 6 of 6 results.
One source part number 103623-004 Accumulator charging tool (kit). You will have to get a gas cyl from a local gas supplier. Just follow instructions exactly when recharging. Its actually pretty easy.
  • Posted 17 Nov 2016 06:13
  • Reply by chevotaman
  • Texas, United States
It's all just nuts n' bolts.
Slowly open the plug on the accumulator, and be ready to screw it back in quickly. If you hear a hiss, it is probably OK, as it should have nitrogen in it. If oil comes out, replace it. The accumulator is bad. It needs to be charged by the dealer to either 350 PSI or 500 PSI of nitrogen.. I don't remember the spec for sure.
  • Posted 15 Dec 2013 14:01
  • Reply by Liftdoctor
  • Indiana, United States
MOST crown hydraulic cylinders have an air bleed screw towards the top of the cylinder crack it open and bleed any air that may be in the system.
  • Posted 5 Sep 2013 00:40
  • Reply by kevin_t
  • Pennsylvania, United States
a couple of questions come to mind about this issue...
- does it do this while the carriage or mast is moving or when you release the lever/handle to stop movement, (when movement is stopped the mast/carriage bounces) ???

- have you checked the mast and/or carriage to see if there is anything restricting movement, does it do this in one particular spot or at any position? are there any abnormal noises when this happens?

although it does sound like an accumulator issue i would rule out any other possible problem before replacing any parts.

generally when you get a bounce when movement is stopped (if thats what this is doing) it is due to air in the line(s) or in the accumulator.
If there is a bleeder screw on the hydraulic side try and bleed out the air, if no bleeder just crack the line with the forks slightly elevated and let it bleed out for a sec, if there is air it should come out then.
IF you do get air i would look for where it is getting the air from.

If i can think of anything else i'll come back and post it, but to me it just sounds like air in the system.
  • Posted 5 Sep 2013 00:27
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
I thought that also, should I replace it or have it recharged?
  • Posted 4 Sep 2013 14:43
  • Reply by erik_j
  • California, United States
Sounds like bad accumulator maybe
  • Posted 4 Sep 2013 11:21
  • Reply by ddrr
  • Alberta, Canada

Having trouble using the Discussion Forums? Contact us for help.

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Hangcha CQDB14AC1JNA
Flesherton, Ontario, Canada
New - Sale
UN Forklift FBR25NQC3
HANGZHOU, Zhejiang, China
New - Sale

Showcased in the Virtual Expo

Latest job alerts …
Louisville, Mississippi, United States
Columbus, OH, United States
Comfort, Texas, United States
Garland, TX, United States
Fact of the week
In a room of just 23 people, there is a 50/50 chance that at least two people have the same birthday. In a room of 75 people, there's a 99.9% chance of at least two people matching.
Latest job alerts …
Comfort, Texas, United States
Cincinnati, OH, United States
Garland, TX, United States
Statesville, United States
Taylor TT300
Coraopolis, Pennsylvania, United States
Used - Sale & Hire
Mobicon 2T
Coraopolis, Pennsylvania, United States
New - Sale
Movers & Shakers
Tom Panzarella Tom Panzarella
Chief Technology Officer, Seegrid
Member of the Board of Directors, Logistec
Asia Pacific President, Seko Logistics
Director of North America, GRI
Toyota 7FGCU45BCS
Flesherton, Ontario, Canada
Used - Sale
BT SWE120S
Sydney, New South Wales, Australia
Used - Sale
AUD5,000

Showcased in the Virtual Expo

Fact of the week
In a room of just 23 people, there is a 50/50 chance that at least two people have the same birthday. In a room of 75 people, there's a 99.9% chance of at least two people matching.