Crushed hydraulic pump input line impacts : Kubota Review  -- Kubota Tractors Discussion Forum and Review Crushed hydraulic pump input line impacts : Kubota Review -- Kubota Tractors Discussion Forum

  parts   |   manuals   |   discussion   |   photos   |   podcast   |   reviews   |   specs   |   dealers   |   classifieds   |   contact   |   faq   |   myProfile   |   home          Login Now | Sign Up


FAQ:   What is a tractor?

Forum Index

Kubota Tractors
  Kubota News
  Kubota Price
  Kubota Review
John Deere Tractors
  John Deere News
  John Deere Price
  John Deere Review
New Holland Tractors
  New Holland Tractor Price
  New Holland Tractor Revie
Other Tractor Brands
  Articulated Tractors
  Belarus
  Bobcat Tractors
  Case
  Cub Cadet
  Hinomoto
  Kioti Tractor
  Long
  Massey Ferguson
  Mitsubishi
  Other Tractor Brands
  Other Tractor News
  Shibaura
  Yanmar Tractors
Lawn and Garden Tractors
  Craftsman
  Cub Cadet Garden
  John Deere Garden
  Kubota Lawn Garden
  Other Garden Tractors
  Simplicity
  Toro Wheelhorse
  Ventrac Lawn Tractors
Antique Tractors
  Allis Chalmers
  Case David Brown
  Farmall IHC
  Ford
  Ford 9N 2N 8N
  Fordson
  Harry Ferguson
  John Deere Older
  Massey-Harris Ferguson
  Minneapolis Moline
  Oliver Cletrac Cockshutt
  Restoration
  Tractor Pulling
Tractor Attachments Implements 3ph
  Back Hoe
  Field Mowers Brush Cutter
  Grooming Mowers Finish Mo
  Loaders
  Snowblowers / Snow Plows
  Tillers and Ploughs
  Tractor Implements
  Trenchers
  Wood Chippers 3PH
Tractor Maintenance
  Diesel Fuel Lubrication E
  Tractor Engine Repair Reb
  Tractor Tires
Utility ATV
  All Terrain Vehicles
  John Deere Gator
  Mule Utility Vehicles
General Tractor
  Farming Ranching Agricult
  Photo Contest
  Size Tractor Needed
  Tractor Projects
  Tractor Safety
  Welding
Chinese Tractors
  Jinma Farmpro Agracat
  NorTrac Tractors
  Other Chinese Tractors
Cars
  All Brands
  Audi VW
  BMW
  Car Tires and Maintenance
  Chrysler
  Exotic, Sports, Racing
  Ford Cars
  General Motors
  Honda
  Hyundai
  Mercedes
  News
  Nissan
  Subaru
  SUV and Trucks
  Toyota Cars
Trucks Trailers
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
Home Building
  Alternate Electric Energy
  Barns Pole Barns
  Buying Ranch Farm Acreage
  Carpentry
  Contractors
  Electric
  Excavation
  Moldings Finish Trim
  Other Home Building
  Pellet Stoves
  Plumbing
  Wood Stoves
Tools
  Electirc Power Tools
  Gas Power Tools
  Generators
  Shop Tools
  Techniques Howto
Landscape
  Flowers Shrubs Garden
  Golf Course Maintenance
  Irrigation Systems
  Landscape Design
  Landscape Lighting
  Landscape Maintenance
  Lawn, Turf, and Grass
  Vegetable Gardening
Construction
  Caterpillar
  Komatsu
  Wheel Loaders
Current Events Health Happiness
  Current Events
  Dogs and other Pets
  Electronics And Computers
  Food
  Health
  Just For Fun Off Topic
  Movies Music Games
  Personal Finance Investme
  Sports Outdoors
Tractorpoint Site
  Member Photos
  Site Members
  Website Operations Howto


New As Posted | Active Subjects



Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 03-24-2003, 18:58 Post: 51770
Mike In Ont
2003-03-24 18:58:33
Post: 51770
 Crushed hydraulic pump input line impacts

My B20 has a crushed hydraulic line just before the front mounted pump inlet. It appears that it would be restricting flow by about 50%. What impacts would this be having on either the Loader, Backhoe or drive hst ???

Thanks!!

Mike in Ont






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 03-25-2003, 00:38 Post: 51799
jeff r



View my Photos

View my Photos  Pics
Join Date: Jul 2003
Location: burton. michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 428
 Crushed hydraulic pump input line impacts

LITTLE or REDUCED FLOW EQUALS SLOW OPERATION. FIX IT QUICK BEFORE SOMETHING BAD HAPPENS.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 03-25-2003, 05:51 Post: 51803
hardwood

TP Contributor

Join Date: Dec 2002
Location: iowa
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3582
 Crushed hydraulic pump input line impacts

Stop, fix it now, or you'll probably buy a pump too from cavitation, pumps without enough oil don;'t last long.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 03-25-2003, 07:38 Post: 51810
TomG

TP Contributor

Join Date: Feb 2002
Location: Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 5406

2
Filter by User
 Crushed hydraulic pump input line impacts

It certainly should be fixed. Some typical symptoms that damage is being done is if there is a buzzing or rattling sound from the pump, the oil gets hot or it becomes foamy. If none of things are apparent the restriction may not be enough to cavitate oil in the pump and the tractor may be OK for limited light duty use before repairs, but no guarantees that use won't do some damage.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 03-25-2003, 08:13 Post: 51815
Peters

TP Contributor

View my Photos

View my Photos  Pics
Join Date: Feb 2002
Location: Northern AL
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3034
 Crushed hydraulic pump input line impacts

I guess this is why it is important to determine if any cavitation is occuring.
In a closed system cavitation means that the hydraulic oil must vaporize into small bubbles. As soon as the vacuum on the oil decreases, in the pump the bubbles collapse. The small bubble, as the vapor pressure of the oil is high, needs a lot of heat to form. It extracts it from the surrounding oil. As the bubble collapses the heat is returned in a small pulse of heat and pressure.
This pits the surfaces in the pump and can quickly do considerable damage. The process is similar to what happens in a sonic bath, like those used to clean jewelry. Note that they never want to leave your rings in it any longer than necessary.
I worked on sono chemistry for a time.
This is a lot different than entrained air in the system.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 03-26-2003, 05:27 Post: 51885
TomG

TP Contributor

Join Date: Feb 2002
Location: Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 5406

2
Filter by User
 Crushed hydraulic pump input line impacts

The notion of bubbles eroding steel always mystified me. Never the less I have a picture of the results of pump cavitation that shows a dished out area on the cavity wall almost a quarter of its width. I've also heard that coolant cavitation in some diesels is sufficient to cause perforations in water jackets. Again pressure differential is the cause. High-energy sound waves made by the engines create high and low pressure zones. Coolant that is already near its boiling point boils in areas low pressure. For this reason it's good to change coolant every two years. Engines that are highly prone to coolant cavitation often use an additive that reduces cavitation.

The idea of a cavitating pump as kind of a heat pump that transfers energy from one place to another never occurred to me. Thanks for the comment.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 03-26-2003, 06:09 Post: 51888
Art White



View my Photos

View my Photos  Pics
Join Date: Jan 2000
Location: Waterville New York
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 6844
 Crushed hydraulic pump input line impacts

Seems the replacement of the line is needed asap. Good work boys!!!!






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 03-27-2003, 15:26 Post: 51996
mike in ont
2003-03-27 00:00:00
Post: 51996
 Crushed hydraulic pump input line impacts

Thanks all!!! Time to order the part!!

Mike In Ont!






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

Thread 51770 Filter by Poster:
Art White 1 | hardwood 1 | jeff r 1 | Mike In Ont 2 | Peters 1 | TomG 2 |

 (advanced search)

Picture of the Day
bobhope

Lawn, Turf, and Grass - The Plus and Minus of Ignoring Your Lawn
The Plus and Minus of Ignoring Your Lawn


Unanswered Questions

Belarus 825 - needs a new clut
Drain Cock
Need more hydraulic flow for s
HINOMOTO HB 501
Belarus 420A - Problems bleed

Active Subjects

460 Long hyd leak
460 axle
Key will not start engine
6x4 engine rebuild vsHarbor Fr
Things we say and what do they
The Plus and Minus of Ignoring
Looking to buy a New Pickup Tr
Need more hydraulic flow for s


Hot Topics

Tractor Category 1 2 3 Hitch s
Duerr hp 678 Chipper replaceme
Gator 620i gas in engine oil
KUBOTA Tractor Trouble Free Qu
Gator 6x4 Overheating problem
Duerr hp 678 Chipper Manual
Adjusting 7308 Pressure Relief
Long 460 hydraulic problem


Featured Suppliers

Mountain Creek Labradoodles
      MountainCreekLabradoodles.com





New Forums on Gun Sport Shooting and Hunting -- BarrelPoint.com  New Forums on Horses ManePoint.com
Talk Horses at ManePoint
Hunting + Gun Sports at BarrelPoint



Most Viewed

+ Kubota AT70s Rear Tine Tiller
+ Kubota HST GST Shuttle or Gear Transmission
+ Best Boom Mower for Kubota B2710 Tractor
+ Definition of Tractor Loader Breakout force
+ Kubota B3200 vs JD 2720
+ New Kubota L3240 First Look Review
+ Kubota Transmission Fluid SUDT
+ Kubota BX2230 VS kIOTI CK20HST
+ KUBOTA Tractor Trouble Free Quality
+ kubota bx25 vs john deere 2720

Most Discussion

+ How to match Truck to Trailer
+ New Kubota L3240 First Look Re
+ Kubota Number 1 in Compact Tra
+ KUBOTA Tractor Trouble Free Qu
+ Source for after market produc
+ 3-Point Quick Hitch
+ B 7100 ST - Making the Leap
+ Kubota Transmission Fluid SUDT
+ Kubota vs John Deere Compact T
+ L3130HST vs JD4310Hydro HELP

Newest Topics

+ Kubota B2301 vs Deere 2025R vs Mahindra Max24
+ 5040 shear on my PTO shaft
+ Kubota B7100 HST Flipped Will Not Move
+ Kubota b7100-hst
+ B2601 vs bx1800
+ 2000 B2710 I need a loader dealer wants over 4K an
+ Upgrading the Factory 145amp Alternator to 40 Amp
+ Kubota BX2750 Snowblower Fan Shear Pin Alignment
+ Size Kubota for Homeowner Use
+ I need some OEM Quality decals for a B7500 DT-TLB
















Turbochargers for Tractors and Industrial Machines
Cab Glass for Tractors and Industrial Machines

Alternators for Tractors and Industrial Machines
Radiators for Tractors and Industrial Machines

Driveline Components for Tractors and Industrial Machines
Starter Motors for Tractors and Industrial Machines