Question about Cars & Trucks

Open Question

Mini excavator bobcat 430

Boom and arm dose not move when joystick is first moved and after about 15 seconds starts to move slow. The other hydraulics work ok.

Posted by Anonymous on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: After 15-20 minutes of driving

i had same problem and its just oil pressure sending unit its above oil filter just check it if you got some loose wire or somthing problem was ;i had oil in conector i clean it and works jyst fine

Posted on Nov 30, 2008

  • 373 Answers

SOURCE: wiper arms dont move

there are little teeth on the connection if they are worn then you need to find out hoe to replce them

Posted on Feb 03, 2009

  • 1 Answer

SOURCE: Mss-SR Mitsubishi excavator moves and lifts lowers

I think I can help you with it. Last year I had similar situation with my MM55-SR flashing red CPU light. The arm stopped moving, but the blade was working and I could drive as well.
I inspected all position sensors in the arm - each joint should have one. They look like small cylinders bolted to the joints of the arm with 3 wires coming out. In my case I had problem with the first sensor located by main (boom) piston where it is attached to the body of the machine. I removed this sensor from the arm with its wire. One wire was broke very close to the sensor housing. I was able to solder it and it solved my problem. Sometimes those wires can touch to the metal arm and rub off insulation causing electric shortage which also may stop the arm from moving. Check all connectors and wires for each position sensor first.
Hopefully this will help solving your problem.
If you want to share your experience you can email me at

Posted on Aug 20, 2009

  • 31 Answers

SOURCE: control levers some wilnot move komatsu pc50uu-1excavator

pressure reliefe valve is malfunctioning as this can be one to several you need special hydraulic meters to know (best bet take it to the dealer) I know that stinks but as they become more complicated so does the repair process
If I helped at all please give me a response negative or positive ( i can handle it ,thanks )

Posted on Dec 30, 2009

  • 4 Answers

SOURCE: 330 excavator with a c9 cat engine, heavy SMOKE

At the time you made all the above repairs, did you replace the "throw away" turbo charger? The turbo charger commonly sucks oil, and it is not repairable.

Run it without the inner & outer air cleaner. If it isn't the turbo, run the injector cut out test. If the injectors are ok, then you need to replace the injection system hydraulic pump, which is also unrepairable.

Posted on Apr 23, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a mini excavator bobcat 328 that does not want to lift. everything else works it rotates, bucket works, moves forward and backwards

Don't waste your money on unnecessary sources
and unwanted repairs. Get this manual online at and get complete guide on whether to repair or not, service it, and how to repair etc

Mar 13, 2018 | Mini Cars & Trucks

1 Answer

Yanmar b15 excavator Boom and arm will not operate. everything else works fine. HELP.

Is there an interlock on the boom that wont allow it to operate if the front blade is not set? There could be an issue with hydraulic fluid, pump or PTO.

Feb 08, 2017 | Cars & Trucks

2 Answers

How to remove front idler on bobcat 331 mini excavator

Bobcat 331 Mini Excavator, Front Idler Assembly
Loader Parts Source, Inc. offers this Front Idler Assembly for Rubber Tracks (W/ Holes in idler) for replacement on the Bobcat 331 Mini Excavator. Serial Number ...
Bobcat Idler: Construction Equip Parts ' 325, 328, 331, and 334 Front Idler - Undercarriage, Mini Excavator, ... BobcatT140 T180 T190 T200 T250 T300 T320 T650 T630 T750 864 Front Idler ...Undercarriage Parts Can Help You:Eliminate Unwanted Machine Downtime.Front/Rear Idlers - Mini Excavator front and rear idlers are available for Bobcat track loader and mini excavators, Kubota miini excavators, and ... Aftermarket Bobcat® Front Idler - Bobcat CTL ... Aftermarket Idler - Bobcat 325 328 331 334 430 335.

Dec 25, 2015 | Mini Cars & Trucks

1 Answer

I changed the hydraulic gear pump on my bobcat and had an AHC code light up. Before finishing my repair I started the machine and checked for hydraulic fluid leaks by letting it idle for a few minutes

Disconnect the battery for 30 minutes. On cars , this resets the computers. Back to factory specs. Worth a shot. If the sensor worked before, most likely it is good.

Jan 22, 2015 | Cars & Trucks

1 Answer

What causes a mini excavator (Yanmar B27) on rubber tracks to shudder and shake ( bunny hops) when first moving forward or reverse? Would worn track rollers produce this effect? Thx

probably not--This sounds like uneven pressure from the hydraulic pump or problems with the drive motors. Check that the hydraulic oil filter is in good condition (not blocked) and have the pressure in the hydraulics checked.. Have the hydraulic controls checked for correct operation. (if electric controls check for voltage problems to the solenoids and if manual check for control valve problems)

Oct 05, 2014 | Cars & Trucks

1 Answer

My excavator hitachi ex200-1 weak swing and when you swing then stop vibration begin on turn table when i stop to swing,and when i swing and lift cylinder raise,vibration on the turn table will contin

Not sure would need to have a good look ,but i suspect a safety valve isnt closing properly causing thumping within the hydraulic system which is the vibration you can feel,shouldnt cost a lot to repair providing the faulty valve can be located so return to the dealer as they will have a good idea as yours isnt the first to go wrong iam sure

Sep 24, 2012 | Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

56 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

80417 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

john h

Level 3 Expert

15314 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides