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I have a Dynahoe 490 backhoe. I want to take off one of the pistons because it is leaking, but the 1/2" plug seems a bit big. Why doesnt it fit... Also need a piston rebuild kit

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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

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Posted on Jan 02, 2017

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  • 142 Answers

SOURCE: I'm 5400 ft and running a 490 main jet. the plug

try a cooler range plug with the same jets and see w

Posted on Jun 02, 2009

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MakisRC51
  • 408 Answers

SOURCE: NEED PISTON KIT ,ALREADY HAVE THE RINGS

Try to take with you one of the old ones and go to a Wiseco's dealer store.Perhaps you find there.Honda OEM parts does not provide anymore?

Posted on Jun 03, 2009

czaa
  • 4521 Answers

SOURCE: I need a cylander,head, piston and bolts to rebuild it.

search archway mc salvage in st louis may be able to salvage piston-try getting a mc rebuild manual

Posted on Jan 11, 2010

  • 49 Answers

SOURCE: cant find piston kits

j&e custom pistons

Posted on Jul 06, 2010

kirkx
  • 2019 Answers

SOURCE: I need to rebuild both of my front calipers on my

If by "disassembling the calipers" you mean splitting them open, DO NOT do that.
You detach the caliper so that you can remove the pads and get at the piston, but then what you should do is to simply pop the piston out.
That can be done simply by pumping the brake pedal, using air pressure (with a rag to prevent the piston from flying around), or with a grease gun.
Then once the piston is out, you simply wire brush any corrosion off. If the piston is so pitted that it can not be made smooth and will leak, then it should be replaced.
If you wash them out with anything other than brake fluid, then be sure to blow out any residue with compressed air.
Use lots of brake assembly lube, and ensure the new dust seal is water tight. Bleeding the brakes will flush out any remaining dust.

Posted on Oct 04, 2010

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1 Answer

My opel kadett 1995 model it burn the plugs and the fuse what can course that.


a bit unusual that
are you gaping the plugs to spec before fitting
if so .....try a hotter range plug
or fit iridium's ..last much longer

which fuse keeps blowing ?
it may lead to a solution for you


how is the fuel consumption /oil usage ?

i was thinking of these causes
has 16 valves - valves are burnt or leaking
-over heating coil ,or exciter or resistor
-too much fuel in the combustion chamber
...burning oil , weak piston rings



26310859-cpkijx1hgivtayh20u1irnmn-2-0.jpg

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4. Accelerator pump leaking or no output.
5. Plugged bowl vent.
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You have to find the leak and seal it up, hey. It may help to picture where vacuum originates in the engine: As the pistons move down in the cylinders they pull air in from the intake manifold. This creates a pressure drop in the intake, a vacuum that is maintained as the engine is running. New air that is pulled into the intake is measured by the Mass Air Flow sensor mounted in the big boot between the air filter and the intake. If extra air is pulled into the intake manifold from a vacuum leak, uncalibrated air, the computer can figure it out from the oxygen sensors reading in the exhaust-mixture is too lean, so the computer will try to compensate by delivering more fuel, but can't deliver enough, mix is still too lean, so computer sets a code for the vacuum leak.
The intake will have a few vacuum taps with hoses running to engine or car controls that require vacuum to operate. If one of the hoses comes off or has a leak, that is extra air into the intake. Your power brake booster has a large vacuum tap. That may be the problem. With the engine running, pull off that line and plug it, and see if engine speed changes. If the idle drops that may be your leak-a failed power brake booster.
If nothing yet, keep engine running and spray some starting fluid around the mounting area of the intake manifold (maybe the intake gasket has failed and sprung a leak) and listen for a change in engine pitch or speed. The fluid may get sucked into the intake and cause speed to change. If it does, you would need to remove the intake manifold and fit a new manifold gasket.
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1 Answer

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I'm 5400 ft and running a 490 main jet. the plug


try a cooler range plug with the same jets and see w

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I have never changed the plugs on this type of bike but here is a rough idea for you.

Dissasemble:
1. Remove the fuel tank making sure you dont spill any fuel
2. Remove the Airbox
3. Number up the plug leads (mark them numbers 1-4) making sure you dont get them mixed up i.e no.1 lead resembles piston no.1, no.2 lead resembles piston no.2 piston and so on
4. Remove the spark plugs with a correct size spark plug socket

Installing:
5. Before installing the new spark plugs make sure you have made the right gap clearence on the tip of the plug
6. Install the spark plugs
7. Re-fit the leads making sure the correct marked up lead goes with the correct piston
8. Fit the airbox
9. Fit the fuel tank

Hope this is help to you. If you are in doubt then take the bike to a nearby mechanic in which i should imagine that it is not expensive to have them fitted professionly

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