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Pistons Exciter
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If you have a pressure washer business you will eventually need to change out or repair the pump. There are a few things you should know to make such change outs easy. You may also need to study up on preventative maintenance so that you do not have to worry about pump failure. Your pressure washer probably has one of two different pumps if it is industrial grade. Either a Cat Pump or a General pump; both are industry standards. General is the leader in the industry for sales and many prefer Cat as it sucks better from plastic water tanks.

Your pump is powered by two parallel belts connected to your engine. You should make sure not to starve your pump from water. When the water tank is empty turn off the engine. Starving a pump will burn it out in about thirty-five minutes. The manufacturer says five to ten minutes, but that's not life threatening. Your pump has a safety feature whereby when you are not spraying the water, it will automatically by pass into the tank provided there is enough water for the complete loop. Thank you. We also thought it was one of our great ideas. You should change the oil in the pump every month. Make sure your pressure washer rig is on level ground and fill the pump to the red dot on the center of the eyeglass. Over filling is a really bad idea.

On your pump you will notice six large bolts. Inside of the holes are check valves with springs. After 300-500 hours you should change them. You can do this yourself. The valve kits are $60.000. It's very easy:

Unscrew bolts

Remove old valve

Replace valve

Make sure to seat the valve evenly

Screw the bolt back in by hand

Make sure the O-ring on the bolt is snug

Tighten with wrench pretty tight

Inspecting The Pump

If you drain the oil and it's got bubbles in it or has turned white, then you have a blown seal and water is getting into the oil because: It overheated due to water starvation; The casing cracked because of vibration; You forgot to change the oil, dummy ($600 mistake and one lost day's work if you can get the parts that fast).

Check to see if the belts are tight. If not tighten them. Look for water drips. A slow drip on the exit side of the pump could cost you as much as 150 PSI at the nozzle. A fast drip (two to three drops per second) could be a 250-300 PSI loss at the nozzle. A steady drip stream might be a 500 plus PSI loss. When you see water leaking, fix the leak ASAP. Be sure to use ample Teflon tape when re-tightening fittings. This will stop future leaks, prevent rust and make fittings easy to separate in the future.

A hole in a hose or leak on the inlet side of the pump causes air to get in. The pump will act as if it's starving for water. It might even pulsate. When the water level in your tank reaches a point below the leak in the hose, air will replace the water and you'll get zero pressure. That makes it very hard to wash anything.

Low pressure in the pump can be caused by a number of things; these are by far the most common, but this is not a complete list, generally if you go thru this list the problem will be solved, check the easiest things first such as water supply:

Faulty pressure gauge (Replace)

Out of water (Fill up tank)

Old or worn out tip at gun nozzle (Replace)

Incorrect tip (Remove and replace)

Belt slippage (Tighten belt)

Hose leaks (Fix leaks)

Faulty unloader (Replace)

Mis-adjusted unloader (Re-adjust)

Worn packing in pump (Take it to dealer)

Inline filter clogged with dirt (Clean it)

Obstruction in spray nozzle tip (Remove it)

Chemical metering valve sucking air (Turn it off)

Slow engine rpm (Check engine)

If you have a pulsating issue at the gun or the machine is Fluctuating pressure, this is a completely different problem than low pressure. You should check for: Worn piston packing (Call dealer). Pump sucking air (Fix hole), Blockage in valve (Remove, check valves and take out blockage). If it is fluctuating and very noisy or if your pump is only noisy check for:

Air in suction line (Check water supply and connections)

Broken or weak inlet or discharge valve springs (Call dealer)

Excessive matter in valves (Check and clean if necessary)

Worn bearings (Check and replace. If necessary, call dealer)

Vibrations from mounting (Tighten it. If unable, call dealer)

If you find the presence of water in the pump oil, it could be caused by: Blown pump head seals, High humidity in air (Change oil more often) or Piston packing worn then call your dealer. If water or oil drips from the bottom of the pump this could be a number of things such as Piston packing worn, the O-ring plunger retainer is worn, Oil seal worn, Pump head seal shot or Crack in pump head. If any of these call the dealer and see if they have the parts in stock, you may be able to fix it yourself if you feel confident, if not you will need to leave your machines with the dealer for repairs.

Pump lubrication should be done every three months or 500 hours, which ever comes first. Use SAE 40 weight oil or equivalent for Cat pumps. Use 20/30 weight non-detergent oil for General pumps. It should be hydraulic oil with anti-wear and rust inhibitor additives. The oil level should be checked by looking in the window on the side of the pump. Only fill oil half way to the red dot.

As a pressure washing contractor you must understand how to maintain and repair your equipment, think about it.

"Lance Winslow" - Online Think Tank forum board. If you have innovative thoughts and unique perspectives, come think with Lance; www.WorldThinkTank.net/. Lance is an online writer in retirement.

Detroit Pistons vs. Charlotte Bobcats Live Streaming Odds and Picks

Detroit Pistons vs. Charlotte Bobcats Live Streaming Odds and Picks: Its just the right time to go for online basketball betting with the Detroit Pistons taking on Charlotte Bobcats this Tuesday. This exciting match begins at 7:00 PM, ET at the Charlotte Bobcats Arena. Although the Detroit Pistons go into the match without three of their main players, team coach John Kuester is confident that they would pull off a win. Basketball betting fans are surely in for a treat this Tuesday. Sportsbooks would sure be abuzz this Tuesday.

Basketball betting fans second John Kuester’s view as the Charlotte Bobcats are going into the match without two of their top players. Further, Detroit Pistons beat Charlotte Bobcats 98-75 in their previous encounter on November 11, 2009 at home. A win for Detroit Pistons would end their four-game slide. No wonder John Kuester is looking forward to this game and exudes confidence in winning this game. Here’s some news for online basketball betting enthusiasts, Charlotte Bobcats’ Steven Jackson remains doubtful for Tuesday’s game and so is forward Gerald Wallace, who is down with painful headaches. Gerald Wallace is currently averaging 12.1 rebounds and 17.7 points. Absence of Steven Jackson could severely hamper Charlotte Bobcats’ chances of victory as the Bobcats’ just cannot find a replacement for him. Well there’s some thing to ponder about for basketball betting enthusiasts.

Detroit Pistons are also with injury woes. Richard Hamilton and Ben Gordon remain doubtful for Tuesday’s game. The injury woes could well make Detroit Pistons depend on Rodney Stuckey, who is averaging 4.4 assists and 19.7 points.

Basketball betting picks could favor Detroit Pistons as they won 8 of their last 9 games against Charlotte Bobcats. Charlotte Bobcats could find it tough and the injury list wouldn’t help their cause. At 91.3 points a game, Bobcats rank among the lowest scoring teams in the entire league. Now that’s something for online basketball betting fans.

Check out Online Betting for Detroit Pistons vs. Charlotte Bobcats Live Odds

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1988 yamaha exciter 570 wont stay running... desperately need help!!?

i have a 1988 yamaha exciter 570 that my buddy blew a piston in and i bought for dirt cheap, i replaced the blown piston and tried to get it to run but it only stays running for like 3 seconds. i feel it might be fuel filter or fuel pump, but i have no clue were the fuel pump is located, and im currently cleaning the carbs out to see if that will work, but i really need some help and cant find anything online like a service manual or owners manual, and cant afford to buy one on or off line... can anyone help?

follow the plastic hoses from the carburetor down and you will find the fuel pump. One hose might go from the the crankcase body to the fuel pump also.Between the fuel pump and the fuel tank you will find the fuel filter in the plastic fuel line. Check everything for water contamination. Good luck.

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