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07.06.2021 18:25:27
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If it reads much over 30 ohms, we need to check the brushes and slip rings. Remove the air cleaner. Directly behind the air cleaner is the end bell of the generator. In the middle of the end bell is a small plastic rectangular cover. Use a flat tip screwdriver to pry the cover out and expose the brush block. The brush block will have 2 round holes in it with a single uninsulated wire going through. This is the brush lead. Use a small probe or piece of small diameter stiff wire and push the probe through the hole until it touches the brush. Mark the probe where it is flush with the brush block. Remove the probe and measure from the mark to the end of the wire. If it is more than 1", the brushes are worn out and must be replaced. Remove the 2 screws securing the brush block, turning each screw 3-4 times each. The brush block must come out straight, as it is made of ceramic and is very fragile. Be careful not to drop the screws down into the end bell. They are very difficult to retrieve. Use the wires to help pull the brush block out. Inspect the ends of the brushes. They should be smooth and not cracked or chipped. They should be worn into an even arch pattern. They should slide freely into and out of the brush block. If they stick or bind, clean the brush block with electrical contact cleaner. Inspect the slip rings. They are the 2 bands that the brushes ride on. They are made of copper and should be as shiny as a new penny. They should be smooth and have no pits or scratches. If they are dirty, you can clean them by removing the spark plug wires and grounding them out. Attach a piece of scotch brite to the end of a small stick. Press the scotch brite against the rings and crank the set. Do not crank for more than 15 seconds without stopping for a minute or two to let the starter cool. When the rings are clean, ohm across them. They should read 20-30 ohms. If not, the rotor is bad and must be replaced. If it is good, reinstall the brush block.
Find the voltage regulator. It is the aluminum box about 3" square with the 12-pin connector, located on the base pan to the right of and behind the control box. The connector itself should actually be in the control box. Unplug the connector. Set your meter to ohms. Testing on the harness side of the plug, not the voltage regulator itself, ohm across pins J4-9 and J4-10. It should read 20-30 ohms.
Remove and inspect the brush block and clean the slip rings with an abrasive pad, try that and see what happens.
Okay so I just pushed on brushes and got 355.5 ohms so I am believing brushes are worn out more
Reconnect the 12-pin connector at the voltage regulator. Set your meter to VDC and connect the black probe to a good ground. Insert the red probe into the back of the plug at wire J4-7 and press the start button. It should read at least 10V. Insert the red probe into the back of the plug at wire J4-9 and press start. It should read at least 12V and climb as you hold start. Insert the red probe into the plug at wire J4-10 and press start. This voltage can vary from 1.5 - 20 volts, as long as there is voltage showing.
Variety of telsta boom wiring diagram you can download free of charge. We found out that most people search telsta bucket trucks for wiring schematic on search engines like google. I need an electrical schematic for a telsta bucket truck model su34p i know its an electrical problem but cant find the right circuits to make it lift.
I need a manual for hydraulics and electrical wiring for a telsta boom for a bucket truck. Telsta bucket truck wiring diagram march 10 2018 by luqman. 991003291 for the boom lift jack on a telsta a28d bucket truck. here
Telsta bucket truck wiring diagram. I need a manual for hydraulics and electrical wiring for a telsta boom for a bucket truck. M a2sc serial 89140 0 28 300lbs 2500 psi generl cable. Am not getting power. more
We decide to present a most relevant image for you. M a2sc serial. Bucket truck wiring not real sure all that is involved with what you are doing but it seems that all you need to do is go from the onan gen and find the wire that goes to the outlet on the bucket and trace it back. [links]
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This Truck has an older boom on it but has lots of life left, The chassis was a more
2001 Sterling single axle bucket truck for sale from our fleet. Single Man [links]