Question about HP DeskJet 3745 Printer

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Knocking motor I have a 96 Chevy Silverado that wants to knock when you first crank the vehicle and when it has rpms put to it even in park. I dont know where to start .

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Hi Im buying a vehicle that has a knock in it. Since the body is in excellent shaped I decided Im going to get a new motor or a used one with a warrenty. Good luck.

Posted on Mar 26, 2009

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This must be the largest portable printer in the world! HAHA!!
Seriously though, i believe you may have a bad wristpin or crank journal bearing. you weren't specific on engine type so i am making an assumption that the motor is high mileage. Good luck!

Posted on Sep 19, 2008

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How do I sort the knocking sound on this machine hp laserjet M5033 MFP

Knocking usually means the gears are not turning the cartridge rollers properly. This would be why it probably doesn't knock with the door open when you run a motor test.
Take the Cartridge out, close the door, and and let the motors turn and see if it knocks still. While you close the door look to see if there is a gear that protrudes from one side as the door closes. If the gear does not come out when the door is closed then it will not turn the cartridge rollers and would cause the knock. Also, if the gear does come out but does not link up to the cartridge fully it can cause the same kind of sound. You would also get a similar result if the gear's teeth are stripped out on the drive side of the gear.
Many models do not have that type of drive gear. They may have a drive gear on the left side of the cartridge compartment. Look at that to see if it show wear and tear.

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