Clark C500 SERIES:
Starter Solenoid

Hello All, Quick Question.
First I just want to say I am not sure what model the forklift I am working on is, It is a clark, has a points style ignition, and is propane fed. My main concern is the starter not working. The Starter has four terminals, one labeled S, one labeled R and 2 big terminals, one that houses the +12VDC and another terminal that connects to the starter frame. When the key is turned on voltage is seen at the wire feeding the S terminal, but no voltage is seen at the R terminal. The only way to start the engine is by jumping the large terminal that houses the +12VDC to the S terminal. I'm assuming that the solenoid is shot, but wouldn't that cause the plunger not to engage onto the flywheel? Not well versed with my starter knowledge (as seen). Any how my main question is what does the R terminal do, and would it be responsible for the no crank situation? If so how about should I go fixing it, and if not what may be the issue. One last thing, the wire feeding the S terminal always has 12 volts even when the key is not in the "cranking over position" meaning the wire is seeing 12 volts in all positions except the off position. Thanks in advance for any help.
  • Posted 6 Apr 2022 08:58
  • Discussion started by Aidan_Grosz
  • Florida, United States
Aidangrosz
Showing items 1 - 1 of 1 results.
I read your post if you are getting 12volts at the s post at all times the starter would crank as soon as the key is turned on this should not be. How this should be wired there should be a wire at the back of the key switch marked start should be center post there should be 12 volts there only in the crank position.after that if c500 Clark on trans valve body is natural safety switch wire from keyswitch goes there than on other side of natural safety switch goes to s post on starter when only in neutral will truck start. Check wiring also the r post should have no bearing on the starter cranking it is sometime used to get voltage to coil when cranking
  • Posted 10 Apr 2022 07:11
  • Reply by Scott_
  • Pennsylvania, United States
Scott

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Movers & Shakers
Linda Häkkilä Linda Häkkilä
vice president, Investor Relations, Konecranes
vice president operations, Elokon Group
President, EP Equipment Europe
Senior vice president human resources, Kalmar