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Indication of Fault The hydraulic pump control does not operate.

Possible Cause Malfunction of SCR 2 circuit.

Check for a short circuit across SCR 2.

Check for a short circuit across the suppressor for SCR 2.

Check for an open circuit across SCR 2 or an open gate lead to SCR 2.

Malfunction of SCR 1 circuit.

Check for an open circuit or loose connections between SCR 1 and PZ8 (white/blue wire).

Check for an open circuit or loose connections between SCR 1 and D3 suppressor and PZ9 (blue wire).

Malfunction of SCR 1.

An open or bad gate circuit to SCR 1. No easy test is possible. Replace SCR 1 after the other checks have been done and no other problem is found.
  • Posted 13 Mar 2017 05:22
  • By kevin_t
  • joined 2 Dec'10 - 1,301 messages
  • Pennsylvania, United States

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