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EGR System Check

CAUTION: Do not attempt to adjust the link-rod between output lever and swing arm on injection pump. If link-rod setting is changed, it will be necessary to replace complete pump.
  1. An improperly functioning EGR system results in heavy exhaust smoke and poor engine performance. If symptoms are not found when engine is cold, warm up engine until fan engages. This is to locate the components which malfunction only when hot.
  2. To check system, remove bracket holding electrovalves and ECB. This exposes ECB electrical connectors. Disconnect connector between ECB and engine speed sensor. Start engine and see if symptoms disappear. If so, EGR system is at fault. Check adjustment of each load sensor next. See LOAD SENSOR ADJUSTMENT  . If symptoms are still present, perform the following tests.
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