Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›COOLING SYSTEM

Cummins/Onan TGHAA — COOLING SYSTEM

For the Cummins/Onan TGHAA.

Applies to: Cummins Onan Tghaa

Before you start

  • Do not run the generator set without
  • Discharge air from the engine can

Procedure

  1. Disconnect the starting battery, negative (-) cable first, to prevent accidental starting.
  2. Remove the Torx screws and the two screws on top. Through the spark plug access opening unhook the spark plug cable on the the oil filter side from the top panel and remove the panel.
  3. Remove the left and right side panels. Five Torx screws and two capscrews at the top of the cyl- inder heads secure each.
  4. Remove the end panel which is secured by the four remaining screws along its bottom edge. Cooling System Disassembly for Engine Block Service:
  5. Remove the cooling system panels, blower vo- lutes, muffler and exhaust manifold (see EX- HAUST SYSTEM in this section).
  6. Remove the blower. See Blower Removal in this section.
  7. Disconnect the lead connected at the low oil pressure cutoff switch (next to the oil filter).
  8. Remove the four capscrews that secure the in- ner bulkhead to the engine and remove it.
  9. Thoroughly clean the engine cooling fins. PANEL LEFT SIDE PANEL RIGHT (SERVICE) SIDE PANEL INNER BULKHEAD PANEL BLOWER VOLUTES FIGURE 10. COOLING SYSTEM PANELS

Source: manual:965-0501B Onan TGHAA Genset Service manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.