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Cummins — At each “E” Maintenance Check, perform all °A”,"B","C”

For these Cummins models: G-1710, G-495, G-743, G-855, GTA-1710, GTA-743, GTA-855.

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Procedure

  1. 1. The engine must be started and the speed gradually increased to 1,200 RPM or a fast idle, with no load, and operated until the engine is thoroughly warm.
  2. 2. The oil sump must be drained and drain plugs rein- stalled. New oi] may be added or sump may remain: empty until engine is ready for use. If sump remains empty, tag engine with warning tag.
  3. 3. Shut off main gas supply and disconnect one wire from each transformer, so engine wifl not start. 4, Remove 1” pipe plug in intake manifold. Remove “Altronic’” Box. With hand or power sprayer, spray minute amounts of SAE 10 Jubricating oi) into intake manifold while cranking engine slowly using intermittent turning of switch key.
  4. 5. Cover all intake manifold openings with tape to prevent entrance of dirt and moisture.
  5. 6. Cover all engine openings, including coolant inlets, cylinder block, oil breather and crankcase.
  6. 7. Drain coolant from cooling system unless it is permanent type antifreeze with rust inhibitor added,
  7. 8. Store engine in a place protected from weather where air is dry and temperature is uniform.
  8. 9. Bar engine crankshaft two or three revolutions each three to four weeks. Permanent Storage
  9. 1. When an engine is to be stored for a long time (six months or more), the Jubricating system, cooling ~ system, fuel system crankcase and external parts must be protected against rust and corrosion.
  10. 2. The engine should be started and the speed gradually increased to 1200 RPM or a fast idle, with no load, and operated until the engine is thoroughly warm. Stop engine and drain oid oil.
  11. 3. Fill crankcase to full mark on bayonet gauge or dipstick with preservative oil, U.S Military Specification MIL-L-21260, Type P-10, Grade 2 SAE 30. This specifi- cation may be obtained as Shell-Brand Code 66202, Texaco Preservative Oil 30 or equivalent.
  12. 4. Start the engine and operate five to ten minutes on the preservative ail. Stop the engine, and remove spark olugs, pour 3 to 4 az. oil in each cylinder. Install plugs and turn engine over for 30 seconds or so.
  13. 5. Drain ail oil sumps of pumps and compressors, coolers, filters and crankcase. Replace al! plugs after draining.
  14. 6. Remove intake and exhaust manifolds.
  15. 7. Spray all intake and exhaust ports with preservative oil.

Source: manual:CUMMINS G495 G743 G855 GTA743A GTA743B GTA855 G1710 GTA1710 Operation and Maintenance Manual (2).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.