Cummins — Since major inspection requires partial disassembly of the

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

Procedure

1. The engine must be started and the speed gradually
2. The oil sump must be drained and drain plugs rein-
3. Shut off main gas supply and disconnect one wire from
5. Cover all intake manifold openings with tape to prevent
6. Cover all engine openings, including coolant inlets,
7. Drain coolant from cooling system unless it is
8. Store engine in a place protected from weather where
9. Bar engine crankshaft two or three revolutions each
1. When an engine is to be stored for a long time (six
2. The engine should be started and the speed gradually
3. Fill crankcase to full mark on bayonet gauge or dipstick
4. Start the engine and operate five to ten minutes on the
5. Drain ail oil sumps of pumps and compressors,
6. Remove intake and exhaust manifolds.
7. Spray all intake and exhaust ports with preservative oil.
8. Replace intake and exhaust manifolds.
9. Inspect coolant in cooling system. If coolant is
10. If air starter is used, remove exhaust plate from top of
12. Brush or spray a film of rust preventative compound
13. Remove valve covers and spray preservative oil over

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.