Table 3-1. Operator/Crew Preventive Maintenance Checks and Services
B - Before Operation
D - During Operation
A - After Operation
ITEM TO BE INSPECTED
Check engine coolant level. Proper level is 2 inches (50.8 mm) below filler
and connections for leaks or other defects. Check antifreeze when operating
Check fuel level. Use gauge on instrument panel (figure 2-3). Fill tank as
necessary. See para 1-10b for capacity and recommended fuel. Check tank
for leaks or other damage. Check filler cap gasket for damage. Check fuel
lines and fittings for leaks or damage.
Check oil level on bayonet gauge (figure 3-2). Add oil as necessary to bring
Change oil filter first 50 hours of operation and every 100 hours thereafter,
under normal operating conditions. Change oil more frequently under unusual
OIL SEPARATOR ASSEMBLY
Check oil level and fill to overflow as necessary (figure 3-3). Refer to
Change oil every 500 hours of operation or once a year. See para 1-10b for
Change separator element every 4000 hours of operation or once a year.
ENGINE OIL FILTER
Replace the engine oil filter every other engine oil change (figure 3-4). Refer
Clean the compressor oil filter every 100 hours of operation for the first 500
hours; clean every 500 hours thereafter and each time separator oil is changed
ENGINE FUEL FILTER
Replace the engine fuel filter every 100 hours of operation (figure 3-8).
Check for worn, frayed, or broken drive belt. Check tension of belt (figure 3-9).
Tighten a new belt after 8 hours of operation.
3-8 Change 2