TM 5-2410-241-23-1
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ENGINE OIL PRESSURE TEST
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1. Change engine oil (WP 0114), and replace engine oil filter (WP 0083).
2. Assemble pressure gauge and lines (WP 0304).
3. Remove dust cap (Figure 1, Item 1) from oil pressure port (Figure 1, Item 2).
4. Install pressure gauge on engine oil pressure port (Figure 1, Item 2).
6. Start engine (TM 5-2410-241-10). Allow engine to reach normal operating temperature.
7. With assistance, observe and record pressure on gauge at 1,400 rpm and 2,100 rpm:
a. Minimum oil pressure at 1,400 rpm speed is 18 psi (124 kPa).
b. Minimum oil pressure at 2,100 rpm speed is 28 psi (193 kPa).
c.
Maximum oil pressure is 100 psi (689 kPa).
8. Turn ignition switch and battery disconnect switch to the OFF position (TM 5-2410-241-10).
9. Remove pressure gauge from engine oil pressure port (Figure 1, Item 2).
10. Install dust cap (Figure 1, Item 1) on oil pressure port (Figure 1, Item 2).
11. Compare actual engine oil pressure gauge to Cat Mil ET. Review recorded oil pressures as follows:
a. If oil pressure is lower than 18 psi (124 kPa) at 1,400 rpm engine speed, refer to Low Oil Pressure in this
work package.
b. If oil pressure is lower than 28 psi (124 kPa) at 2,100 rpm engine speed, refer to Low Oil Pressure in this
work package.
c.
If oil pressure is higher than 100 psi (689 kPa), refer to High Oil Pressure in this work package.
d. If actual oil pressure gauge is within specification, but does not reflect value from Cat Mil ET, verify correct
operation of Cat Mil ET. If measurements are still incorrect, replace oil pressure sensor (WP 0091).
Figure 1. Engine Oil Pressure Test Port.
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