TROUBLESHOOTING PROCEDURES - CONTINUED
Table 1. Engine Troubleshooting Procedures - Continued.
TEST OR INSPECTION
Engine Oil Pressure is Low (Warning
Light and Warning Horn On) -
DO NOT service cooling system unless engine has been allowed to
cool down. This is a pressurized cooling system and escaping steam
or hot coolant will cause serious burns.
DO NOT remove cooling system radiator cap when engine is hot.
Allow engine to cool down. Loosen cap to first stop and let any pres-
sure out of cooling system, then remove cap. Failure to follow this
warning may cause serious burns.
Wear effective eye, glove, and skin protection when handling cool-
ants. Failure to do so may cause injury.
2. Verify engine oil pressure switch 1. If oil pressure is not 13-40 psi (90-
is operating properly. Remove
276 kPa), install engine oil
engine oil pressure switch from
pressure switch on elbow (WP
pressure gauge to elbow. Start
lb-ft (20-25 Nm). Go to Step 3.
engine and allow engine to warm
up. Engine oil pressure should be 2. If oil pressure is 13-40 psi (90-276
kPa), remove pressure gauge from
13-40 psi (90-276 kPa). Shut
elbow and replace engine oil