Visually inspect pickup screen tube and screen assembly; refer to section
.
If no stress cracks, twisted screen tube, or cracked flange gaskets are found, check crankshaft main bearings; refer to section
.
If stress cracks, twisted screen tube, or cracked flange gaskets are found, refer to section
.
Pickup Screen Tube and Screen Assembly Repair
Perform the following steps to repair the pickup screen tube and screen assembly:
Replace all damaged components identified during inspection and install; refer to section
.
Verify repairs to pickup screen tube and screen assembly; refer to section
.
Test Engine with Repaired Pickup Screen Tube and Screen Assembly
Perform the following steps to determine if repaired relief valve resolved low oil pressure:
Install the Diagnostic Data Reader to the vehicles Display Data Line Adaptor, see Figure
24089
; refer to OEM guidelines.
Start and run engine speed at 1800 r/min.
Visually examine the DDR for oil pressure reading.
If the DDR indicates 241 kPa (35 lb/in.2
), or more at 1800 r/min, shut down the engine and disconnect the DDR. No further troubleshooting is required.
If the DDR indicates less than 241 kPa (35 lb/in.2
) at 1800 r/min, shut down the engine and disconnect the DDR, check crankshaft main bearings; refer to section
.