Series 60 DDEC VI Troubleshooting – Section 2.10 Defective Pickup Screen Tube and Screen Assembly

Section 2.10
Defective Pickup Screen Tube and Screen Assembly

To determine if a defective pickup screen tube or screen assembly is causing low oil pressure, perform the following steps:‪

1. Remove pickup screen tube and screen assembly; refer to appropriate service manual, lubrication system chapter.
2. Visually inspect pickup screen tube and screen assembly; refer to appropriate service manual, lubrication system chapter.
   1. If no stress cracks, twisted screen tube, or cracked flange gaskets are found, check crankshaft main bearings; refer to "2.11 Defective Crankshaft Main Bearing Shells" .
   2. If stress cracks, twisted screen tube, or cracked flange gaskets are found, replace all damaged components identified during inspection and install; refer to appropriate service manual, lubrication system chapter.
3. Verify repairs to pickup screen tube and screen assembly; refer to "2.10.1 Test Engine with Repaired Pickup Screen Tube and Screen Assembly" .

Section 2.10.1
Test Engine with Repaired Pickup Screen Tube and Screen Assembly

Perform the following steps to determine if repaired pickup screen resolved low oil pressure:‪

1. Connect to DDDL 7.0.
2. Start and run engine speed at 1800 rpm.
3. Visually examine DDDL 7.0 for oil pressure reading.
   1. If DDDL 7.0 indicates 241 kPa (35 psi), or more at 1800 rpm, shut down the engine and disconnect DDDL 7.0. No further troubleshooting is required.
   2. If DDDL 7.0 indicates less than 241 kPa (35 psi) at 1800 rpm, shut down the engine and disconnect DDDL 7.0, check crankshaft main bearings; refer to "2.11 Defective Crankshaft Main Bearing Shells" .