The aftertreatment diesel particulate filter differential pressure sensor is marked with “HI” on one side of the
sensor (1 ). This indicates that the high-side differential pressure sensor connects to this port. The high-side differential pressure sensor tube connects to the aftertreatment system before the inlet to the diesel particulate filter.
NOTE: In vertical aftertreatment orientations, an aftertreatment diesel particulate filter differential pressure
sensor tube support can be present. Be sure the differential pressure tubes are seated in the support clip.
Apply a coating of Loctite 80209, 51002, 76732, copper or silver grade, or equivalent, to the threads on the
differential pressure sensor tubes prior to assembly. Do not allow the Loctite on the inside of the differential
pressure sensor tube nuts. This can cause a blockage.
Minimum Loctite Anti-seize temperature range specifications: 1600ยฐ F [870ยฐC].
Install the differential pressure sensor tubes on the aftertreatment system.
NOTE: Be sure the differential pressure sensor tubes are not making contact with each other or any other vehicle
components prior to tightening the differential pressure sensor tube nuts.
Tighten the aftertreatment diesel particulate filter differential pressure sensor tube nuts.
Torque Value : 17 Nโขm [ 150 in-lb ]
Attach the flexible hose sections of the differential pressure sensor tubes to the differential pressure sensor
using two spring clamps.
Install the p-clips or the tube clamps that hold the exhaust gas filter pressure sensor tubes on the exhaust aftertreatment system.
Tighten the p-clips or the tube clamp bolts, if necessary.
Torque Value: 14 Nโขm [ 124 in-lb]
