8
Tools and Accessories Required
Power drill with 3/8” drill bit.
Self tapping 3/16” screws
Welding Tools for couplings
Zip ties for fastening cabling to the vehicle
Electrical Connectors
Laptop
Installation Procedure
Step 1 - Installing the thermocouple and stainless steel backpressure sampling tube
a.
Drill two 3/8” holes in the exhaust pipe for the couplings. The couplings should be installed on a
straight section of pipe and not on bends or flex pipe. They should also be located upstream of the
DPF and as close as possible to the DPF inlet.
b.
Find the 1/4” NPT coupling and the M14 coupling and weld to the exhaust pipe so that they align with
the drilled holes. The M14 coupling is the larger coupling. The NPT coupling should be upstream of the
M14 coupling.
c.
Locate the thermocouple, apply anti-sieve to the threads, and tighten into the M14 coupling as shown
in Figure 3. Keep thermocouple wire away from hot surfaces.
d.
Locate the 1/4” swage to 1/4” NPT brass fitting, apply anti-seize to the NPT threads, and tighten into
the NPT coupling.
e.
Insert the stainless steel sampling tube into the 1/4” swage hole until it stops. Tighten the compression
nut finger tight and then turn one full turn further with a wrench. The backpressure sampling tube is
shown in Figure 4.
Figure 3 -
Installation of the thermocouple sen-
sor at the DPF inlet (pressure tube not installed
yet). Keep thermocouple wire away from hot
surfaces.
Figure 4 -
Installation of the backpressure
sampling tube
ATTENTION
If the exhaust inlet diameter is less than 3 inches, an NPT coupling and a ther-
mocouple adaptor will be required to center the thermocouple tip within the
pipe. Please call technical services.
