Electronics International UBG-16 User Manual

Page 11

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5. EGT Probe Installation:

EGT Probe Installation:

Look at each exhaust stack and determine the best location at which all of the EGT probes can be mounted at
the same distance down from the exhaust ports. The ideal location is 1 1/2", but ease of installation should
prevail. Drill a 13/64" diameter hole in each exhaust stack. Insert the probe and tighten the hose clamp. As
the hose clamp is heated and cooled, it will become loose as it conforms to the exhaust stack. After the first
10 hours of operation, each hose clamp should be retightened.

IMPORTANT NOTE: For Cessna 210’s or any aircraft using a slip joint in the exhaust system, install the
EGT probes ABOVE OR BELOW THE SLIP JOINT. Installing a EGT probe in the slip joint can damage
the probe.

6. CHT Probe Installation:

CHT Probe Installation:

A single CHT probe should be placed on the hottest cylinder. In a 6-cylinder engine this would be one of the
center cylinders. On a 4-cylinder engine this would be one of the back cylinders.

If a second CHT probe is to be installed it should be placed on one of the front unobstructed cylinders. This
will allow the UBG-16 to detect shock-cooling automatically.

Most engines have a port just below the lower spark plug for the CHT probe. If your engine has a primary
CHT probe in one of the cylinders, do not remove it. The UBG-16 is not STC'd as a primary replacement
instrument. Select another cylinder for your probe. If you’re putting a CHT probe on every cylinder use our
P-102 Gasket CHT Probe for your primary cylinder.

7. TIT Probe Installation:

TIT Probe Installation:

If you currently have a TIT gauge mounted in the aircraft it may be a primary engine instrument. If this is the
case you will need to install a secondary TIT probe. The TIT probe should be installed on the inlet of the
Turbo-charger one to two inches before the Turbo-charger flange. Drill a 13/64" diameter hole in the exhaust
stack. Insert the probe and tighten the hose clamp. As the hose clamp is heated and cooled, it will become
loose as it conforms to the exhaust stack. After the first 10 hours of operation, each hose clamp should be
retightened.

8. OIL T

OIL T

OIL Temperature Probe Installation:

emperature Probe Installation:

Sometimes finding a location for a secondary oil temperature probe can be a problem. The P-120, P-100, P-
111, P-112, P-114 and P-128 are all sealed probes appropriate for measuring oil temperature. See the
"Probes" section of the price sheet for dimension information.

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