J.P. Instruments Slim Line Gauges Installation Guide - Manual (Page 3)

INSTALLING THE SLIM LINE® INSTRUMENT SERIES PAGE 3 OF 14
REV B
Position probe
in approximate
center of
exhaust
Probe
Clamp
Thimble
note orientation
of slot
Seal Washer
6) Cylinder Head Temperature (CHT) Probe, Bayonet Installation
The bayonet probe 5050-T has a captive 3/8-24 boss that is screwed into the base of the cylinder. The probe has
a screwdriver slot to facilitate tightening.
7) Cylinder Head Temperature (CHT) Probe, Spark Plug Gasket Installation
If there is no socket hole for the EGT probe on any cylinder or the aircraft is equipped with Tanis heaters, use a
spark plug gasket probe.
The spark plug gasket probe, PN M-113, replaces the standard copper spark plug gasket on one spark plug.
Choose the upper or lower spark plug, the one that provides the best correlation with the other temperature
probes. Due to the spark plug location, the gasket probe may read 25
o F higher or lower than the factory probe.
Place the probe on the plug that receives the most direct cooling air.
8) Oil temperature (OIL) Probe Installation
Oil Probe Location
Alternate Oil Probe
Location
Lycoming Engines
front view
Lycoming Engines: The PN 400505-L probe is for all Lycoming direct drive engines and is installed in the
right (passenger side) front oil galley by removing the existing 1/8 NPT plug on the passenger side of the
engine and inserting the optional JPI oil probe supplied with the kit.