First, I installed a CHT gauge for the breaking in of a new cylinder. NOTE: it is a good idea to get a back up thermocoupler lead to reach the furthest cylinder if it is the break-in cylinder.
Here is what I put in my log book for the addition of a CHT gauge:
THIS IS WHAT I WROTE IN LOG BOOK: minor mod installation of FAA TSO-c43a approved (westberg Mfg Inc.) Model K29PX, s/n 25257 (gauge) & p/n 713-7D, s/n 4308 (sensor lead) using the following parts:
(4) MS21919WCJ-12 adel clamps, (5) MS21919WCJ-2 adel clamps, (2) grommets AN931-2-4, AN931-2-13; (4) AN3-3 bolts; (5)AN960-10 washer; (5) AN3-11 bolt; (5) MS21044N3 nuts; 7/16 elec standoff; (2)11-04425 raychem red buttsplice; jumper wire - MS22759 / 16-18; (2) MS25036-102 ring terminal
Acceptable data: Installation was performed per gauge manufacturers instructions (form # 17780Z, dated 2/90) and advisory circular 43.13-1b/2b. Installation of cyl head temp gauge is approved per aircraft type certification, reference: Full Blind Flight Instrument panel kit installation. This is a minor mod per FAR 21.93a. Light load calculated per 43-13-1b chapter 11. wire clamping also per 43-13-1b chapter 11
Minor mod installation of Westach K29PX CHT gauge and 713-7D sender. Installed CHT gauge FAA TSO-c43a approved (westberg Mfg Inc.) Model K29PX, s/n 25257 (gauge) & p/n 713-7D, s/n 4308 (sensor lead). Insatlled Bayonett style thermocoupler lead installed on #2 (aft RH) cylinder. CHT guage is marked w/ red line @ 445 degrees(per Franklin Engine type certificate, NOTE 1). Updated Flight Manual, weight & balance and equipment list with gauge specs. Light wire picked up at light wire junction for pwer and grnd.