![]() I was surprised to then receive a letter from the post office expressing regret that my package had been damaged during shipment and to please retain the damaged packaging while they investigate. I let CPS know exactly what the problem was, sending them a photo of the offending part, and they sent a new kit without question or delay. Just find TDC and pressurize cylinder to 80 psi. I have no idea how well it works yet as a tester as I did not have a spare month to wait around with my airplane out of service. Static test your Rotax 912 cylinder compression with 80 psi shop air. No.: 40.40.31) Complete set with various threaded adapters, adapters. They really should charge a few bucks more and supply two separate hoses, with spark plug adapters pre-installed, one 12 mm and the other 18 mm. Compression tester for diesel motors, suitable for almost all diesel engines - 00491. The next job will be to try to make a leak-proof connection, using Teflon plumbers tape, between the flex hose and the 12 mm spark plug adapter, which is a machined section of bar stock with no flats to accept a wrench and will therefore need a padded pair of pliers to hold it tight enough to apply enough torque to tighten without crushing it. Spent the next hour carefully removing the cement from the brass threads on the end of the flex hose, then a couple of minutes filing the sharp edges cut into the flats with the vice grip. CPS sent another complete tester, and I very carefully used vice grips to hold the brass nut while removing the 18 mm adapter, to find that the threads had been cemented together (presumably to eliminate leakage) by a hard-setting cement. The soft brass nut on the flex hose immediately rounded off as it was so tight. Bought for use on Rotax, so the first thing I did was to attempt to remove the 18 mm spark plug adapter that comes pre-installed on the flex hose. AZUNO Compression Tester Automotive, Digital Compression Gauge 200 PSI for Petrol Engine Cylinder Compression Tester Kit with Adapter & Hose 4.5 out of 5 stars 843 26.99 26.
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