TFE731 Summer 2005

• New ECTM Version 5.2
• ECTM N1 DEEC “SHV” Commands
• Oil Leaking from Breather Pressurization Valve (BPV)

New ECTM Version 5.2

— Lanny Renshaw

ECTM 5.1 has been upgraded for compatibility with Windows 2000, ME and XP. The new ECTM software version is ECTM 5.2. ECTM 5.2 also supports “non-standard” serial (com) ports, such as USB-to-serial adapters or PCMCIA card-to-serial adapters. ECTM 5.2 is available on the e-Engines website (www.e-engines.honeywell.com) by selecting the “Software Downloads” menu after login. New ECTM kits will include ECTM 5.2 software. Many newer laptop PCs do not provide a “standard” serial (com) port. In this case, either a USB-to-serial adapter or PCMCIA card-to-serial adapter may be used. The following are recommended by Honeywell:

• USB-to-serial adapter: ioGEAR, GUC232A (www.iogear.com)
• PCMCIA card-to-serial adapter:Socket, SL0700-004 (www.socketcom.com)

Both of these adapters are compatible with ECTM 5.2, and allow use of existing DEEC download cables. Also, all programs requiring port communications such as networking or fax modem programs must not share the same COM port as the ECTM program. Sharing the COM port will result in communication error with the N1 DEEC.

ECTM N1 DEEC “SHV” Commands

— Lanny Renshaw

“SHV” refers to “Show Value” and can be used to troubleshoot engines, LRUs and engine indicators. To do so, have the DEEC on line and the laptop hooked up to the DEEC download port and in most cases, engines running. Once the ECTM program is up and running, go to the “DEEC HHT COMMUNICATION” menu and press enter. At the prompt “>,” type in “SHV N1_PCT” and a real time N1 in a percentage will be given. This will fluctuate and if the enter key is pressed, it will freeze so it can be read and compared to what the indicator is reading. There is a wide variety of parameters that can be viewed. In the ECTM program, go to the HELP file at the top and then INDEX, SYSTEM SPECIFICATIONS and then finally HHT DEEC SYSTEM VARIABLE. Utilizing the HELP file is the best resource to get the most from the ECTM program.

Oil Leaking from Breather Pressurization Valve (BPV)

— Lanny Renshaw

There have been some issues where oil is leaking out of the BPV causing a huge mess on the hangar floor. One possibility is a defective oil tank which has a crack in one of the internal service tubes. This can eventually leak through the oil pump, fill the accessory gearbox and then leak out the BPV. To determine if the tank is defective, mark the oil level on the tank (DO NOT DRAIN OIL). Remove the oil scavenge and supply tubes that go between the oil tank and oil pump. Also remove the oil tank vent tube that goes to the accessory gearbox. These three tubes will have only residual oil. If oil does begin to leak from one of these tubes after a period of time, your oil tank is defective and needs to be replaced. If you do not have a defective oil tank, contact Lanny Renshaw at 800.228.4277 ext. 4246 for further instructions.

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