Another suggestion.

http://www.interglot.nl/woordenboek/es/en/vertaal/tren de ro...

http://promina.cl/conten/03products1.html

English version of CAT site:
http://www.cat.com/cda/layout?f=322546&m=40160&x=7
Spanish version of the same (here referred to as 'tren de rodaje'):
http://www.venequip.com/repuestos/tr_so.php

"What You Will Learn

Workplace Safety
Diesel Engines
Hydraulic Systems
Blades, Buckets and **Undercarriages**
Brake Systems
Electrical Systems
Vehicle Service
Welding and Cutting
Shop Practice
Workplace Essential Skills"
http://www.nbcc.ca/en/home/programs_and_courses/programsearc...

http://www.cashmanequipment.com/Protecting-Your-Undercarriag...

drive train

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Note added at 2 hrs (2011-09-13 14:49:48 GMT)
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Drivetrain - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Drivetrain - CachedDrivetrain may refer to: Powertrain, the group of components in a motor vehicle that generate power and deliver it to the road surface; Bicycle drivetrain systems, ...
Powertrain - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Powertrain - CachedFor bicycle drivetrain, see Bicycle drivetrain systems. ... In a wider sense ...
Show more results from wikipedia.org
Drivetrain
www.drivetrainpower.com/ - CachedDrivetrain Power and Propulsion. ... Drivetrain To Exibit at AIMEX 2011. On September 6-9, Drivetrain Power and Propulsion will be exhibiting its range ... More ...
How It Works: The Drivetrain - Popular Mechanics
www.popularmechanics.com/cars/how-to/repair.../1302716 - Cached14 Dec 2004 – In fact, the drivetrain may be the least understood part of a vehicle. New innovations in four-wheel and all-wheel drive have only made that ...
Drivetrain.com
www.drivetrain.com/ - CachedOnline catalog offering axles, drivelines, gears, rear ends, performance-improving products for cars and pickups, and troubleshooting help.
Train Driving Game : Inokashira Line Simulator 2 Online [ENGLISH]
www.realrailway.com/en/ino2/ - CachedDriving mode : The main mode of this game. you can drive the train. Replay : Playback of last driving. Passenger mode : You can ride and see on other network ...

Saludos
eski :))