The KD6s were modified after arrival in China, gaining larger cabs and new chimneys more suited to the generous Chinese loading gauge. Some locos were more extensively modified, such as KD6 487, pictured above, with JS style chimney cowling ing and smoke deflectors.
It's unclear how the locos were used during their first 40 years in China but, by the time western visitors started reporting sightings in the 1980s, most seemed to be employed in the coal industry in Manchuria. They were then old engines by Chinese standards and virtually all were retired by the early 1990s. Their replacements were often newly built SY class 2-8-2s. One loco, KD6 487 remained in service at Pingzhuang until the late 1990s.
Only two KD6 are known to survive although one is no longer a KD6. KD6 463 was shipped to the UK and restored to it's original state as USATC No 5197. The story of the other loco is a remarkable one. KD6 487 remained at Pingzhuang until late 2004, out of use and slowly deteriorating at the back of the electric depot. Then news began to emerge of a most unlikely plan. The loco was to go to Tiefa where it would be returned to working order and used on special trains. Nothing like this had been done in China before and many observers were sceptical. But it happened. In early 2005, KD6 487 returned to service on the Tiefa system and was used on a number of occasions. It has since been taken out of traffic and is now on display at the mining company’s museum at Daqing.
Vital Statistics
| Class Designation | KD6 |
| Descriptive Name | |
| Number Series | KD6 461 - 500 |
| Builders | ALCo, Baldwin, Lima |
| Building Dates | 1942 - 1945 |
| Number Built | 2100+ (40 to China?) |
| Boiler Pressure | 15.5 bar / 225 psi |
| Grate Area | 3.8 sq m |
| Total Heating Surface |
164 sq m |
| Superheater Area | 43.7 sq m |
| Wheel Arrangement | 2-8-0 |
| Driving Wheel Diameter |
1450 mm |
| Cylinders, Number | 2 (outside) |
| Cylinders, Diameter/Stroke | 483 mm x 660 mm |
| Valve Gear | Walschaerts |
| Tractive Effort | 121 kN |
| Power Output (Wheel Rim) |
|
| Maximum Speed | |
| Overall Weight | 125 t |
| Overall Length | 17.5 m |
| Coal Capacity | 10 t |
| Water Capacity | 24,500 l |


