In Dark Cloud 2, there are four work cranes located on the third floor of the Gundorada Workshop.
Gundorada Workshop is huge. It has three floors. The time gate is on the 1st floor. The workshop buildings are on the opposite side from the time gate. They are sort of U-shaped.
In order to make it easier to describe power-up item locations, see illustration below (courtesy of FAQ/Walkthrough Version 1.20 By Sky Render):
3rd Floor: G1 C1 G2 F1 G3 C2 G4 E1 OR OR G5 C3 G6 E2 G7 C4 G8
2nd Floor: G1 A1 G2 P1 G3 A2 G4 E1 G5 P2 GP A3 G6 E2 G7 A4 G8
1st Floor: G1 P1 G2 P2 G3 P3 GW E1 G4 P4 GT P5 G5 E2 G6 P6 G7
JW JN JE
CODE
A - Work Arms
C - Work Cranes
E - Elevators
F - Fenced-off areas
G - Gates
GW - G-WEAPONS
GT - G-TOOLS
GP - G-PARTS
JE - Jump Gate East
JN - Jump Gate North
JW - Jump Gate West
OR - Operations Room
P - Pillars
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Good News: Dark Cloud 2 is now available on PlayStation, Sony has confirmed. Guests of the latest episode of the PlayStation Blogcast dropped the news that the follow-up to Dark Cloud would be launching on the console. Read more Polygon.com.