Following info comes from Mega 12.
Here's another shot of Ecliptor.
Here's Moledriller.  
The 5 Rangers fought Moledriller. Pink, Blue, Yellow and Red fired their Blasters at him. Black went with using his Lunar Lance however Moledriller blocked it.
Here's a shot of Black facing Moledriller and Craterites.
The "Mega Tank" is used in this ep.
Here's Giant Moledriller.
Here's a shot of the Astro Megazord Cockpit but this time with Black in Red's Seat.
Heres' a shot of Moledriller and the Astro Megazord.
Here's a shot of the Astro Megazord Saber hitting Moledriller. This attack is what leads to his destruction even though he doesn't explode.