Kaitaia and Ahipara fire appliances and Kaitaia's water tanker had a steep climb to reach an excavator at Pukepoto Quarries on Saturday.
The machine, which was well ablaze by the time the first crew arrived, was near the top of the quarry face, the drivers following the zig-zagging internal road to reach it.
It was the engine that was burning, deputy Chief Fire Officer Ross Beddows said, adding that it had taken about 20 minutes to extinguish it.
That incident was part of a busy couple of days for the Kaitaia brigade, which responded to four alarms on Friday, starting with a 3.45am car fire on SH10 just outside Awanui. There was nothing left to save by the time the crew arrived.
Four hours later two appliances responded to an alarm at Juken NZ's triboard mill in Kaitaia, but were not needed, the alarm having been activated by a fall in pressure in the sprinkler system.