Fix or Upgrade Crank Set

[Vlerrie]

Hi, 

I'm a major newb to the mtn biking scene.

I bought a secondhand momsen Al329 and been having fun with it. It came with cleats installed, so I borrowed some pedals from a buddy, the pedals have been chilling in the garage for the past 5 years.

 

As I was riding the left side pedal ceased on the down stroke and ripped the entire threading out of the crank arm. 

 

I'm unsure with what I could do. Can someone fix it by rethreading, should I try to find a replacement crank set (seems to be very scarce). Or should I upgrade the crank set?

 

More Info:
Crank set is a Shimano Deore M522 Octalink

Groupset is Deore M6000 3x10

 

I would appreciate any advice.

 

[porqui]

A good bike shop can put an insert in.

 

Where are you based?

[dirtypot]

Which way did you thread in the left side pedal?  Clockwise or anti-clockwise? 

[Vlerrie]

A good bike shop can put an insert in.

 

Where are you based?

I'm in brits, close enough to Pretoria.

[Vlerrie]

Which way did you thread in the left side pedal?  Clockwise or anti-clockwise? 

Anti-clockwise (to the front of the bike)