caterpillar 268b drive chain adjustment with Loegering VTS rubber track Undercarriage

I have a Caterpillar 268b with a bolt on Loegering VTS system.
I replaced drive chains a year or so ago.
Machine has done well.
After putting on new rubber tracks I noticed some slop and pop in left hand side.
Being Cautious...I decided to remove the VTS system from left side to check chains. Chains seem ok so far.
They need adjusted.

I can figure out how to tension the axle...in this case I am using a cum-a-long pulling from the rear against axle. and for front axle i will pull from...

caterpillar 268b drive chain adjustment with Loegering VTS rubber track Undercarriage

caterpillar 268b drive chain adjustment with Loegering VTS rubber track Undercarriage