Cessna 170
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Commercial; Flight Crew Flight Instructor
Flight Crew Last 90 Days 25; Flight Crew Total 1200; Flight Crew Type 25
Troubleshooting; Workload; Confusion; Training / Qualification
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Took Evasive Action; Flight Crew Became Reoriented; General Maintenance Action
Human Factors; Aircraft; Procedure
At touchdown at dusk in calm conditions the aircraft ground looped to the right at the intersection of Taxiways C and D and Runway 31.  The airplane did not strike the pavement and I did not suspect any damage.   I taxied to the ramp to further inspect the airplane before taxing to the hangar.   When the tail wheel was lifted off the ground it cocked to the right due to uneven tail wheel tension springs.   I just recently bought the airplane and further research showed that the tail wheel tension springs were the wrong size and not properly installed per [the] instructions.  I have purchased the correct hardware and replaced all improperly installed parts.
After ground looping a C170B; the pilot discovered the tailwheel tension springs were the incorrect part and not properly installed. The previous owner's errors were corrected.