Clarion Contractors completed the following transactions and events involving the purchase and operation of equipment in its business. 2010
Jan. 1 Paid $318,000 cash plus $12,720 in sales tax and $1,900 in transportation (FOB shipping point) for a new loader. The loader is estimated to have a four-year life and a $31,800 salvage value. Loader costs are recorded in the Equipment account.

Jan. 3 Paid $7,000 to enclose the cab and install air conditioning in the loader to enable operations under harsher conditions. This increased the estimated salvage value of the loader by another $2,100.

Dec. 31 Recorded annual straight-line depreciation on the loader.
2011
Jan. 1 Paid $4,800 to overhaul the loader's engine, which increased the loader's estimated useful life by two years.

Feb. 17 Paid $1,200 to repair the loader after the operator backed it into a tree.
Dec. 31 Recorded annual straight-line depreciation on the loader.

Required: Prepare journal entries to record these transactions and events.