NOTE 11.  PRODUCT WARRANTY LIABILITY

We charge the estimated costs of warranty programs, other than product recalls, to income at the time products are shipped to customers.  We use historical claims experience to develop the estimated liability.  We review product recall programs on a quarterly basis and, if necessary, record a liability when we commit to an action, or when they become probable and estimable, which is reflected in the provision for warranties issued line.  We also sell extended warranty coverage on several engines.  The following is a tabular reconciliation of the product warranty liability, including the deferred revenue related to our extended warranty coverage and accrued recall programs:

Warranty related deferred revenue, supplier recovery receivables and the long-term portion of the warranty liability on our June 30, 2013, balance sheet were as follows: