Leakage Analysis Checklist
 
Customer: Phone
Email Miles/Hours Application:
Seal Application:
Step 1      Inspect the seal application before removal
Amount of Leakage Slight Seal Area Damp Heavy Leakage
Condition of Area Clean Dusty Mud Packed
Leakage Source
Between Lip & Shaft Between OD & Bore
At Retainer Gasket Between Elements of Seal
At Retainer Bolt Holes Between Wear Sleeve & Shaft
Step 2      Wipe area clean and inspect
Check Conditions Found Nicks on Bore Chamfer Seal Loose in Bore
  Seal Cocked in Bore Seal Case Deformed
  Seal Installed Improperly Paint Spray on Seal
  Shaft to Bore Misalignment Other
Step 3      Rotate shaft if possible
Check Conditions Excessive End Play Excessive Runout
Step 4      System Information
Application Pressure Est. Operating Temp. RPM Level
Sump Level Full 3/4 Full 1/2 Full 1/4 Full
Step 5      Mark the seal at the 12 o'clock position & remove it carefully
Retain an oil sample
Step 6      Inspect the application with seal removed
Check Conditions Found Rough Bore Surface Flaws or Voids in Bore
  Shaft Clean Shaft Corroded
  Cooked Lube on Shaft Shaft Discolored
  Shaft Damaged Shaft Grooved
Step 7      Inspect the seal
Primary Lip Condition Normal Damaged (Nicks) Hardened (Stiff)
  Soft (Flexible) Excessive Wear Eccentric Wear
Seal OD Normal Axial Scratches Damaged Rubber
Spring In Place Missing Separated Corroded








Tobar, Inc. P.O. Box 1907 · 3315 N. Scott Dr. · Columbus, IN 47201
  phone (812) 375-0400 · fax (812) 375-0404 · Contact Tobar