Oil Pump Inspection: Notes

Reference: OIL PUMP DISASSEMBLY AND ASSEMBLY 

• Check outer rotor (3), inner rotor and oil pump cases (1), (2) for excessive wear or damage.

  If abnormal condition is found in above checks, replace oil pump assembly.

• Check relief valve (4) for excessive wear or damage.

  If abnormal condition is found in above checks, replace oil pump relief valve set.

  Fig 1: Inspecting Oil Pump

  Courtesy of SUZUKI OF AMERICA CORP.
• Measure free length and tension of oil relief spring.

  If the measured values of length or tension is less than the specification, replace oil pump relief valve set.

  Oil relief spring 

  OIL RELIEF SPRING SPECIFICATION
  
  

  Item	Standard
  Spring free length	63.5 mm (2.5 in.)
  Spring preload	85.0 N for 52.0 mm (8.5 kg for 52.0 mm, 19.0 lb/2.05 in.)

  Fig 2: Checking Free Length And Tension Of Oil Relief Spring

  Courtesy of SUZUKI OF AMERICA CORP.
• Measure clearance of oil pump rotor and oil pump case.