Service Limit

Make a measurement as follows. If it exceeds the specified service limit, replace the parts with new ones.

CAUTION:

Fix oil pump on a vise to make a measurement. At this time, hold oil pump with the least possible force between two wood pieces.
Do not set outside of flow control valve or pulley on a vise; otherwise outside or pulley might be deformed. Select properly sized wood pieces.

Play of pulley shaft
On condition:
1. P: 9.8 N (1.0 kg, 2.2 lb)
Service limit:

Radial play (Direction <-->)
1. 0.4 mm (0.016 in) or less
  
  Fig 1: Checking Radial Play
  
  Axial play (Direction <-->)
  1. 0.6 mm (0.024 in) or less
  Fig 2: Checking Axial Play
2. Ditch deflection of pulley
  Service limit:
  1. 1.0 mm (0.039 in) or less
  NOTE: Read the value for one surface of V ditch, and then the value for another off the dial.
  
  Fig 3: Checking Ditch Deflection Of Pulley
3. Resistance to rotation of pulley
4. Service limit:
  1. Maximum load; 9.22 N (0.94 kg, 2.07 lb) or less
  NOTE:
  - A rather higher value may be indicated when pulley starts turning.
  - Measure the load during rotation and make a judgment.
  Fig 4: Checking Resistance Rotation Of Pulley