Kawasaki Ninja Service Manual: Connecting Rod Bend Inspection

Kawasaki Ninja Service Manual / Crankshaft/Transmission / Crankshaft and Connecting Rods / Connecting Rod Bend Inspection

Remove the connecting rod big end bearing inserts, and reinstall the connecting rod big end cap.
Select an arbor [A] of the same diameter as the connecting rod big end, and insert the arbor through the connecting rod big end.
Select an arbor of the same diameter as the piston pin and at least 100 mm (3.94 in.) long, and insert the arbor [B] through the connecting rod small end.
On a surface plate, set the big-end arbor on V block [C].
With the connecting rod held vertically, use a height gauge to measure the difference in the height of the arbor above the surface plate over a 100 mm (3.94 in.) length to determine the amount of connecting rod bend.

If the connecting rod bend exceeds the service limit, the connecting rod must be replaced.

Connecting Rod Bend Service Limit: TIR 0.2/100 mm (0.008/3.94 in.)

Connecting Rod Bend Inspection

Crankshaft/Connecting Rod Cleaning

After removing the connecting rods from the crankshaft, clean them with a high flash-point solvent. Blow the crankshaft oil passages with compressed air to remove any foreign particles or res ...

Connecting Rod Twist Inspection

With the big-end arbor [A] still on V block [C], hold the connecting rod horizontally and measure the amount that the arbor [B] varies from being paralleled with the surface plate over a 100 ...

Other materials:

Water Temperature Sensor Inspection
Remove the water temperature sensor (see Water Temperature Sensor Removal/Installation in the Fuel System (DFI) chapter). Suspend the sensor [A] in a container of coolant so that the temperature-sensing projection [C] is submerged. Suspend an accurate thermometer [B] with temperature ...

Piston Ring Groove Width Inspection
Measure the piston ring groove width. Use a vernier caliper at several points around the piston. Piston Ring Groove Width Standard: Top [A] 0.82 0.84 mm (0.0323 0.0331 in.) Second [B] 0.82 0.84 mm (0.0323 0.0331 in.) Service Limit: 0.92 mm (0.036 in.) Second 0.92 mm (0.036 in.) ...

Balance Inspection
Remove the front and rear wheels (see Front/Rear Wheel Removal). Support the wheel so that it can be spun freely. Spin the wheel lightly, and mark [A] the wheel at the top when the wheel stops. Repeat this procedure several times. If the wheel stops of its own accord in various positi ...