Crank Mechanism

Fig 1: Measuring Radial Runout Using A Dial Indicator And Magnetic Holder

Courtesy of VOLVO CARS OF NORTH AMERICA.

Crankshaft

Main bearing journal radial runout........maximum 0.040 mm

Axial play (Measured in the engine with the intermediate section tightened)........0.08-0.19 mm

Main bearing journal radial runout........0.019-0.043 mm

Fig 2: Correct Values For Connecting Rod Bearing Journals And Main Bearing Journals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Big end journals

Diameter, standard 1........50.000 0/-0.016

Bearing recess width........26.0 0.1 mm

Maximum out-of-round........0.004 mm

Maximum taper........0.004 mm

1 The variation in diameter for each bearing journal must not exceed 0.008 mm.

Main bearing journals

Diameter, standard 1........65.000 +0.003/-0.016 mm

Axial bearing width........26.00 +0/-0.04mm

Maximum out-of-round........0.004 mm

Maximum taper........0.004 mm

1 The variation in diameter for each bearing journal must not exceed 0.008 mm.

Fig 3: Bearing Shells

Courtesy of VOLVO CARS OF NORTH AMERICA.

Connecting rods

Diameter, bearing recesses

Big end........53.00 -0/+0.013 mm

Small end........21.00 +0.005/+0.011 mm

Maximum ovality in the bearing recesses........0.006 mm

Length

Big end - Small end........147 mm

CAUTION:

If the cap is turned the wrong way and tightened, the structure of the fracture surface will be damaged and the connecting rod must then be discarded.

NOTE:

Blow the fracture surface clean using compressed air before reinstalling the cap.