Crankshaft Thrust Play

Measure this play with crankshaft set in cylinder block in the normal manner, that is, with thrust bearing and journal bearing caps installed. Tighten crankcase bolts gradually as follows.

1. Tighten all bolts to 42 N.m (4.2 kg-m, 30.5 lb-ft) according to numerical order in Fig 1.
2. Loosen all bolts until tightening torque is reduced to 0 in reverse order of tightening.
3. In the same manner as in Step  1, tighten them to 42 N.m (4.2 kg-m, 30.5 lb-ft).
4. In the same manner as in Step  1 again, tighten them to 60 N.m (6.0 kg-m, 43.5 lb-ft).
   NOTE: Tighten 10 mm (0.39 in.) thread diameter bolts first (following the order ("1" - "16") shown in Fig 1), then tighten 8 mm (0.31 in.) thread diameter bolts.

Tightening torque 

Crankcase bolt (10 mm (0.39 in.) thread diameter) (a): Tighten 42 N.m (4.2 kg-m, 30.5 lb-ft), 0 N.m (0 kg-m, 0 lb-ft), 42 N.m (4.2 kg-m, 30.5 lb-ft) and 60 N.m (6.0 kg-m, 43.5 lb-ft) by the specified procedure Crankcase bolt (8 mm (0.31 in.) thread diameter) (b): Tighten 27 N.m (2.7 kg-m, 19.5 lb-ft) by the specified procedure 

Fig 1: Tightening Bolts In Sequence

Courtesy of SUZUKI OF AMERICA CORP.

Use a dial gauge to read displacement in axial (thrust) direction of crankshaft.

If its limit is exceeded, replace thrust bearing with new standard one or oversize one to obtain standard thrust play.

Crankshaft thrust play

Standard: 0.10 - 0.35 mm (0.0040 - 0.0137 in.) 

Limit: 0.38 mm (0.0150 in.) 

Fig 2: Measuring Displacement In Axial (Thrust) Direction Of Crankshaft Using Dial Gauge

Courtesy of SUZUKI OF AMERICA CORP.

Thickness of crankshaft thrust bearing

Standard: 2.500 mm (0.984 in.) 

Oversize (0.125 mm (0.0049 in.)): 2.563 mm (0.1009 in.) 

Fig 3: Measuring Thickness Of Crankshaft Thrust Bearing

Courtesy of SUZUKI OF AMERICA CORP.