Crankshaft & Main Bearing Service
- Drain oil pan and remove engine as previously described. Place engine upside down on engine stand. Remove oil pan, oil strainer, timing chain and sprockets. Remove flywheel and engine rear plate. Remove spark plugs to allow easy turning of crankshaft.
- Remove connecting rod bearing caps and bearings. Keep bearings in order for correct replacement. Remove main bearing caps complete with bottom bearing halves. Caps and their respective bearings should be kept together.
- Remove threaded plug from rear bearing cap oil return pipe and remove pipe. Each bearing cap is stamped with a number and this number is also stamped on web of crankcase near bearing cap. The bottom halves of the thrust washers are removed with center main bearing cap.
- Remove crankshaft, two remaining halves of thrust washers, and top halves of main bearings from crankshaft. Bearings, both main and connecting rod, are available in 0.010" (.25 mm), 0.020" (.508 mm), 0.030" (.76 mm) and 0.040" (1 mm) undersizes for 1098 cc engine only. The crankshaft for the 1275 cc engine may only be ground to 0.010" (.25 mm) under-size without heat treatment.
- To install crankshaft or bearings, reverse removal procedure making sure that thrust washers are placed with oil grooves outward and bearings are lubricated and placed into notched recesses machined in bearing cap. When installing rear main bearing cap, coat mating surfaces with Hylomar Jointing Compound.