Disassembly
- Remove bolt securing oil pick up strainer, remove strainer and discard "O" ring. (Scheme 189)
- Using sequence shown, remove 8 M8 bolts securing lower crankcase to cylinder block. (Scheme 190)
- Remove remaining M8 bolt and 2 M6 bolts securing lower crankcase to cylinder block.
- Remove lower crankcase.
- Using sequence shown, remove and discard 16 bolts securing bearing ladder to cylinder block. (Scheme 191) NOTE: Short length bolts are fitted to the outer edge of the bearing ladder.
- Release bearing ladder from dowels and remove from cylinder block.
- Remove main bearing shells and 2 thrust washer halves from bearing ladder, keep main bearing shells in fitted order; discard thrust washers. (Scheme 192)
- Temporarily fit crankshaft pulley bolt. (Scheme 193)
- Remove 4 dowel bolts and remove big end bearing caps from No. 1 and No. 2 connecting rods. Keep bearing caps in order. CAUTION: Do not remove cylinder clamps LRT-12-144 unless pistons and connecting rods are to be removed. NOTE: Number stamped below bearing cap bolt is bearing bore size code. Number stamped on connecting rod is cylinder number and letter is weight code.
- Release connecting rods from crankshaft.
- Remove bearing shells from connecting rod and cap.
- Rotate crankshaft using pulley bolt, remove bolts securing remaining connecting rod bearing caps. Remove bearing caps and bearing shells from caps. Keep bearing caps in their fitted order.
- Remove crankshaft, remove main bearing shells and thrust washers from cylinder block. Discard thrust washers.
- Main bearings - selection: record main bearing code letters from front face of cylinder block. Reading from left to right, the first letter relates to No. 1, (front) main bearing journal. (Scheme 194)
- Record main bearing code numbers, located on the crankshaft rear web. The first number, reading left to right, relates to number one main bearing journal. (Scheme 195)
