Quest Minivan V6-2960cc 3.0L SOHC MFI (VG30E) (1993)
Crankshaft: Service and Repair
CAUTION: When installing sliding parts such as bearings and pistons, be sure to apply engine oil on the sliding surfaces. Place removed parts such
as bearings and bearing caps in their proper order and direction. When tightening connecting rod bolts and main bearing cap bolts, apply engine oil to
thread portion of bolts and seating surface of nuts.
Disassembly
PISTON AND CRANKSHAFT
1. Place engine on a work stand.
2. Drain coolant and oil.
3. Remove oil pan and oil pump.
4. Remove timing belt.
5. Remove water pump.
6. Remove cylinder head.
7. Remove pistons with connecting rods.
-
When disassembling piston and connecting rod, remove snap ring first, then heat piston to 60 to 70°C (140 to 158°F) or use piston pin
press stand at room temperature.
8. Remove bearing cap and crankshaft.
-
Before removing bearing cap, measure crankshaft end play.
-
Bolts should be loosened in two or three steps.
Inspection
PISTON AND PISTON PIN CLEARANCE
1. Measure inner diameter of piston pin hole "dp".
Standard diameter "dp":
20.969 - 20.981 mm (0.8255 - 0.8260 in).