20412169 Volvo.Penta Engine heater

start by:a) remove oil pan1. The main bearing caps are installed with the part number toward the front of the engine. Each cap has a number on the bottom of the cap which is the same as the number on the camshaft side of the cylinder block. 2. Remove the bolts that hold main cap (1). Remove bearing cap (1) and the lower half of the main bearing.3. Remove the bearing from the cap. 4. Turn the crankshaft until tool (A) can be installed in the oil hole in the crankshaft journal. Install tool (A). Turn the crankshaft in the direction which will push the upper main bearing out, tab end first.
If the crankshaft is turned in the wrong direction, the tab of the bearing will be pushed between the crankshaft and the cylinder block. This will cause damage to the crankshaft and block.
Install the bearings dry when the clearance checks are made. Put clean engine oil on the bearings for final assembly.5. Install the lower bearing in the bearing caps. Install upper bearings (bearing with the oil hole) in the cylinder block with tool (A).
When bearing caps are installed, make sure the caps are installed with the part number toward the front of the engine and the number on the bottom of the cap is the same as the number on the camshaft side of the engine.
When the bearing clearance is checked and the engine is in a vertical position, such as in the vehicle, the crankshaft will have to be lifted up and held against the upper halves of the main bearings to get a correct measurement with Plastigage (B). The Plastigage will not hold the weight of the crankshaft and give a correct indication. If the engine is in a horizontal position, such as on an engine stand, it is not necessary to hold the crankshaft up. Do not turn the crankshaft when Plastigage (B) is in position.7. Check the bearing clearance with Plastigage (B) as follows: a) Put Plastigage (B) and cap (1) in position and install the bolts. Tighten the bolts to a torque of 120 10 lb.ft. (160 14 N m).b) Remove the bearing cap and measure the thickness of the Plastigage. The main bearing clearance must be .0030 to .0066 in. (0.076 to 0.168 mm). The maximum permissible clearance is .010 in. (0.25 mm). 8. Put clean SAE 30 oil on the main bearings. Put bearing cap (1) and the lower half of main bearing (2) in position on the engine.a) Put 2P2506 Thread Lubricant on the bolt threads and install the bolts.b) Tighten the tab end bolts to 45 4 lb. ft. (61 6 N m).c) Tighten the opposite end bolts to 45 4 lb. ft. (61 6 N m).d) Turn the opposite end bolts 60 5°.e) Turn the tab end bolts 60 5°.9. Do Steps 1 through 9 for the remainder of the bearings. When a replacement of the thrust plates on No. 3 main bearing is made, install the thrust plates with the identification "BLOCK SIDE" next to the block. 10. Check the crankshaft end play with tooling (C). The end play is controlled by the thrust bearing on No. 3 main bearing. The end play with a new bearing must be .0025 to .0190 in. (0.064 to 0.483 mm). The maximum permissible end play for used bearings is .035 in. (0.89 mm).