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Check if you have early type or later type head bolts. Early types have plain shanks, later types have a waist cut in them half way down. There are 10 bolts in both cases. Tighten early type bolts as follows: 1. Bolt 1 is the middle bolt on the carb side of the engine. Bolt 2 is the middle bolt across on the other side of the head. Bolt 3 is the one to the left of Bolt 1 and Bolt 4 is to the left of Bolt 2. Bolt 5 is to the right of Bolt 1 and Bolt 6 is to the right of Bolt 2. Bolt 7 is to the left of Bolt 3 at the back of the engine, with Bolt 8 to the left of Bolt 4 at the back of the engine. Bolt 9 is at the front of the engine to the right of Bolt 5 and bolt 10 is opposite that to the right of Bolt 6. Torque them all to 43 ft-lbs. 2. Go over all the bolts again in the same order as above and torque them up to 80 ft-lbs. 3. Warm the engine up fully and then let it cool down again completely. 4. Slacken off Bolt 1 by 30 degrees counterclockwise and then retighten to 80 ft-lbs. 5. Re-torque all remaining bolts to 80 ft-lbs. Later type bolts are easier, and done in the same order as the early ones. 1. Tighten initially to 15 ft-lbs. 2. Go over the bolts again in the same order and tighten to 45 ft-lbs 3. Go over the bolts a third time in the same order and tighten a further 1/4 turn (90 degrees). That's all.

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โˆ™ 2006-01-27 20:13:15
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Q: What is the torque and sequence for tightening the headbolts on a Volvo 240?
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