What order do you remove head bolts?


What order do you remove head bolts?

  1. Step 1: Drain the oil and coolant.
  2. Step 3: Remove valve cover.
  3. Step 1: Rocker arm and rocker removal.
  4. Step 2: Remove the pushrods.
  5. Step 3: Loosen head bolts.
  6. Step 1: Remove the timing cover.
  7. Step 3: Remove the timing belt.
  8. Step 4: Remove the head bolts.

How tight should head bolts be?

1. Tighten each bolt to 7-9 foot pounds of torque. 2, Tighten each bolt to 12-14 foot pounds of torque.

Do you have to remove head bolts in the proper sequence?

Step 4 – Loosen and Remove the Head Bolts Once the pushrods (for an OHV engine) or the timing belt (on an OHC engine) are out of the way, you can continue with the project. As such, you must remove (and later reinstall) the head bolts in the proper sequence to avoid damage to the cylinder head.

Do I need to drain oil before removing head?

Re: drain oil to remove heads? The oil does not have to be drained but it is usually a good idea to change the oil after any internal engine repairs. You could drain it first and reuse it possibly. Going “inside the motor won’t be fun because the crankcase has to be split to change the cam or crank.

How do you sequence torque?

Tightening sequence The first pass, lightly tighten the first bolt then move directly across or 180 degrees for the second bolt, then move1/4 turn around the circle or 90 degrees for the third bolt and directly across for the fourth. Continue this sequence until all bolts are tightened.

What is a bolt sequence?

Bolt tightening sequences are when an arrange of bolts are tightened in a pattern to the required torque. The sequence the bolts are tightened is a symmetrical pattern to reduce the amount of pre-load lost in a bolt, as a result of elastic interactions. Torque is normally applied to a bolt using a torque wrench.

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