the equivalent of 90 degree turn on a head bolt is a right angle, 1/4 a circle
It is important to know the head bolt tightening sequence and the torque of a vehicle. For the Fiat Punto it is 20nm, 30nm, 90 degree turn, 90 degree turn, then in order 8,6,2,5,10,7,3,1,4,9.
EA and EB 6 cylinder head bolt torque is 40nM or 29 ft/lb PLUS a quarter turn or 90 degree turn after initial torquing.
you better get a chiltons book to get the torques and sequence
An allen bolt is a bolt with a head that requires an allen key to turn it.
15 lbs. Sequence: 90 degree trun, the another 90 degree turn( for a total of 180 degrees)
head bolt torque specs 3 steps first torque to 12.7 to 16.2 second 90degree turn third another 90 degree turn. head bolt pattern intake side 8 4 1 5 9.exhuastside 7 3 2 6 10.
25360 = 70*360 + 160 So 25360 degrees is equivalent to a 160 degree turn.
Imagine the head bolt is the dial on a clock. The distance between minute marks is 6 degrees. So to turn it 73 degrees you would start at 12 and turn it to 12 1/2 minutes.
You fit the end over the bolt head and turn . - Clockwise to tighten.
Imagine the head bolt is the dial on a clock. The distance between minute marks is 6 degrees. So to turn it 73 degrees you would start at 12 and turn it to 12 1/2 minutes.
This gun has a 2 piece bolt - the back of the bolt with the handle and locking rib is separate from the bolt head and extractor. These two parts must be split in order to get the bolt out. This is easy. Open the bolt and pull back until the rear of the bolt rib is in line with the back of the receiver. Turn down the rib 90 degrees to the right. Pull the bolt straight out. You will leave the bolt head still in the receiver. Pick up the bolt head and re-attach it to the bolt head by slipping it over the firing pin and turning the rear rib back into the vertical position. Reverse the operation to re assemble the bolt. (take off the bolt head - insert rear of bolt into receiver - add the front end with extractor lying on the receiver bed - turn rib to the top again.
To remove a stripped bolt head, you can try using a rubber band, a hammer and chisel, a screw extractor tool, or a drill. Place the rubber band over the bolt head and use a screwdriver to grip and turn it. Alternatively, you can use a hammer and chisel to create a new groove for a screwdriver. A screw extractor tool can also be used to grip and turn the bolt. If all else fails, you can drill into the bolt head and use a screw extractor to remove it.