TORQUE CONVERTER GP 1T1740 - Caterpillar

Ensure that the valve spring is compressed squarely or damage to the valve stem may occur.
Follow Steps 2.a through 2.d to position the appropriate piston at top dead center.
Install Tooling (A) in position on the cylinder head to compress a valve spring (11) for the appropriate piston.
Use Tooling (A) to compress valve spring (11) and open the valve slightly. Note: Do not compress the spring so that the valve spring retainer (10) touches the valve stem seal.
Rotate the crankshaft carefully, until the piston touches the valve. Note: Do not use excessive force to turn the crankshaft. The use of force can result in bent valve stems.
Continue to rotate the crankshaft and gradually release the pressure on Tooling (A) until the piston is at the top dead center position. The valve is now held in a position that allows the valve spring to be safely removed. Note: Valve springs must be replaced in pairs for the inlet valve or the exhaust valve of each cylinder. If all valve springs require replacement the procedure can be carried out on two cylinders at the same time. The procedure can be carried out on the following pairs of cylinders. 1 with 6, 2 with 5 and 3 with 4. Ensure that all of the valve springs are installed before changing from one pair of cylinders to another pair of cylinders.
Do not turn the crankshaft while the valve springs are removed.
Apply sufficient pressure to Tooling (A) to allow removal of valve keepers (8). Note: Do not compress the spring so that valve spring retainer (9) touches the valve stem seal.Remove valve keepers (9).
Slowly release pressure on Tooling (A).
Remove valve spring retainer (10) and remove valve spring (11).
If necessary, remove the valve stem seals.
Repeat Steps 3 through 6 to remove the remaining valve springs from the appropriate cylinder.
Remove Tooling (A). Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Do not turn the crankshaft while the valve springs are removed.
Plug the apertures for the push rods in the cylinder head in order to prevent the entry of loose parts into the engine
Illustration 3 g03365330
Typical Example
If necessary, install a new valve stem seal onto the valve guide. Note: The outer face of the valve guide must be clean and dry before installing the valve stem seal.
Install valve spring (11) onto the cylinder head. Position valve spring retainer (10) on valve spring (11).
Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Ensure that the valve spring is compressed squarely or damage to the valve stem may occur.
Install Tooling (A) in the appropriate position on the cylinder head in order to compress valve spring (11).
Apply sufficient pressure to Tooling (B) in order to install valve keepers (9). Note: Do not compress the spring so that valve spring retainer (10) touches the valve stem seal.Install the valve spring keepers.
Carefully release the pressure on Tooling (A).
Repeat step 1 through step 5