REGULATOR AS-VOLTAGE 9G7567 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1860 Retaining Ring Pliers 1
B 9U-6195 Valve Spring Compressor 1
268-1969 Adapter 1
276-1221 Head 1 Start By:
Remove the rocker shaft assembly. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: The following procedure should be adopted in order to remove the valve springs when the cylinder head is installed to the engine. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install" for the procedure to remove the valve springs from a cylinder head that has been removed from the engine.Note: Ensure that the appropriate piston is at top dead center before the valve spring is removed. Failure to ensure that the piston is at top dead center may allow the valve to drop into the cylinder bore.
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Plug the apertures for the push rods in the cylinder head in order to prevent the entry of loose parts into the engine.
Illustration 1 g01335929
Follow Steps 1.a through 1.h in order to remove the harness assemblies for the electronic unit injectors.
Place a temporary identification mark on connections (1) for harness assembly (4) for electronic unit injectors (2).
Use a deep socket to remove connections (1) from electronic unit injectors (2).
Cut cable straps (3).
Disconnect plug (7) from harness assembly (4).
Use Tooling (A) to remove retaining ring (5).
From the outside of valve mechanism cover base (8), push harness assembly (4) inward. Withdraw the harness assembly from the valve mechanism cover base.
Remove O-ring seal (6) from harness assembly (4).
Repeat Steps 1.a through 1.g in order to remove the remaining harness assemblies.
Illustration 2 g01335931
Ensure that the valve spring is compressed squarely or damage to the valve stem may occur.
Follow Steps 2.a through 2.d in order to position the appropriate piston at top dead center.
Install Tooling (B) in position on the cylinder head in order to compress a valve spring (11) for the appropriate piston.
Use Tooling (B) in order 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: 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 (B) 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