3116 and 3126 Truck Engines Inlet and Exhaust Valves – Remove and Install

Removal Procedure

Start By:

A.Remove the cylinder head assembly. Refer to Disassembly and Assembly, “Cylinder Head – Remove”.

Note: For information on the reusability of the inlet valves, the exhaust valves and the springs, refer to Guideline For Reusable Parts And Salvage Operations, SEBF8002, “Valves, Valve Springs, Valve Rotators, and Locks”, Guideline For Reusable Parts And Salvage Operations, SEBF8034, “Valve and Valve Spring Specifications”, and Guideline For Reusable Parts And Salvage Operations, SEBF8162, “Specifications to Measure and Salvage Cylinder Head Assemblies and Related Components”.

Note: The following components of the exhaust valves are different from the components of the inlet valves: spring retainer (2), valve spring (3) and valve (5).

1.Use Tooling (A) to compress valve spring (3). Remove retainer lock (1) .

2.Remove Tooling (A) .

3.Remove spring retainer (2). Remove valve spring (3) .

4.Remove valve seal (4) and valve (5) .

5.Repeat Steps 1 through 4 in order to remove the remaining inlet valves and exhaust valves.

Installation Procedure

Note: For information on the reusability of the inlet valves, the exhaust valves and the springs, refer to Guideline For Reusable Parts And Salvage Operations, SEBF8002, “Valves, Valve Springs, Valve Rotators, and Locks”, Guideline For Reusable Parts And Salvage Operations, SEBF8034, “Valve and Valve Spring Specifications”, and Guideline For Reusable Parts And Salvage Operations, SEBF8162, “Specifications to Measure and Salvage Cylinder Head Assemblies and Related Components”.

1.Lubricate valve (5) with clean engine oil. Install valve (5) in the cylinder head assembly. Install new valve seal (4) against the valve guide.

2.Place the following items on the valve stem: valve spring (3) and spring retainer (2) .

Note: A small amount of grease can be used to hold retainer locks (1) in position during installation.

3.Use Tooling (A) to compress valve spring (3). Install retainer lock (1) .

4.Repeat Steps 1 through 3 in order to install the remaining inlet valves and exhaust valves.
End By: Install the cylinder head assembly. Refer to Disassembly and Assembly, “Cylinder Head – Install”.