Caterpillar 3406E Marine Engine — Rocker Arm and Shaft - Install
Installation · Rocker arm shaft
For the Caterpillar 3406E Marine Engine, from the Caterpillar service manual.
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Before you start
- Valve rocker arms and unit injector rocker arms can move on the shaft after the bolts have been removed. The shaft should be kept level when removed from the cylinder head. To avoid possible personal injury, keep fingers clear of the valve rocker arms and the unit injector rocker arms when lifting the assembly from the cylinder head.
- Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.
Procedure
- Install rocker shaft (3), valve rocker arms (1), and unit injector rocker arms (4) as a unit with Tooling (A).
- Install bolts (2). Tighten bolts (2) to a torque of 109 ± 15 N·m (80 ± 11 lb ft).
- Repeat Steps 1 and 2 for the remainder of the rocker arm assemblies.
Tools required
- 124-2946 Lifting Bracket Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Bolt torque: 109 ± 15 N·m (80 ± 11 lb ft)
- Install rocker shaft (3) with the flat side facing upward.
- If the engine is equipped with a compression brake, skip Step 2.
Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.