Like any other inline six diesel engine (and most I6 gas engines, as well), 1-5-3-6-2-4. Doesn't matter if it's a 3406, 3406B, 3406C, 3406E, etc.
Adjust valve of 3406 engine
1-5-3-6-2-4
To find the idle adjust on a caterpillar 3406 engine refer to the owners manual. If this doesn't help, contact the manufacturer.
3406 C15 3208 3306
fuel pressure at idle, air to air after cooled 3406, caterpillar diesel engine
You can adjust the injection pump on your 3406 Caterpillar engine by turning the adjustment screw on the top of the fuel pump. The adjustment screw controls how much fuel the pump sense to the engine.
Like any other inline six diesel engine (and most gas ones, as well), it's 1-5-3-6-2-4
Engine speed sensor faulty. Dead battery or batteries. Loose or dirty battery connection. Dead spot on starter.
Diagnosis: Engine Won't Start or Run Check related link below
Camshaft gear, on your 3406 Caterpillar diesel engine, by using a car puller. You will need to remove the front engine cover in order to get at the gear.
1990 ford with caterpillar 3406,approximately4000 CCA
The oil drain plug torque is 65ft lbs
A 3406 Caterpillar diesel generator should not present any oil consumption. The generator could consume one quart of oil per 100 hours and not be considered unusual.