Cummins 4BT – Cylinder Head – Installation

Position the cylinder head gasket over the dowels.

Carefully put the cylinder head on the cylinder block and seat it onto the dowels.
Cylinder Head Weight:
4 Cylinder – 36 Kg [80 lb]
6 Cylinder – 51.3 Kg [114 lb]

Push Rods – Installation
Position the push rods into the valve tappets.

Lubricate the push rod sockets with engine lubricating oil.

Rocker Levers – Installation
Lubricate the valve stems with engine lubricating oil.

14 mm, Flat Blade Screwdriver
Completely loosen the rocker lever adjusting screws.

NOTE: The rocker lever pedestals are aligned with dow­els.
Install the pedestals.

Inspect all cylinder head capscrews for proper length using Service Tool Part No. 3823921.
Lubricate the 8 mm pedestal capscrew threads and under the capscrew heads with engine lubricating oil.
Install the capscrews finger tight.

Lubricate the 12 mm pedestal/head capscrew bolt threads and under the capscrew heads with engine lubricating oil.
Install the capscrews finger tight.

Lubricate the threads and under the heads on the re­maining head capscrews with engine lubricating oil.
Install the capscrews finger tight.

Use the illustrated sequence to tighten the cylinder head capscrews.

13 mm
Tighten the 8 mm pedestal capscrews.
Torque Value: 24 N»m [18 ft-lb]

Valve Clearance – Adjustment
Adjust the valve clearance. Refer to Procedure (7-04).

10 mm
Install the manifold cover plate, fuel filter head, and intake heater.
Use the illustrated capscrews to secure the cover plate.
The remaining holes are used to secure fuel line brackets.
Torque Value: 24 N®m [18 ft-lb]

Install the injectors and fuel lines.

Install the exhaust manifold and turbocharger. Refer to Procedures (7-05) and (7-06).