Cummins N14 STC, Celect, Celect Plus – Service Manual 000-001   Engine Removal

NOTE: Place a tag on all hoses, lines, linkage, and electrical connections as they are removed to identify their locations on the engine.

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

WARNING  Coolant is toxic.  Keep away from children and pets. If not reused, dispose of in accordance with local environmental regulations.

Disconnect the batteries. Refer to the OEM service manual.

Drain the engine coolant. Refer to Procedure 008-018 in Section 8.

NOTE: If the coolant is

not
going to be used again, dispose of used coolant or antifreeze in accordance with federal, state, and local laws and regulations.

WARNING  To reduce the possibility of personal injury, avoid direct contact of hot oil with your skin.

Drain the lubricating oil. Refer to Procedure 007-025 in Section 7.

Disconnect the starting motor cable, the engine ground straps, the cab or chassis to engine hoses, the tubing, the electrical wires, and the hydraulic lines.

NOTE: Dispose of used oil in accordance with federal, state, and local laws and regulations.

Disconnect the intake and the exhaust air pipes.

Disconnect all chassis mounted “engine driven” accessories.

Disconnect the drive units from the flywheel.

NOTE: If the rear engine mounts are attached to the transmission, it may be necessary to remove the engine and the transmission as an assembly.

Most cab-over configuration vehicles will have the Cummins® factory installed rear engine lifting bracket still installed.

In installations such as short and medium nose conventional chassis, the factory installed rear engine lifting bracket is usually removed due to space constraints. In this case, the service rear engine lifting bracket, Part Number 3823920, will be required to remove the engine from the chassis.

The service rear engine lifting bracket, Part Number 3823920, consists of the bracket and eight 3/8-16×1-inch UNC (Grade 8) mounting capscrews and flat washers.

Use the following steps to install the service rear engine lifting bracket.

Remove the injector wiring harness.

Position the service lifting bracket, Part Number 3823920, over the rear rocker lever housing being careful not
to damage the injector wiring rocker lever housing pass through connectors.

Attach the left plate of the lifting bracket to the fuel pump side of the rear rocker lever housing. Install the four 3/8-16×1-inch UNC (Grade 8) mounting capscrews and washers.

CAUTION  If all fasteners are not installed and tightened to the correct torque value, the lifting bracket will malfunction. Severe engine damage and personal injury are possible.

Attach the right plate of the lifting bracket to the exhaust side of the rear rocker lever housing. Install the four 3/8-16×1-inch UNC (Grade 8) mounting capscrews and washers.

Remove all chassis components necessary to remove the engine from the equipment.

WARNING  The engine lifting equipment must be designed to safely lift the engine and the transmission as an assembly. The dry weight of the standard engine with accessories is 1256 kg [2770 lbs]. Refer to the equipment manufacturer’s specifications for the transmission weight.

Use a correctly rated hoist; and attach engine lifting fixture, Part Number ST-125 or Part Number 3822512, to the engine mounted lifting brackets to remove the engine.

NOTE: If the transmission is

not
removed, place a support under the transmission to prevent it from falling.

Conventional chassis configurations will require use of the portable rear lifting bracket.

Attach lifting fixture, Part Number ST-125 or Part Number 3822512, to the engine mounted lifting brackets to remove the engine.

Remove the CELECT™ injector wiring harness. Reference the CELECT™ System Troubleshooting and Repair Manual, Bulletin 3666084.

Engines with stamped steel rocker lever covers require removal of the number 3 (rear) cover.

Position the service lifting bracket, Part Number 3823920, over the rear rocker lever housing, being careful not
to damage the CELECT™ injector wiring rocker lever housing pass through connector.

CAUTION  If all fasteners are not installed and tightened to the correct torque value, the lifting bracket will fail. Severe engine damage and personal injury are possible.

Attach the lifting bracket to the fuel pump side of the rear rocker lever housing. Install the 3/8 – 16 X 1-inch UNC (Grade 8) mounting capscrews and washers into the rocker lever housing.

Attach the right plate of the lifting bracket to the exhaust side of the rear rocker lever housing. Install the 3/8 – 16 X 1-inch UNC (Grade 8) mounting capscrews and washers into the rocker lever housing.

CAUTION  If all fasteners are not installed and tightened to the correct torque value, the lifting bracket will fail. Severe engine damage and personal injury are possible.

Cover all engine openings to prevent dirt and debris from entering the engine.

Place the engine on suitable engine support stands.

Remove and use all remaining accessories and brackets with the replacement engine.

Remove the service engine lifting bracket, if used, to remove the engine from the chassis.

Refer to Procedure 016-001 in Section 16.