Lift generator slowly so that generator mounting feet are free from skid base mounting pads. Move
generator slowly in rearward direction until generator flex plates and rotor hub dear engine flywheel
Hoist the generator out of the generator set and set it on the floor or a pallet.
Install suitable protection over engine flywheel housing, conduit box, and all other exposed equipment to
protect from the elements.
Install. This procedure is for installation and alignment of the generator.
Remove the mufflers in accordance with paragraph 4-86 of the Operator and Organizational Maintenance
Prepare the generator set by removing roof panel 4 (see Figure 2-2 and paragraph 413 of the Operator and
Organizational Maintenance Manual), over the rear of engine compartment, removing all tools and
equipment from the engine and generator bays, and positioning over rear of engine an overhead hoist or
crane rated for 15,000 pounds (6800 kg).
Rig the engine assembly for lifting. There are two lifting brackets at the rear of the engine mounted to the
cylinder block between the cylinder head assemblies. Use locking lifting hooks on the brackets. Actuate
the hoist enough to take the slack out of the lifting device, but do not lift the engine at this time.
Loosen hexagonal nuts (13, Figure 2-5), securing front of engine to front engine support.
Remove hexagonal nuts (9, Figure 2-5) and washers (8), retaining rear engine supports (6), to skid base.
Raise the rear of the engine and place 1/2 inch (12 mm) spacer blocks between the skid base and the rear
engine supports (6, Figure 2-5). Lower the engine until the supports rest on the spacer blocks.
The purpose of the 112 inch (12 mm) spacer blocks is (1) to eliminate interference between the
generator and the skid base during preliminary assembly and (2) to allow sufficient clearance
to establish an 0.015 inch (0.38mm) (approximate) gap between the flywheel housing and the
generator S.AE. flange (adapter) for preload condition checking.
Install two lineup studs in the flywheel for generator drive plate (flexible discs) alignment at the 3 and 9
Use of sling, chins, or lifting hoists not rated for the weight of the engine assembly may result
In Injury to personnel and falling damage to equipment.
Rig the generator for lifting (see Figure 2-9), with a hoist or overhead crane rated for a minimum of 6,000
pounds (2722 kg) and a minimum height clearance of 150 inches (3810 mm). There are two lifting
brackets welded to the top of the generator. Use locking lifting hooks on the brackets and raise the hoist to
remove slack from the slings and lifting chains, but do not lift generator at this time.
To minimize potential falling damage, clear the area of personnel and other equipment when
attempting to lift heavy equipment.
This task requires two people.
Hoist generator into the generator set through the roof, piloting the drive plate (flexible discs) to the lineup
studs installed in the flywheel in step (7), above. This will require manual alignment while generator is
being suspended on lifting device. Generator adapter ring must be properly seated in flywheel housing
before proceeding to next step.