Manitowoc MLC650 Service Maintenance Manual

Reference Only
Manitowoc Published 09-09-16, Control # 229-09 4-7
MLC650 SERVICE/MAINTENANCE MANUAL BOOM
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FLEETING SHEAVE MAINTENANCE
See Figure 4-6 for the following.
General
Each fleeting sheave assembly (1), located on the 6M insert
wire rope guides of the #680 boom assembly, has three
automatic grease guns (2) that provide lubrication
automatically.
Specifications
• Pressure: maximum 5 bar (75 psi)
• Temperature: -20 to 60°C (-4 to 140°F)
• Lifespan: maximum of 1 year
• Grease: Mobil XHP 222
• Mount: 6,35 mm (0.25 in) NPT
Inspection
Inspect the automatic grease guns weekly for the following:
• Damage to the grease gun canister
• Level of grease inside the grease gun
Replacement
The automatic grease gun should be replaced as soon as
the gun is verified to be damaged or empty.
The grease gun can be removed by hand. Turn the grease
gun counterclockwise to remove from the fitting on the
fleeting sheave assembly. Carefully thread the new grease
gun clockwise onto the fleeting sheave fitting by hand. Do
not overtighten the grease gun. Damage to the grease gun
can occur when excessive tightening force is applied to the
plastic canister.
Activation
To activate the grease gun, turn the dial on the grease gun
canister head to a minimum of 1 and to a maximum of 12.
Adjustment
The dial indicator on the top of the grease gun can be set to
empty in monthly increments. Set the dial as necessary to
provide adequate grease based on the level of crane
operation. For example, when the dial indicator is set to 1,
the grease gun will empty in approximately one month.
Operation
Operation of the fleeting sheave grease gun is self-
sustaining once activated.
When the crane is not in use for extended periods of time or
is placed into storage, it is recommended that the grease gun
be set to the OFF position. This deactivates the grease gun,
preventing grease from being pumped to the sheave
bearing. The dial indicator (3) in Figure 4-6
is shown in the
OFF position.
Item Description
1 Fleeting Sheave Assembly
2 Automatic Grease Gun
3 Dial Indicator—OFF Position
FIGURE 4-6

Manitowoc MLC650 Specifications

General

Brand	Manitowoc
Model	MLC650
Category	Construction Equipment
Language	English