Perform Engine Maintenance - John Deere Models - Genie GTH-1048 Service Manual

Service Manual
Checklist C Procedures
Note: The boom chain's normal life expectancy
can be expressed as a maximum percent of
elongation of 3%.
• Edge wear:
Check the chain for wear on the link plate
edges caused by running back and forth over
the sheave. The maximum reduction of
material should not exceed 5%.
• Cracked plates:
Check link side plates for any cracks. These
are generally a sign of chain fatigue.
• Turning pins:
Check the pins. The position of the riveting
must be parallel with the top and bottom of the
side plate.
If any of these conditions are discovered during the
inspection, the chain must be replaced.
After inspection and before being returned to
service, the chains must be lubricated with a
quality chain lubricant.
Note: Do not use grease to lubricate chains.
The chain plates should be brushed with a wire
brush prior to lubrication to clear the space
between the plates.
The lubricant must penetrate the chain joint to
prevent wear. Applying lubricant to the external
surfaces will prevent rust, but the chains should be
articulated to make sure the lubricant penetrates to
the working surfaces between the pins and links.
Lubricant may be applied with a brush, sprayed or
poured on, but the chain should be well flooded
with lubricant and the boom should be extended
and retracted to insure that the lubricant
penetrates to the working surfaces. All excess
lubricant should be wiped away from the external
surfaces.
Note: Do not use solvents to remove excess
lubricant.
34
C-2 Perform Engine M aintenanc e - J ohn D eere M odels
C-2
Perform Engine Maintenance -
John Deere Models
Engine specifications require that this procedure
be performed every 500 hours or annually,
whichever comes first.
Required maintenance procedures and additional
engine information is available in the John Deere
4045HF485 Operator's Manual.
John Deere 4045HF485 Operator's Manual
Genie part number
GTH-1048 • GTH-1056
March 2016
123703
Part No. 123701
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