Maintenance
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C3M2-OM-EN-02
6.16 Mast Maintenance
Perform checks on the mast as required by the Pre-Use checks and maintenance as
required by the first 100 operating hours service and in accordance with the
maintenance schedule. Details on how to perform the mast checks and maintenance
are provided in this section.
6.16.1 Mast Channel Maintenance
Periodic lubrication of the mast channels is required to
ensure maximum life span is achieved. All roller
surfaces must be greased periodically where the fork
carriage bearings and mast section bearings run. The
frequency of this operation is at the discretion of the
user and essentially depends upon the working
conditions. A lubrication interval of 250 hours can be
taken as a typical value under normal working
conditions. For this purpose use graphite grease, avoid
spray greases.
6.16.2 Fork Carriage With Hydraulic Fork Positioning Maintenance
Periodic lubrication of the fork carriage bars is required to ensure maximum life span
is achieved. All surfaces where contact occurs between the forks and the fork bars
must be greased periodically where the forks run. The frequency of this operation is at
the discretion of the user and essentially depends upon the working conditions. A
lubrication interval of 250 hours can be taken as a typical value under normal working
conditions. For this purpose use graphite grease, avoid spray greases.
6.16.3 Mast Chain Maintenance
Regular inspection and lubrication of the chains will vastly increase their service life
and reduce downtime. When performing chain maintenance, make sure to follow the
guidelines in ‘Chain Inspection’, ‘Measuring Chain Stretch’, ‘Chain Lubrication’ and
‘Chain Adjustment’.
It is recommended that trucks used in arduous, harsh or aggressive environments such
as marine, corrosive chemical, metal manufacturing or processing, cement/aggregate
processing and brine processes (this list is not exhaustive) should have their mast
chains and mast chain anchor pins replaced after a period not exceeding 4000
operating hours or two years, whichever is the shorter. Those operating in cold stores
should be replaced after a period not exceeding 6000 hours or three years, whichever
is the shorter. Additionally where the lifting mechanism uses a single leaf chain (e.g.
free lift section), the leaf chain anchor bolts should also be replaced at the same time.
Warning
Never work on the mast with the forks in a raised position unless adequate
supports are in place.
Block access to the lift truck control handles when working on the mast.
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