Mast/Lift system 7000
Manual telescopic forks
Publication No. Date Valid from serial number T-code
261828-040 2008-08-21 6051502 815, 816
© BT Repair Manual RRE140/160/180/200/250 15 – 35
15.8.2 Maintenance
It is not necessary to grease the original fork or the extended section.
Remove any dirt using a wire brush, for example.
The fork must be inspected annually.
The following checks are to be performed:
• The function of the fork arm’s locking device at the fork attachment
point
• The function of the extended section’s locking device
• The function of the stop screw (it must not be possible to remove the
extended section)
• Check the original forks for deformation (90 degree angle)
• Check for wear on the original fork (10% rule)
When the thickness of the steel on the extended section has been
reduced to 3 mm or less at any point of the extended section, this must
be replaced. Wear to the extended section occurs most often near the
heel or under the fork tip. If wear to the original forks is 10% or more of
the nominal thickness, the original fork must also be replaced. (ISO
5057)
• Check for cracks in the fork heel and extended section
• Check for wear to the extended section (t=>3 mm)
• Check the extended section for deformation and cracks
• Check the locking bolt and its function
IMPORTANT!
Always replace the forks in pairs.
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