Grove
Published 01-14-2021 Control # 707-01
5-9
TMS9000-2 SERVICE MANUAL
SUPERSTRUCTURE MAINTENANCE
5
PERIODIC INSPECTIONS
Your truck crane was inspected before delivery. Regulations
in your area may prescribe specific inspection intervals and
should be reviewed and adhered to. If such regulations do
not exist, an inspection should be carried out by an
expert
at
least once a year.
These periodic inspections are generally visual inspections
intended to assess the condition of the truck crane and its
components. Their purpose is to detect defects at an early
stage and thus prevent accidents.
Inspections are to be carried out on the following
components, where these are not already contained in the
list of routine maintenance tasks:
•
the hydraulic and electrical control and safety devices,
•
the rated capacity limiter (RCL),
•
the mounting and safety devices of all screwed-on parts,
•
the hoist ropes,
•
load hooks (
, page 5-9 Section
below),
•
the load-bearing structural steelwork (for tears,
deformation, etc.), including a special check of all welds.
If damage is found in the structural steelwork, have qualified
specialists determine the extent of the damage using the
required material examination methods. They should then
determine what sort of repair action could be done.
The inspector is to write a record containing the result of the
inspection and the measures taken to repair any damages.
Load Hook Inspection
The mouth of the load hook must be checked regularly for
deformation.
The mouth of the hook may not be expanded by more than
10% of the original dimension
y
,
y1
,
y2
.
The original dimensions
y
,
y1
,
y2
are printed in field (2),
(Figure 5-1) on the load hooks.
•
To check, measure the distance between the marked
measuring points on the load hook shaft (1), (Figure 5-1)
and the tip of the hook (3), (Figure 5-1).
The hook block may no longer be used if the mouth has
expanded by over 10% of the initial dimension.
The load hook must consequently be replaced.
WARNING
Accidents May Occur if the Load is Allowed to
Drop!
Hook blocks with deformed load hooks are no longer
operationally safe! The load hooks could break and drop
the load. Deformed load hooks must always be replaced!
FIGURE 5-1
W1354a
Fo
r
Reference
Only
