Palfinger PK 23002, Operator'S Manual

Page: 83 / 94

Maintenance 6.1-1
6.1. Maintenance
6.1-1 Warranty provisions
During servicing work we have repeatedly found that our recommendations for maintenance and
lubrication of the crane are neglected.
We bear no costs for consequential damage attributable to deficient maintenance and lubrication. It is
therefore in your interest for the maintenance of your crane to be carried out regularly and in
compliance with the regulations.
Only use lubricants and hydraulic fluids which are of the proper quality. Using low-quality products is
a false economy.
Warranty and servicing work must only be carried out by one of our authorised customer service
centres (see Maintenance Manual).
The warranty provisions are contained in the Maintenance Manual.
6.1-2 Checking bolted connections
Loose bolts may fracture under load.
Tightening torques in Nm for the following
ISO standards:
Bolts 4762,4014
Nuts 4032
Washers 7090
Lightly oiled condition
Thread - Strength class
diameter 8.8 10.9
M 8
23 34
M 10 46 68
M 12 79 117
M 14
125 185
M 16
195 280
M 18 280 390
M 20 390 560
Tightening torques for shackle bolts in Nm
Lightly oiled condition
Thread diameter Strength class
8.8
M16 x 1.5 120
Thread diameter Bolt material
C40
M20 x 1,5 140
Thread diameter Bolt material
42 Cr Mo 4V
M24 x 1.5 450
M30 x 1.5 900
M36 x 1.5 1550
M42 x 1.5 2500
M48 x 1.5 3700