jcb JS300 Service Manual page 23

Preparation
Before removing and replacing components do the
following:
– To prevent contamination of the machine systems,
clean the machines in the area of the applicable
components. Refer to Section 2, Preservation and
Storage, Cleaning the Machine.
– Make sure that the correct maintenance procedures
are available.
– Make sure that the correct tools and equipment are
available.
– Make sure that the correct replacement parts,
consumables, fluids and lubricants are available.
Original Components
Always Install new oil seals, gaskets, etc.
Components showing obvious signs of wear or damage
should be replaced with new ones.
Before re-installing original components do the following:
– Clean components using the applicable cleaning
materials.
– Inspect components for signs of excessive wear or
defects.
– Check the component specifications such as wear
limits where applicable.
New Components
Make sure that the correct new components are installed.
Do not substitute components from another machine.
Components may look the same but may not be
interchangeable. Refer to the JCB parts systems.
Torques and Fixings
When replacing components always tighten the applicable
fixings to the correct torque. For the torque setting to be
effective do the following before installing the fixings:
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Removing and Replacing Components
Section 1 - General Information
Removing and Replacing Components
– Make sure that all the applicable component
assemblies are correct.
– Make sure that the applicable fixings are to the
correct specification. If necessary discard the original
fixings and replace them with new ones. The relevant
procedures indicate when this is necessary.
– Make sure that the applicable fixings and threaded
holes are free from contamination. This includes; dirt,
debris, old sealants and compounds, fluids and
lubricants.
This manual provides reference to the correct torque
settings as follows:
– Where no torque setting is given in the applicable
procedure, use the standard torque setting. To obtain
the correct standard torque setting refer to Torque
Settings in this section.
– Where torque settings are given in the applicable
procedure use the settings given. These settings may
be different to the standard torque settings in the case
of special fixings for example.
9813-5100-1
General Procedures
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