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See Section 5.5.2 for assessing the condition of machine cutting blades.
See Section 5.5.6 for assessing the condition of machine anti-scalp lower blade carriers.
Before reassembling the blade and blade carrier assembly assess the gearbox seal protector and seal ensuring
it is in good condition and undamaged. Ensure the gearbox oil seal is not damaged and no ingressed wire or
other material is in the protector. Before reassembly in general ensure that all components are checked for their
condition and cleanliness.
DANGER! Failure to replace a worn or damaged gearbox shaft and/or upper blade carrier may lead to
catastrophic failure of the carrier assembly and ejection of broken parts which may cause serious bodily
injury or death.
When fitting the upper blade carrier to the gearbox shaft ensure that there is no play between the splines. If in
doubt replace. Neglecting play in a worn gearbox shaft and/or upper blade carrier splines can cause serious
injury or death. It can also create abnormal vibrations in the machine which in turn can damage other machine
components.
IMPORTANT: Stop and do not use the machine when there is vibration in the machine, as this may cause
breakage and serious damage. Find the cause of the vibration or have it inspected by personnel assigned by
McConnel and do not use the machine until the cause is identified and eliminated.
IMPORTANT: Always replace blade bolts and nuts and blade bushes with brand new items whenever blades
are removed and/or replaced. For torque settings on the components; see Section 5.9.
IMPORTANT: Always use genuine McConnel parts when carrying out repairs and maintenance with thoughts to
longevity and reliability of the machine and personnel safety. Genuine McConnel parts are made to specific
standards to give performance and safety. Substitute components may not meet specifications and may fail in a
hazardous manner that could cause injury.
McConnel declines all responsibility for damage and/or injury caused by use of anything other than the genuine
McConnel parts on SR460/620/820 rotary machines.
See Section 7 for guidance on spare parts. The machine serial number will be required to be quoted. For
guidance on finding the serial plate location; see Figure 1.4.
5.6 Hydraulic Components
Equipment Required
2 x 19mm hex spanners
2 x 8mm allen head socket/key
2 x 22mm hex spanners
2 x 27mm hex spanners
6mm hex spanner
Before proceeding to carry out any maintenance requirements on the hydraulic system, ensure that you have
thoroughly read and understood Section 2.4 on how to safely go about carrying out maintenance requirements
to the machine, including how to approach the hydraulic system and its components. Section 2.3 should also be
read to understand how to safely operate and use the machine in general.
CAUTION! Relieve hydraulic pressure before disconnecting the hydraulic hoses or working on the
system. This can be done by pushing and pulling/pushing the selected tractor lever/button. Only once
this has been completed and then suitable safety glasses and impenetrable gloves have been put on
can the hydraulic hoses be removed from the tractor.
CAUTION! When working with/checking the hydraulic system on the machine always wear safety
glasses and impenetrable gloves. This also applies when working with gearboxes and gearbox oil. Use
paper or cardboard to search for leaks and not hands or any other body parts.
CAUTION! Keep hands and body away from pin holes and nozzles ejecting hydraulic fluid. Ingested or
penetrated hydraulic fluid in the body can become gangrenous. Removal must be carried out
professionally by a suitable Doctor.
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