97
SR460/620
SR820
5.6.2.11 Inspect the hydraulic rams condition; see
Section 5.6.1. Inspect the hydraulic ram port
adaptors and seals to see they’re
serviceable and able to be used on the
replacement ram.
5.6.2.12 Measure the distance between the cylinder
pin holes on the old ram and extend the new
cylinder to that length before installing.
5.6.2.13 Install the new cylinder in place and install
both cylinder pins and retaining bolts in
place.
5.6.2.14 Ensuring that you are still wearing suitable safety glasses and impenetrable gloves, reconnect the
hydraulic hose(s) to the cylinder and tighten the fittings.
5.6.2.15 Reconnect the implement hoses to the tractor.
5.6.2.16 Get into the tractor seat and fasten your seat belt. Clear the area of all persons before attempting to
raise the wing. From the tractor seat, start the tractor and operate the control valve to raise the wing.
5.6.2.17 Look for signs of oil leaks. If an oil leak exists, shut the tractor down and remove all oil pressure in the
lines by moving the valve control handles back and forward.
Retighten any loose fittings and connections and if a hose is leaking, replace the hose with a new
hose.
5.6.2.18 If there are no leaks, raise and lower the wing completely at least three full cycles to remove any air
trapped in the circuit.
5.6.2.19 Check the hydraulic reservoir of the tractor to ensure there is sufficient oil.
5.6.2.20 If the wing is to remain in the raised position attach the wing transport lock;
see Figure 4.16 (SR460/620) and Figure 4.17 (SR820).
5.6.2.21 If the machine is planned to be used straight after, inspect the machine to ensure that it will achieve a
level cut. See Section 4.7 for guidance on levelling the machine.
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