4-54-5
Suspension Ride StrutsSuspension Ride Struts
Suspension ride struts are oiled and charged with nitrogen to ensure optimum ride comfort. However, ride struts may haveSuspension ride struts are oiled and charged with nitrogen to ensure optimum ride comfort. However, ride struts may have
been lowered during transportation of the machine. These struts must be correctly set prior to operating the machine.been lowered during transportation of the machine. These struts must be correctly set prior to operating the machine.
The ride struts contain a mixture of nitrogen and oil, so when the struts are lowered, some oil will be lost along with theThe ride struts contain a mixture of nitrogen and oil, so when the struts are lowered, some oil will be lost along with the
nitrogen. Although only a small amount of oil may be lost, this will still affect the final ride height, so it is important that ridenitrogen. Although only a small amount of oil may be lost, this will still affect the final ride height, so it is important that ride
struts contain the correct volume of oil.struts contain the correct volume of oil.
To recharge the ride struts, nitrogen pressures are given in the table below. These pressures are dependant on oil levelsTo recharge the ride struts, nitrogen pressures are given in the table below. These pressures are dependant on oil levels
being correct, refer to Section 180, SUSPENSION SYSTEM in the Maintenance Manual. Use suitable lifting equipment tobeing correct, refer to Section 180, SUSPENSION SYSTEM in the Maintenance Manual. Use suitable lifting equipment to
fully extend ride struts and charge with nitrogen.fully extend ride struts and charge with nitrogen.
Note:Note:The heights given are intended as reference only, cylinders should always be set according to pressure. Refer toThe heights given are intended as reference only, cylinders should always be set according to pressure. Refer to
Section 180, SUSPENSION SYSTEM in the Maintenance Manual for full details.Section 180, SUSPENSION SYSTEM in the Maintenance Manual for full details.
TTrruucckk TTRR3355 TTRR4400 TTRR4455 TTRR6600 TTRR7700 TTRR110000
Front Ride Struts - bar (lbf/inFront Ride Struts - bar (lbf/in
22
)) 1111..7 7 ((117700)) 1133..8 8 ((220000)) 1133..8 8 ((220000)) 1133..8 8 ((220000)) 1177..2 2 ((225500)) 1166..3 3 ((224400))
HHeeiigghht t - - mmm m ((iinn)) 11443 3 ((55..66)) 11668 8 ((66..66)) 11668 8 ((66..66)) 11668 8 ((66..66)) 11558 8 ((66..22)) 11558 8 ((66..22))
Rear Ride Struts - bar (lbf/inRear Ride Struts - bar (lbf/in
22
)) 55..5 5 ((8800)) 7 7 ((110000)) 7 7 ((110000)) 88..3 3 ((112200)) 88..3 3 ((112200)) 88..3 3 ((112200))
HHeeiigghht t - - mmm m ((iinn)) 33665 5 ((1144..44)) 55556 6 ((2211..99)) 55556 6 ((2211..99)) 55005 5 ((1199..99)) 33778 8 ((1144..99)) 33881 1 ((1155))
Note:Note:It is advised to charge the ride struts by an additional 20 lbf/inIt is advised to charge the ride struts by an additional 20 lbf/in
22
to allow for pressure lost while carrying out pressureto allow for pressure lost while carrying out pressure
checks.checks.
After recharging, the machine should be operated to allow ride struts to settle. Then if ride heights are incorrect, the oilAfter recharging, the machine should be operated to allow ride struts to settle. Then if ride heights are incorrect, the oil
levels should be checked.levels should be checked.
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