KEENAN MechFiber 250 and
280 Operator’s Manual
29
Revision C01, 04
th
Dec 2019
8.7 Tyres
1.
Each week check the tyres for wear and damage.
2.
Each week check the tyre pressures. Optimum tyre pressures are shown in Table 7.
This information is given as guidance. If in doubt, please contact KEENAN service.
WARNING:
When re-fitting and re-inflating tyre/wheel assemblies, a safety cage should be used
to prevent possible injury. Incorrectly fitted tyres are dangerous. Please make sure
tyre repairs are carried out by experienced tyre fitters.
Type
Bar
PSI
30 x 11.5 R14.5
8.0
118
245 / 70 R 19.5
8.5
125
305 / 55 R 22.5
7.0
110
285 / 70 R 19.5
8.5
125
400 / 60 R 15.5
4.6
68
385 / 65 R 22.5 (8 stud)
5.5
81
385 / 65 R 22.5 (10 stud)
9.0
132
Table 6: Tyre pressure
8.8 Wheels
1.
Each year lever off the hub cap, remove the split pin and castle nut and remove the hub.
2.
Check seals, bearings, brake shoes, springs, studs, and all other internal parts.
3.
Replace worn parts, re-grease and re-fit.
Note:
1. When re-fitting the wheels, tighten the castle nut until resistance is felt (do not over tighten). Release
the castle nut 1/6 of a revolution, check for movement in the hub, and if none, re-fit the split pin.
2. At the end of the feeding season, wash the machine down thoroughly, preferably using a power washer.
Grease or oil all lubrication points and open the drain bung on the bottom of the machine.
Changing a wheel
▪
Park the mixer wagon on level ground and apply the handbrake.
▪
Fit chocks to opposite wheels to prevent machine movement during the operation.
Loosen the wheel nuts with a wrench but do not remove the nuts at this stage.
▪
Jack up the mixer wagon underneath the axle until the bottom of the wheel is off the
ground. Remove the nuts completely and slide off the wheel.
▪
Re-fit the wheel ensuring that the centre of the wheel is properly located on the hub and
hand tighten wheel nuts.
▪
Lower the machine and tighten the nuts to the recommended torque using suitable
equipment.
▪
Check the wheel nuts for tightness after 1 hour of use, repeating on a weekly basis.
