Great Plains Uni-Press - Manual (Page 18)

WEEKLY SERVICE
1. Grease roll axle bearings until grease shows
2. Tighten all nuts and bolts including wheel nuts. Vibration through the machine may cause
the nuts and bolts to work loose leading to wear.
IMPORTANT: - Never use a hammer to assist tightening of nuts and bolts.
- Using an incorrect size or grade of bolt may result in damage to the machine.
MAXIMUM NUT AND BOLT TORQUES
M16 GRADE 8.8 - 24 KG.M. (176 lb.ft.)
M20 GRADE 8.8 - 48 KG.M. (352 lb.ft.)
M30 GRADE 8.8 - 150 KG.M. (1100 lb.ft.)
M36 GRADE 8.8 - 280 KG.M. (2055 Ib.ft.)
WHEEL NUT TORQUES
6 STUD HUBS M18 - 27.7 KG.M. (200 lb.ft)
3. Check that roll axles are tight. If the roll axles are allowed to run loose the rings will
become worn and may not be able to be tightened correctly as a result. An axle that
blocks
regularly is an indication that the axle is not tight as there is no drive between each ring.
a). Loosen the bearing pillar 'U' bolts on one pillar. This allows the pillar to move slightly
when the tension is applied to the main axle castle nuts when tightening the axle. This
ensures that the bearings are not preloaded, which could lead to unwarrantable early
failure.
NOTE: When the axle needs tightening again, loosen the bearing pillar 'U' bolts that were
not loosened the previous time. This will avoid the necessity of having to adjust the
position of the scrapers each time. To maintain the front to rear tracking of the axles the
corresponding pillars should be loosened.
b). Remove the split pin from the axle.
c). Tighten the axle until the single belleville washer in each triple pack is fully
compressed
ensuring that the split pin can then be refitted.
d). Tighten the bearing pillar 'U' bolts.
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