Maintenance Of Suspension System - PRONAR T900 Operator's Manual

SECTION 5

5.6 MAINTENANCE OF SUSPENSION SYSTEM

TABLE 5.2 Mechanical suspension system maintenance schedule
FREQUENCY
After the first travel
with load.
Before intensive use
or once every 6
months.
Once a year
Tighten all U bolt nuts on the axle using recommended tightening
torque - figure (5.10) item A. The nuts should be tightened diagonally.
Tighten all bolt and nut connections of the suspension system, item B
and D (suspension spring stirrups, brackets, rigid and adjustable
lateral control rods, suspension springs) – figure (5.10).
Tighten the fixing of adjustable lateral control rods – figure (5.10) item
C. If the bolts are loose, the length of rods may be wrong. Confirm that
the distance between the axles on the right side and the left side of the
trailer is the same. Confirm that wheels are positioned in parallel to
direction of travel.
Tighten the fixing of flexible sleeves of rigid and adjustable lateral
control rods.
Pressure washers (item 1) should not touch the bracket (item 2).
Otherwise, replace the rubber conical sleeves (item 3) - figure (5.11).
Before installation, grease the rubber sleeves.
Check the condition of the suspension springs (item 1): carefully clean
and brush the sides of the suspension springs in order to confirm that
there are no cracks.
If there is a clearance between suspension springs and the axle, check
the complete fixing system: U bolts, guiding and clamping plates of the
suspension spring bolts.
5.25
MAINTENANCE ACTIVITIES
Pronar T900