TP-6376 3/0848 Section 5 General Maintenance
14. Rotate the fuel supply three-way valve handle 180_
until the marker points toward the fuel/water
separator.
15. Check and repair any fuel leaks.
16. Dispose of the used fuel/water separator element
and dirty rags in a proper manner.
Fuel/Water Separator Element Replacement
with Units Not Equipped with Bypass Kit
1. Close the fuel valve at the nearest point to the
fuel/water inlet fitting or at the fuel tank.
2. Open the water drain valve and allow water and
fuel oil to flow into a suitable container.
Note: Depending upon the location of the fuel
valve, a considerable amount of fuel may
drain out.
3. Loosen the T-handle on top of the fuel/water
separator and remove the lid.
4. Remove the element by pulling upward on the
molded handle with a turning motion.
5. Wipe off excess fuel oil from each component using
a clean, dry rag.
6. Inspect components for wear or damage. Replace
parts as necessary.
7. Close the water drain valve.
8. Install the new element and fill the unit with clean
fuel.
9. Replace the lid gasket and apply a coating of clean
fuel to the seal.
10. Install the lid and hand-tighten the T-handle.
11. Open the fuel valve on the water separator inlet
fitting or at the fuel tank.
5.8 Brake Service
Use the supplied axle and related component manual
for all required brake inspection, troubleshooting, and
service maintenance.
5.9 Axle/Hub Bearing Service
Use the supplied axle and related component manual
for all required axle, hub, drum, and/or bearing
inspection and service maintenance.
5.10 Suspension Service
The suspension system incorporated into the axles is
designed to perform three basic functions:
D Attach the axle to the trailer
D Dampen the effects of road shock
D Provide stability to the trailer
Visually inspect all suspension components at the
specified interval for signs of excessive wear, elongation
of bolt holes, and loosening of fasteners. Tighten all
fasteners to the specified torque.
Use the supplied axle and related component manual
for all required suspension inspection and service
maintenance.
5.11 Wheel and Tire Service
Tires and wheels are very important and a critical
component of the trailer running gear. When replacing
trailer tires and wheels match the tires, wheels, and axle
for best compatibility. The following characteristics are
important when replacing wheels and tires.
D Wheel Bolt Circle. Many bolt circle dimensions are
available and some vary so slightly that it may be
possible to install an improperly matched wheel to an
axle hub. Select wheels which match the axle hub.
D Load Capacity. Verify that the wheel and tire load
carrying capacity and inflation pressure rating match
the maximum trailer load.
D Wheel Offset. The offset refers to the relationship of
the tire centerline to the axle hub face. Replacement
wheels must match the offset of the originally
equipped wheels. Mismatched offset can result in
inadequate tire clearance or insufficient axle load
capacity.
D Rim Contour. Replacement wheels must maintain
the same rim size and contour as the originally
equipped wheels to prevent possible tire and wheel
separation.
Use the supplied axle and related component manual
for all required wheel and tire inspection and service
maintenance.
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