Periodically check the actuator mounting fasteners for damage or loosening. Inspect the actuator for worn or dam- aged parts. As you are towing your trailer, be aware of any changes in braking quality. This could be an early warning of brake or actuator malfunction and requires immediate attention. Consult a certified brake specialist to make necessary adjustment or repairs.
Adjustable Channel
Your trailer may be equipped with an adjustable channel (Fig- ure 22) that allows the coupler to be raise or lowered to a desired height. Periodically check the channel bolts for dam- age or loosening.
ADJUSTABLE
CHANNEL
5/8” X 11” X 5”
BOLT
|
| 5/8” | |
| 5/8” FLAT | NYLOC | |
| NUT | ||
WASHER | |||
| |||
COUPLER |
|
|
Figure 22. Adjustable Channel
With Pintle Eye Coupler
Wheel Bearings (Hubs)
Wheeel bearings (Figure 23) must beinspected and lubri- cated once a year or 12,000 miles toinsure safe operation of your trailer.
If a trailer wheel bearing is immersed in water, it must be replaced.
If the pump/trailer has not been used for an extended amount of time, have the bearings inspected and packed more frequently, at least every six months and prior to use.
Follow the steps below to disassemble and service the wheel bearings.
After removing the dust cap, cotter pin, spindle nut and spindle washer, remove the hub and drum to inspect the bearings for wear and damage.
MAINTENANCE (TRAILER)
DANGER - Wheel Bearings
If trailer wheels are under water for a long period of time, wheel bearings may fail. If this is the case, service wheel bearings immediately.
The possibility exists of the wheels falling off, causing equipment damage and severe bodily harm even death!
Replace bearings that have flat spots on rollers, broken roller cages, rust or pitting. Always replace bearings and cups in sets. The inner and outer bearings are to be replaced at the same time.
Replace seals that have nicks, tears or wear.
Lubricate the bearings with a high quality
BEARING |
|
|
CONE | WHEEL |
|
|
| |
| HUB |
|
OIL |
|
|
SEAL |
| COTTER |
BEARING |
| PIN |
|
| |
CUP |
|
|
|
| DUST |
LUG |
| CAP |
NUT |
|
|
| SPINDLE |
|
| WASHER | CASTLE |
|
| |
|
| NUT |
Figure 23. Wheel Hub Components
Wheel Hub Adjustment
Every time the wheel hub is removed and the bearings are reassembled, follow the steps below to check the wheel bearings for free running and adjust.
Turn the hub slowly, by hand, while tightening the spindle nut, until you can no longer turn the hub by hand.
Loosen the spindle nut just until you are able to turn it (the spindle nut) by hand. Do not turn the hub while the spindle nut is loose.
Install a new cotter pin through the spindle nut and axle.
Check the adjustments. Both the hub and the spindle nut should be able to move freely (the spindle nut motion will be limited by the cotter pin).
DRY PRIME PUMP — OPERATION AND PARTS MANUAL — REV. #3 (10/06/08) — PAGE 33
