Operator's Manual

38
Changing the Pump Drive
Gearbox Fluid
Change the pump drive gearbox after the first 50 hours and
then after every 400 hours thereafter.
1. Position the sprayer on a level surface, set the parking
brake, stop the pump, stop the engine, and remove the
ignition key.
2. Place a pan under the drain plug on the pump drive gear
box.
2
1
3
Figure 48
1. Pump drive gearbox
2. Fill tube
3. Drain plug
3. Remove the fill plug and drain plug (Fig. ), allowing the
oil to drain into the pan.
4. Install and tighten the drain plug when the fluid stops
draining.
5. Add approximately 1 quart (1 L) of Mobil SHC 634
Synthetic Lubricant to the fill tube.
Important Use only Mobil SHC 634 Synthetic
Lubricant or equivalent synthetic fluid in the gear box.
Non-synthetic oils may break down causing damage to the
pump gearbox.
6. Install the fill plug.
Inspecting the Brakes
The brakes are a critical safety component of the sprayer.
Inspect them as follows every 100 hours:
• Inspect the brake shoes for wear or damage. If the
lining (brake pad) thickness is less than 1/16 inch
(1.6 mm), replace the brake shoes.
• Inspect the backing plate and other components for
signs of excessive wear or deformation. If any
deformation is found, replace the appropriate
components.
Adjusting the Parking Brake
Check the parking brake adjustment every 200 hours.
1. Loosen the set screw securing the knob to the parking
brake lever.
2
1
3
Figure 49
1. Parking brake lever
2. Knob
3. Set screw
2. Rotate the knob until a force of 35–45 lbs. is required to
actuate lever.
3. Tighten the set screw.
Adjusting the Front Wheel
Toe-In
Check the front wheel toe-in after every 100 operating
hours, or annually, whichever occurs first. The toe-in
should be 0 to 1/4 inch (0 to 6 mm).
1. Fill the tank with approximately 80 US gallons (303 L)
of water.
2. Check and fill all tires; refer to Checking Tire Pressure,
page 14.
3. Drive the sprayer back and forth a few times to relax
the A-arms, then drive it forward at least 10 ft (3 m).