105536
9
9
For more information, visit www.desatech.com
For more information, visit www.desatech.com
PUMP PRESSURE ADJUSTMENT
1.
Remove pressure gauge plug from filter end cover (see Figure 13).
2.
Install accessory pressure gauge (part number HA1180).
3.
Start heater (see Operation, page 5). Allow motor to reach
full speed.
4.
Adjust pressure. Turn relief valve to right to increase pressure.
Turn relief valve to left to decrease pressure. See specifica-
tions correct pressure for each model (see Figure 14).
5.
Remove pressure gauge. Replace pressure gauge plug in filter
end cover.
FUEL FILTER
1.
Remove side cover screws using 5/16" nut-driver.
2.
Remove side cover.
3.
Pull upper fuel line off fuel filter neck (see Figure 15 or 16).
4.
Carefully pry bushing, fuel filter, and lower fuel line (115T/
165T models only) out of fuel tank (see Figure 16).
5.
Wash fuel filter with clean fuel and replace in tank.
6.
Attach upper fuel line to fuel filter neck.
7.
Replace side cover.
SERVICE PROCEDURES
Continued
Relief
Valve
Pressure
Gauge
Plug
Figure 13 - Pressure Gauge Plug Removal
(40/55T/70T Models Shown)
Pump
Model
Pressure
40
3.0 PSI
55T
3.4 PSI
70 T
4.7 PSI
115T
5.3 PSI
165T
5.6 PSI
Pressure
Gauge
Figure 14 - Adjusting Pump Pressure (40/55T/70T Models Shown)
Fuel Filter, Bushing,
and Lower Fuel Line
Upper Fuel Line
Side Cover
Fuel Filter
Side Cover
Figure 15 - Fuel Filter Removal, 40/55T/70T Models
Figure 16 - Fuel Filter Removal, 115T/165T Models
Upper Fuel
Line
SERVICE PROCEDURES
