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32DFR114.A 

4 - 8 

f. 

Refer to 

Figure 4-4.

  To operate the hydraulic pump in the deploy mode (when the ramp is already 

deployed), the stow sensor must be actuated.  This can be done by placing a metallic object close 
to the stow sensor.   A wrench is being used in the figure.  Notice that the LED in the base of the 
sensor lights when the sensor is actuated. 

g. 

Press and hold the DEPLOY button on the pendant and adjust the deploy pressure valve setting to 
800 psi for either the 59” ramp or the 48” ramp.  Loosen the lock nut on the valve and engage the 
adjustment screw with a ¼” hex key wrench to adjust.  Tighten lock nut after adjustment. 

h. 

Remove all test equipment and reconnect the two hydraulic actuator hoses to the pump body. 

i. 

Check hydraulic fluid level, and refill reservoir as required. 

j. 

Press the STOW button on the pendant to verify that ramp stows. 

NOTE: 

If ramp does not stow fully, repeat steps c. and d. above.  Readjust stow pressure by turning the 
stow pressure setting valve 1/8 turn CW until ramp stows 

k. 

Press the DEPLOY button on the pendant to verify that ramp deploys. 

NOTE: 

If ramp does not deploy fully, repeat steps e, f, and g. above.  Readjust deploy pressure by turning 
the deploy pressure setting valve 1/8 turn CW until ramp stows 

6. 

FLOW CONTROL VALVE ADJUSTMENT 

NOTE: 

It is important to adjust both flow control valves (C1 and C2) 

identically

 during this procedure. 

a. 

Loosen lock screws that secure the valve knobs. 

b. 

Turn both valves fully CW.  This completely closes the valves, stopping ramp operation. 

c. 

Open both valves 1/2 turn CCW from fully closed.  Verify that each valve is adjusted identically.  
Rotating valves CCW increases flow to the ramp actuator and increases speed/torque; rotating the 
valves CW decreases flow to the actuator and decreases speed/torque. 

d. 

Tighten lock screws. 

 

FIGURE 4-4:  STOW SENSOR ACTUATED WITH A WRENCH

FIGURE 4-3:  PRESSURE GAUGE CONNECTED TO DEPLOY PORT 

Содержание BR2SS Series

Страница 1: ...it breaker tripped Reset circuit breaker Hydraulic pump circuit breaker tripped Reset circuit breaker Vehicle interlock conditions not met Check that all interlock conditions are met before attempting...

Страница 2: ...y turning them fully clockwise Readjust valves as shown in section C 5 in this chapter Hydraulic fluid level low Check hydraulic fluid level refill as required Low hydraulic pressure Check that hydrau...

Страница 3: ...ve Check for PUMP SOLENOID INPUT signal at controller connector pin J4 4 Replace controller if necessary Hydraulic pump does not operate pump solenoid does not operate Pump wiring harness defective Ch...

Страница 4: ...Repair as required Replace hydraulic pump Hydraulic pump wiring harness defective Repair or replace harness from electronic controller to hydraulic pump Pump directional valve defective Replace hydrau...

Страница 5: ...adjustment Verify that proximity sensor is energized LED on sensor indicates operation and adjusted for correct gap Refer to section B 6 in this chapter Ramp will function in one direction but not th...

Страница 6: ...terface connector See Table 4 2 for pin layout and signal descriptions Table 4 2 CONNECTOR PIN LAYOUT AND DESCRIPTION Pin Wire color Description Volts amps 1 White Interlock common Ground for interloc...

Страница 7: ...connect to the ports on the backside of the pump body Cap off the upper deploy port fitting and connect a suitable pressure gauge to the lower stow port fitting d Press and hold the STOW button on the...

Страница 8: ...s NOTE If ramp does not stow fully repeat steps c and d above Readjust stow pressure by turning the stow pressure setting valve 1 8 turn CW until ramp stows k Press the DEPLOY button on the pendant to...

Страница 9: ...target segment must be directly in front of a sensor Adjust as necessary c Refer to Figure 4 6 Loosen jam nuts on sensor body Adjust position of both nuts to achieve a gap between nose of sensor and...

Страница 10: ...a Visually inspect ramp for loose or missing hardware and fittings and confirm that pockets are free of debris b Verify that bottom cover is installed on ramp c Verify that non skid flooring is clean...

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