Skytrak 6042 Service Manual User Manual download pdf (Page 505)

9.135

Model 6042 Legacy Origin 7/02

Electrical System

c. Service Brake Switch Adjustment

Note: The service brake switch adjustment will require

two people. Enlist the help of an assistant before

attempting to follow the adjustment procedure.

1. Remove lower access panel (Fig. 9-137, 1).

Figure 9-137 Remove Lower Access Panel

2. Loosen locknut (Fig. 9-135, 2) securing the switch

body (4) to the service brake switch bracket (5).

3. Connect a 1000 psi (69 bar) pressure gauge to the

test port (Fig. 9-138, 1) on the service brake

valve (2).

4. Block both front tires.

5. Start the engine and run it at low idle.

6. Position the boom above 40°, have the engine

running at idle, the transmission in forward 4th gear

and the park brake released.

7. Slowly depress and hold the brake pedal

(Fig. 9-135, 3) to maintain 150 ±50 psi

(10,3 ±3,4 bar) brake pressure.

Figure 9-138 Service Brake Valve Test Port Location

8. Using the switch dust cover (Fig. 9-136, 5) and the

locknut (2) in combination, position the brake switch

so the Stabil-TRAK dash light comes ON at the

150 ±50 psi (10,3 ±3,4 bar) brake pressure.

9. Repeat steps 6 through 8 until the Stabil-TRAK dash

light comes ON at the 150 ±50 psi (10,3 ±3,4 bar)

brake pressure.

10. After the required pressure is achieved, use a

wrench and fully tighten the locknut (Fig. 9-135, 2)

against the service brake switch bracket (5).

In order to test the switch for proper operation, the boom

must be raised above the 40° position, the parking brake

switch must be in the OFF position and the vehicle must

be in a forward or reverse gear mode. Proper operation

of the switch will activate the Stabil-TRAK dash panel

indicator. If the Stabil-TRAK indicator does not activate

when all conditions are met, the sensor must be adjusted.

(Refer to Section 9.15.16, b. “Boom Lift Sensor

Installation.”)

11. Shut off the engine.

12. Remove blocking from front tires.

13. Remove the pressure gauge.

14. Replace lower access panel (Fig. 9-137, 1).

WARNING: NEVER attempt to adjust

the service brake switch without an assistant.

Anytime the engine is running and the parking

brake is disengaged, there must be an

operator located in the cab and the two front

tires must be blocked. Death or serious

personal injury could result from the vehicle

lurching forward or backward and running over

the person attempting to adjust the service

brake switch.

OH1760

MA7060

1 2 ... 500 501 502 503 504 505 506 507 508 509 510 ... 543 544

Comments to this Manuals

No comments

Skytrak 6042 Service Manual User Manual Page 505

Comments to this Manuals

Related products and manuals for Special machinery Skytrak 6042 Service Manual