LOADER ADJUSTMENTS

B.Push the Park Brake switch to the release position.

C.Place the transmission shifter to

F or R to direct movement of the machine.

D.Place your foot on the service brake to gain control and release. 2.To engage the park brake, any of the following is required:

E.Loss of service brake pressure in both axles pressure circuits.

F.Loss of system electrical power (key OFF).

G.Placement of the Park Brake switch into the engaged position. 3.To test these functions:

A.Start the engine on a level flat surface, clear of other objects.

B.Perform Step 1, A through D.

Confirm that the Park Brake indicator lamp is OFF indicating the Park Brake is released.

C.Turn the key switch to the OFF position to stop the engine. After 5 seconds, turn the key switch to the ON position (not the START position). The Park Brake light should illuminate indicating the

Park Brake is engaged.

D.Pump down the service brake pressure. Confirm the brake warning lamp is illuminated.

Continue to pump down the service brake pressure. Confirm that the Park Brake lamp is illuminated.

E.Start the engine and allow the brake pressure to build until the warning light goes out.

F.Depress the service brake and release. Confirm that the Park Brake lamp is illuminated. Put the transmission in F or R and back to N. Confirm that the Park Brake lamp is illuminated.

G.Place the park brake switch in the engaged position. Depress the service brake and put the transmission in F or R and back to N. Confirm that the Park Brake lamp is illuminated.

H.Place the park brake switch in the released position. Depress the service brake and put the transmission in F or R and back to N. Confirm that the Park Brake lamp is OFF. 4.Place the transmission in F and allow the machine to roll slowly forward. Place the Park Brake switch to the engaged position. The machine must come to a stop immediately. Confirm that the Park

Brake lamp is illuminated and that the transmission disengages. If all steps above perform as indicated, then the Park Brake system works correctly. If there was a problem with the test contact your dealer.

Height Control and Return To Travel Adjustment Procedure

2 6

5

1

3 4

BS00N076

1.Proximity Switch 2.Return to Travel Target 3.Target Mounting Plate

4.Height Control Target 5.Lift Arm 6.Front Chassis (Top Left Hand Side) 1.To avoid damage to the proximity switch, it must be adjusted back, away from the lift arm, to clear everything on the lift arm as it sweeps past. 2.Start the engine. Position the bucket flat on the ground. Shut the machine off.

Locate the return to travel target opposite the proximity switch and then tighten it to the target mounting plate. Next adjust the proximity switch out toward the target until and air gap of 3.5 to 5.0 mm (1/8 to 3/16 inch) is obtained. Lock the proximity switch in position with its jam nut. Torque the jam nut to 6.7 N•m (5.0 ft-lb).

A

2

B

4

BS00N077

2. Return to Travel Target 4. Height Control Target 3.The Location of the height control target within its slot in the target mounting plate will determine the automatic stopping height of the lift arms as they are raised. The higher the target is positioned in its slot in the target mounting plate, the lower the lift arms will automatically stop as they are raised. Position the target per the table below. Tighten the target in this position.

4.The location of the return to travel target within its slot in the target mounting plate will determine where the lift arms will automatically stop while they are lowered. The higher this target is located in its slot in the target mounting plate the lower the lift arms will automatically stop as they are lowered. Position the target per the above table. Tighten the target in this position.

MACHINE A mm (in) APPROXIMATE RESULTING RETURN TO TRAVEL HINGE PIN HEIGHT B mm (in)APPROXIMATE RESULTING HEIGHT CONTROL HINGE PIN HEIGHT mm (in)

621D Z-BAR 54 (2.13 in) 380 (14.96 in) 48 (1.89 in) 3302 (130 in) 621D XT 51 (2.01 in) 403 (15.87 in) 43 (1.69 in) 3302 (130 in)

5.Make sure the proximity switch and all the mounting bolts are tight. Start the engine. Set the detent switch to the on position, and set the return to travel/ float detent switch to the return to travel position. Raise the lift arms to approximately the horizontal position. Put the loader control lever in the raise position, and verify that the electromagnet holds it in that position until the height control target passes in front of the proximity switch. Next, with the lift arms still raised, put the loader control lever in the lower position, and verify that the electromagnet holds it in that position until the return to travel target passes in front of the proximity switch. Position the bucket flat on the ground.

Shut the machine off.

XT Return To Dig Adjustment Procedure

1

2

6

5

3

4

BS00N078

1.Tilt Cylinder (Left Hand Side) 2.Proximity Switch Mounting Bracket 3.Proximity Switch Guard

4.Target Bar 5.Proximity Switch 6.Target Mounting Bracket 1.Start the engine. Raise the lift arms until they are approximately horizontal.

Roll the bucket all the way back. Lower the arms until they are on the ground.

Shut the machine off.

2.Loosen the bolts holding the target mounting bracket to the tilt cylinder clevis.

Align the target mounting bracket parallel to the tilt cylinder, and tighten the bolts.

3.Loosen the bolts holding the target bar to the target mounting bracket. Align the target bar parallel to the tilt cylinder, and tighten the bolts.

4.Loosen the bolts holding the proximity switch mounting bracket to the cylinder. Position the proximity switch face parallel to the target bar surface, and tighten the bolts. Next adjust the proximity switch out toward the target bar until and air gap of 3.5 - 5.0 mm (1/8 - 3/16 inch) is obtained. The proximity switch must not protrude past the proximity switch guard. Lock the proximity switch in position with its jam nut. Torque the jam nut to 6.7 N•m (5.0 ft-lb). 5.Start the engine. Position the bucket flat on the ground. Shut the machine off.

Loosen the bolts holding the target bar to the target mounting bracket. Slide the target bar away from the proximity switch until the face of the proximity switch is completely uncovered. Align the target bar parallel to the tilt cylinder, and tighten the bolts. 6.Turn the ignition switch to the on position (not accessory position). Do not start the engine. Position the bucket control lever to the full roll back position.

The electromagnetic detent should hold the control lever in this position. 7.Loosen the bolts holding the target bar to the target mounting bracket. Slowly slide the target bar towards the proximity switch. When the proximity switch face is nearly covered by the target bar, the switch will be activated, and the control lever will return to the center position. Tighten the bolts maintaining this location of the target bar. Verify that the 3.5 to 5.0 mm (1/8-3/16 inch) gap is maintained between the target bar and the proximity switch. 8.Make sure the proximity switch and all the mounting bolts are tight. Start the engine. Set the detent switch to the on position, and set the return to travel/ float detent switch to the return to travel position. Raise the lift arms to approximately the horizontal position. Position the bucket to the fully dumped position. Put the loader control lever in the roll back position, and verify that the electromagnet holds it in that position until the end of the target bar passes in front of the proximity switch. Lower the lift arms to the ground, and verify the bucket is flat on the ground.

Z-Bar Return To Dig Adjustment Procedure

3 2 1

5

4 6 7

BS00N079

1.Bell Crank 2.Target Mounting Bracket 3.Tilt Cylinder

4.Proximity Switch Guard 5.Proximity Switch 6.Proximity Switch Mounting Bracket 7.Target Bar 1.Start the engine. Raise the lift arms until they are approximately horizontal.

Fully dump the bucket. Lower the arms until bucket edge is on the ground.

Shut the machine off.

2.Loosen the bolts holding the target mounting bracket to the tilt cylinder eye.

Align the target mounting bracket parallel to the tilt cylinder, and tighten the bolts.

3.Loosen the bolts holding the target bar to the target mounting bracket. Align the target bar parallel to the tilt cylinder, and tighten the bolts.

4.Loosen the bolts holding the proximity switch mounting bracket to the tilt cylinder. Position the proximity switch face parallel to the target bar surface, and tighten the bolts. Next adjust the proximity switch face parallel to the target bar surface, and tighten the bolts. Next adjust the proximity switch out toward the target bar until an air gap of 3.5 to 5.0 mm (1/8 to 3/16 inch) is obtained. The proximity switch must not protrude past the proximity switch guard. Lock the proximity switch in position with its jam nuts. Torque the jam nut to 6.7 N•m (5.0 ft-lb). 5.Start the engine. Position the bucket flat on the ground. Shut the machine off.

Loosen the bolts holding the target bar to the target mounting bracket. Slide the target bar towards the proximity switch until the face of the proximity switch is com0letely covered. Align the target bar parallel to the tilt cylinder, and tighten the bolts. 6.Turn the ignition switch to the on position (not accessory position). Do not start the engine. Position the bucket control lever to the full roll back position.

The electromagnetic detent should hold the control lever in this position. 7.Loosen the bolts holding the target bar to the target mounting bracket. Slowly slide the target bar away from the proximity switch. When the proximity switch face is nearly uncovered, the switch will be activated, and the control lever will return to the center position. Tighten the bolts maintaining this location of the target bar. Verify that the 3.5 to 5.0 mm (1/8 to 3/16 inch) gap is maintained between the target bar and the proximity switch. 8.Make sure the proximity switch and all the mounting bolts are tight. Start the engine. Set the detent switch to the on position, and set the return to travel/ float detent switch to the return to travel position. Raise the lift arms to approximately the horizontal position. Position the bucket to the fully dumped position. Put the loader control lever in the roll back position, and verify that the electromagnet holds it in that position until the end of the target bar passes in front of the proximity switch. Lower the lift arms to the ground, and verify the bucket is flat on the ground.