Lull 944E-42 Service Manual User Manual download pdf (Page 121)

100

101

4.17

Model 644E-42/944E-42 Rev. 6/04

Cab and Covers

b. Installation

1. Slide the sensor (17) onto the linkage assembly

shaft (18).

2. Lock in place on shaft using a flat washer (16) and

snap ring (15).

3. Slide the sensor (4) and linkage assembly (9) into

the slot (13) on the mounting plate (7).

4. Line up the hole in the clevis on the linkage

assembly (9) with the hole on the throttle pedal stop

plate (14).

5. Secure clevis with the clevis locking pin (8).

6. Center and secure the sensor to the cab mounting

bracket (7) with two slotted pan head screws (10),

flat washers (11) and nuts (12). Torque nuts to

2-4 lb-ft (1,5-3 Nm).

7. Connect the ECM cab harness connector (3) to the

throttle rotary sensor (4).

8. Start the engine. Engine rpm should increase as

soon as the throttle pedal is depressed and continue

to increase until the throttle pedal is fully depressed.

c. Throttle Pedal Adjustment

1. During the full throttle check

•DO NOT operate any hydraulic function.

•DO NOT steer or apply any pressure to the

steering wheel.

• Keep the transmission in (N) NEUTRAL.

2. With the engine running and the transmission in

(N) NEUTRAL, lightly depress the accelerator

pedal (19) to the full-throttle position.

3. Check the maximum engine rpm with a tachometer.

rpm should be 2650-2750 rpm.

4. If engine rpm is above or below the specification

(2650-2750 rpm) adjust the limit-stop screw (25).

5. Remove the screws on the lower dash panel (26)

and side console access panel (27).

6. To adjust, loosen the locking nut (21) on the limit-

stop screw (20). Lengthen the screw to decrease

engine rpm and shorten the screw to increase

engine rpm.

7. After achieving desired maximum rpm, hold the limit-

stop screw (20) while tightening the locking nut (21)

against the weldment bracket.

8. Check the distance between the front edge of the

throttle pedal and the floor. A minimum clearance

(22) of 1/8" is required.

9. Check the throttle pedal return spring (23); there

should be very little tension on the spring when the

throttle pedal is at rest.

10. If the spring is stretched, decrease spring tension by

loosening the locking nut (24) and turning the

adjusting stop screw (25) clockwise.

11. Recheck the engine rpm and check that 1/8"

pedal-to-floor clearance still exists.

12. Shut the engine off. At the engine, remove any slack

in the throttle. Refer to “644E-42 Fuel Lines and

Throttle Installation” on page 7.43 steps 19 through

22.

13. Install and secure the lower dash (26) and right

console access panels (27) using capscrews and flat

washers. Torque capscrews to 7 - 8 lb-ft

(9,5 - 10,6 Nm).

WARNING: Avoid prolonged engine

operation in closed areas with inadequate

ventilation. Failure to properly ventilate

exhaust fumes can result in death or serious

injury.

MU594

644E Shown

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Lull 944E-42 Service Manual User Manual Page 121

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