Lull 944E-42 Service Manual - Manual (Page 121)

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.
~
MU5940
644E Shown
19
20
21
22
23
24
25
27 ~
26