Reference
Only
OPERATING CONTROLS AND PROCEDURES
2250 MAX-ER 2000 OPERATOR’S MANUAL
3-12
Published 01-08-13, Control # 049-05
TIRE INFLATION
Check tire inflation weekly. Inflate tires equally to:
•
Michelin 116 -120 psi (8,0 - 8,3 bar).
•
Yokohama 138 -148 psi (9,5 - 10,2 bar).
•
Goodyear 142 - 146 psi (9,8 - 10,1 bar)
NOTE:
The crane’s air system does not provide adequate
pressure for inflating the tires. An outside air supply
is required.
Inspect the tires for damage weekly. Contact a qualified tire
dealer for tire and rim servicing.
WHEEL NUT TORQUE
Check wheel nut torque monthly. Lubricate studs with Never-
Seez. Torque wheel nuts to 1,400 ft-lb (1 900 Nm).
MAX-ER DIAGNOSTICS
See Diagnostic Display Instructions in Section 3 of the Crane
Operator’s Manual for assistance in troubleshooting MAX-
ER 2000 problems.
OPERATING PRECAUTIONS
1.
Read and comply with instructions in this section and in
MAX-ER 2000 Capacity Charts before operating crane.
If equipped with a luffing jib, also read instructions in
Luffing Jib Operator’s Manual and in Luffing Jib Capacity
Charts.
2.
Make sure proper counterweight is installed.
3.
Read and comply with instructions in MAX-ER
Capacity Chart. Do not operate beyond limits given.
Automatic operation of wheeled counterweight
assembly does not provide overload protection.
4.
For Crane Software Version 5007 and higher, if trailer is
removed, use 0 Lb Wheeled Counterweight column
of applicable MAX-ER Capacity Chart.
5.
Make sure you use correct set of Capacity Charts for
required operating radius: 30 ft (9,1 m), 40 ft (12,2 m) or
50 ft (15,2 m) radius.
6.
To prevent structural damage when tires are on
foundation, do not travel or swing crane until wheel
assemblies have been rotated and pinned in proper
position.
7.
Make sure crawlers are blocked, if required per Capacity
Chart, before raising and lowering boom to and from
ground level (see instructions in MAX-ER Capacity
Chart Manual).
8.
Make sure load pin is calibrated and operating properly;
otherwise, wheeled counterweight assembly will not rise
off ground when required (see Sensor Adjustments in
Section 6 of this manual).
9.
Make sure left counterweight cylinder limit switch is
adjusted and operating properly; otherwise, wheeled
counterweight assembly will not rise off ground proper
amount when required (see Sensor Adjustments in
MAX-ER 2000 Operator’s Manual).
10. Make sure all operating limits — block-up, boom and jib
stops, boom and jib angle indicators, and Rated
Capacity Indicator/Limiter (RCL) — are installed and
operating properly. See Section 6 of this manual for
adjustment procedures. See separate Rated Capacity
Indicator/Limiter Manual for operation and calibration of
the RCL.
11. Select and confirm desired main mode — Standard,
Drum 5 [Luff Jib], Drum 5 [Aux Hst] — and MAX-ER
mode for operation with wheeled counterweight
assembly installed. Wheeled counterweight assembly
will not rise and lower automatically if MAX-ER
mode is not selected.
Wheeled counterweight assembly remains in its last
position — up or down — if MAX-ER mode or engine is
turned off during operation.
12. Operate only with crane on a firm uniformly supporting
surface.
With load, crane must be level to within 1 percent (0.5
°
)
of grade.
W i t h o u t l o a d , s e e M a x i m u m A l l o w a b l e Tr a v e l
Specifications Chart.
Make sure foundation under crane and under wheeled
counterweight assembly is at same level, plus or minus
12 in (305 mm). Mast can buckle if counterweight is
lowered too far below grade.
13. Do not operate, to include raising boom and luffing jib
from ground level, if wind exceeds allowable limits given
in Capacity Charts provided with crane and luffing jib.
Contact your local weather station for wind velocity.
14. Be aware of increased tail swing with wheeled
counterweight assembly installed. Assembly can strike
objects or personnel in area of travel and swing paths.
WARNING
Observe following precautions to prevent tipping or
structural failure of attachment.
