Reference
Only
Manitowoc
Published 01-08-13, Control # 049-05
4-3
2250 MAX-ER 2000 OPERATOR’S MANUAL
SET-UP AND INSTALLATION
4
NOTE:
See MAX-ER 2000 Capacity Charts for capacity
limitations and counterweight requirements for
operation with mast only (wheeled counterweight
removed).
BLOCKED CRAWLERS
To prevent crane from tipping, some boom lengths must be
raised and lowered over the front of blocked crawlers. See
the MAX-ER Capacity Charts and Luffing Jib Raising
Procedure in Capacity Chart Manual for blocked crawler
requirements.
RETAINING CONNECTING PINS
All connecting pins are retained with keeper plates, snap
pins, or cotter pins. Do not operate crane until all keeper
plates, snap pins, and cotter pins are installed. Spread
all cotter pins.
REMOVABLE LACINGS
The 20 ft (6,1 m) and 40 ft (12,2 m) #44 inserts are equipped
with removable diagonal lacings. This design feature allows
the lacings to be removed so that jib sections (fixed or luffing)
can be stored inside the boom inserts during shipment.
User supplied blocking can be placed across the bottom
chords for supporting the jib sections during shipment. It is
user’s responsibility to securely fasten blocking and jib
sections so sections cannot move during shipment.
Prior to using the inserts, all blocking must be removed and
the removable diagonal lacings must be reinstalled as
follows:
1.
Thoroughly clean all dirt from mating surfaces between
lacings and supports on inserts.
2.
Reinstall proper number of removable lacings in each
insert with bolts and stop nuts as shown in Figure 4-2.
3.
Securely tighten nuts.
MAX-ER ASSEMBLY PROCEDURE
Prepare Crane
The 2250 crane to which the MAX-ER attachment will be
assembled must be specially prepared and modified.
Contact Crane Care Customer Service at factory to
determine if your crane is properly prepared and modified.
Perform the following steps if your crane is equipped with an
existing front-end attachment (boom or boom-luffing jib).
1.
Position crane in selected assembly area and block
crawlers if necessary.
2.
Lower existing attachment onto blocking at ground level.
3.
Remove load block and/or weighted hooks.
4.
Store load lines on drums.
5.
Disconnect block-up limit cord from crane at cable reel
on boom butt. Connect electric cord to shorting plug on
left side of upperworks adapter (see Block-Up Limit
Control in Section 6 of this manual).
NOTE:
If this step is not performed, operating limit alert will
come on to indicate a block-up fault when engine is
started. Also, load drums will not operate in up
direction and boom hoist will not operate in down
direction.
6.
Unplug electric cord from block-up limit cable reel at
junction box on boom top and wind cord onto reel.
7.
Pin equalizer to rails on boom butt and disconnect boom
straps from equalizer (see Boom Rigging Procedure in
Crane Operator’s Manual).
WARNING
Tipping Hazard!
Install proper counterweight before operating crane.
WARNING
Falling Boom and Mast!
To prevent collapse of boom and mast, install removable
diagonal lacings before lifting load.
P835
Boom
or Mast
Insert
7/8-9UNC x 2-1/2 in
Grade 5 Hex Bolt
Removable
Diagonal
Lacing
7/8 in Elastic
Stop Nut
Clean all dirt from between lacings and
lacing supports. Securely tighten nuts.
FIGURE 4-2
