Manitowoc 2250 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-06-15, Control # 040-13 5-23
2250 SERVICE/MAINTENANCE MANUAL HOISTS
5
11. Adjust each band guide as follows:
a. Rotate rear drum clutch so band guide is in access
hole.
b. With rear drum clutch applied, check clearance
between band guide and clutch band with a feeler
gauge. Clearance should be 1/32 in (1 mm).
c. If necessary, loosen mounting screws and
reposition band guide to obtain specified clearance.
Then securely tighten mounting screws.
12. Reinstall cover over access hole.
Band Disassembly and Assembly Notes
Each clutch band consists of three segments fastened
together with a connecting plate and cap screws as shown in
Figure 5-17
, View A. This arrangement makes the band
easier to disassemble.
When reassembling a clutch band, match the numbers
stamped on each end of the band segments with the number
stamped on the connecting plates for proper assembly.
Cylinder Rod Marking
See Figure 5-18 for the following procedure.
If a new cylinder is installed, it must be marked before
installation to assure proper clutch adjustment. You will need
a 100 psi (6,9 bar) shop air supply.
1. With cylinder fully retracted, place a temporary mark on
cylinder rod flush with cylinder body. Use a marker; do
not use a file or hacksaw blade.
When cylinder rod is retracted, distance from cylinder
end to center of cylinder rod hole is 1-1/16 in (27 mm).
2. Apply air to extend cylinder so temporary mark is 3/8 in
(10 mm) from end of cylinder.
3. Mark cylinder rod 1/4 in (6 mm) from end of cylinder with
file or hacksaw blade (see Mark B, Figure 5-18
).
4. Apply air to fully extend cylinder rod. Make second mark
on cylinder rod 3 in (76 mm) down from Mark B (see
Mark A, Figure 5-18
).
5. Remove temporary mark.
GEARBOX COOLING BLOWER
See Figure 5-19 for the following procedure.
Remove the blower assemblies and thoroughly clean them
at the following intervals:
Every 200 hours of Operation: Humid climate when
operating in extremely dusty conditions (example:
combination of cement dust and humidity).
Every 500 hours of Operation: Normal operating
conditions.
Disconnect electric plug (1) from plug on crane.
Support blower (2) so it cannot fall and remove bolts (3).
Remove blower, guard (4), and inlet elbow (5).
Thoroughly clean inside of blower using compressed air jet.
Use a putty knife to loosen material as required.
Make sure squirrel cage turns freely.
Thoroughly clean inlet elbow.
Make sure exhaust hole in shroud (6) is open.
Reassemble guard (4) and blower (2) to shroud (6).
Clamp inlet elbow (5) to blower so elbow points down.
Connect electric plug (1) to plug on crane.
Start engine and test blower for proper operation. Air should
flow freely from exhaust hole.
CAUTION
Do not mix band segments from one drum with those from
another drum. Always keep band segments in a matched
set, or assembly will be difficult.

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English