99903514:TELESCOPIC CRANE: 3-2 SECTION 3: REPAIR
3-1: GENERAL
The information supplied in this section of the
manual is designed to help you service and
repair of your IMT telescopic crane. Information
on inspection, lubrication and general mainte-
nance information can be found in the previous
sections of this manual. Before attempting to
perform any service work, the machine must be
shut down as outlined in the Operation Section.
3-2: REPAIR PRECAUTIONS
Maintaining your crane regularly keeps the crane
operating safely.
Prior to starting repairs on your telescopic
crane:
1. Park the crane in an area where other
equipment is not operating and where there
is no through traffic.
2. Set the carrier vehicle’s parking brake. Use
wheel chocks to prevent vehicle movement.
3. Position the crane in its stowed position if
possible, or with the boom supported to
prevent boom collapse during maintenance.
4. Place all controls in the “OFF” position and
disable any means of starting the carrier
vehicle or powering the crane.
5. Disconnect the PTO.
6. Secure sheaves and/or load blocks so they
will not swing or fall during maintenance.
7. Relieve the hydraulic oil pressure from all
circuits before disconnecting any hydraulic
fittings or components.
8. Replace any parts with only factory ap-
proved replacements.
Prior to putting your telescopic crane back
into service:
1. Replace all shrouds, guards and safety
devices removed during maintenance.
2. Remove all trapped air in the hydraulic
system to prevent erratic operation.
3. Clean grease and oil from controls.
4. Make certain all decals are present and
legible.
5. DO NOT return to the worksite until all
repairs are proven to be in proper working
condition.
3-3: SYSTEMATIC REPAIR PROCEDURE
1) Begin repairs by studying the hydraulic
schematics and systematically approaching
the problem.
- Locate the source of the problem.
- List possible causes.
- Devise checks.
- Conduct checks in a logical order to deter-
mine cause.
- Consider the remaining service life of
components against the cost of parts and
labor needed to replace them.
- Make the necessary repair(s).
- Re-check to be sure nothing has been
overlooked.
- Functionally test the new part.
2) If you cannot determine or correct the
problem, contact your local distributor or the
IMT Technical Service Department. Have
your parts manual, model number, and
serial number on hand when you call. This
information is usually located on the serial
number placard posted on the crane mast
or lower boom.
NOTE
SAFETY IS THE MOST IMPORTANT CON-
SIDERATION WHEN WORKING AROUND
CRANES. STAY CLEAR OF MOVING
PARTS, UNDERSTAND THE JOB, AND
USE COMMON SENSE.
CAUTION
ALWAYS LABEL WIRES, CABLES &
HOSES WHEN DISASSEMBLING.
20030115
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