INTRODUCTION 2250 SERVICE/MAINTENANCE MANUAL
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Published 11-06-15, Control # 040-13
Maintenance Instructions
To ensure safe and proper operation of Manitowoc cranes,
they must be maintained according to the instructions
contained in this manual and the Operator Manual provided
with the crane.
Crane maintenance and repair must be performed by
personnel who by reason of training and experience are
thoroughly familiar with the crane’s operation and required
maintenance. These personnel shall read the Operator
Manual and Service/Maintenance Manual before
attempting any maintenance procedure. If there is any
question regarding maintenance procedures or
specifications, contact your Manitowoc dealer for assistance.
Training/qualification of maintenance personnel is
responsibility of crane owner.
Safe Maintenance Practices
1. Perform the following steps (as applicable) before
starting a maintenance procedure:
a. Park the crane where it will not interfere with other
equipment or operations.
b. Lower all loads to the ground or otherwise secure
them against movement.
c. Lower boom onto blocking at ground level, if
possible, or otherwise secure boom against
dropping.
d. Move all controls to off and secure all functions
against movement by applying or engaging all
brakes, pawls, or other locking devices.
e. Stop engine and render starting means inoperative.
f. Place a warning sign at start controls alerting other
personnel that crane is being serviced and the
engine must not be started. Do not remove sign until
it is safe to return crane to service.
2. Do not attempt to maintain or repair any part of crane
while the engine is running, unless absolutely
necessary. Wait for engine and machinery to cool before
servicing them.
If the engine must be run, perform the following steps to
prevent injury:
- Keep your clothing and all parts of your body away
from moving parts.
- Use extreme caution when working around
machinery. It can be extremely hot.
- Maintain constant verbal communication
between person at controls and person
performing maintenance or repair procedure.
3. Wear clothing that is relatively tight and belted.
4. Wear appropriate eye protection and approved hard hat.
5. Never climb onto or off a moving crane. Climb onto and
off crane only when it is parked and only with
operator’s permission.
Use both hands and handrails, steps and ladders
provided to climb onto and off the crane.
Lift tools and other equipment which cannot be carried in
pockets or tool belts onto and off the crane with hand
lines or hoists.
6. Boom and gantry are not intended as ladders. Do not
attempt to climb lattice work of boom or gantry to get to
maintenance points. If boom or gantry is not equipped
with an approved ladder, lower them before performing
maintenance or repair procedures.
7. Do not remove cylinders until working unit has been
securely restrained against movement.
8. Pinch points are impossible to eliminate; watch for them
closely.
9. Pressurized air, coolant, and hydraulic oil can cause
serious injury. Make sure all air, coolant, and hydraulic
lines, fittings, and components are tight and serviceable.
Do not use your hands to check for air and hydraulic
oil leaks:
• Use a soap and water solution to check for air leaks
(apply to fittings and lines and watch for bubbles).
• Use a piece of cardboard or wood to check for
coolant and hydraulic oil leaks.
10. Relieve pressure before disconnecting air, coolant, and
hydraulic lines and fittings.
WARNING
Burn and Inhalation Hazards!
Temperature of exhaust and exhaust components for Tier
4 engines can be higher than other engines.
To prevent death or serious injury:
• Avoid physical contact with exhaust gases and
exhaust system components.
• Keep all flammable materials away from the exhaust
system to prevent fire.
• If necessary to service crane while the engine is
running, inhibit (turn off) DPF regeneration using
switch in cab to prevent higher exhaust temperatures.
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