SANY SCC1000C - Page 79

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Section 1 Maintenance
SCC1000C Crawler Crane — Maintenance Manual
Position of Boom Lufng Winch Brake (Built-In)
Check the brake of the luffing reducer in the
following conditions:
-- When lifting with the full extensional boom + the
full extensional jib or the full extensional boom,
-- When lifting the max. load,
Check the brake when lifting the max� load:
1. Lift up the load until it is barely above the ground
(around 10cm (3/8″).
2. Suspend the load lifting operation.
-- With the engine running, do not perform any
other actions.
-- All control handles in the operator’s cab are in
the neutral position.
3. Mark “×” on the drum and on the upperworks
bracket of the lufng reducer.
4. Keep the crane under the load working condition
for around 2 minutes.
5. Check the sign “×” on the winding drum and on
the upperworks bracket:
-- The sign “×” remains there = the brake works
properly
-- The sign “×” is moved (lufng winch slipping) =
the brake must be further examined.
Before performing each lifting operation, check
the brake on the boom lufng reducer.
1. Perform hoisting as described in the installation
instructions (Chapter 4).
2. While performing the lifting operation, lift up the
Brake
Hydraulic motor
last equipment component parked on the ground
until it barely leaves the ground.
3. Stop the load lifting operation.
-- With the engine running, do not perform any
other actions.
-- All control handles in the operator’s cab are in
the neutral position.
4. Make a sign “×” on the corresponding winding
drum and on the A-frame.
5. Keep the crane under the load working condition
for around 2 minutes.
6. Check the sign “×” on the winding drum and on
the A-frame:
-- The sign “×” remains there = the brake works
properly
-- The sign “×” is moved (lufng winch slipping) =
the brake must be further examined.
T103 4004
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