Load Hoist Mechanism; Check The Pressure Roller On The Winch; Check The Limit Switch On The Winch - Manitowoc GHC75 Maintenance Instructions Manual

Crane Care
8

Load hoist mechanism

8.1 check the pressure roller on the winch

Personnel
Service Technician
The machine operator
Safety precautions
Screw tightening torque in Nm
Quality M6 M8
8.8 10 23
10.9 14 34
12.9 16 40

8.2 Check the limit switch on the winch

Personnel
Service Technician
21.12.2017
Interval
Particular interval: before/after long usage periods,
The winch pressure roller is pre-tensioned. There is a risk of
n
clamping. Ensure that the winch is disconnected from power
and prevented from switching back on during work on the pres-
sure roller.
Only work on the winch when the machine is off and not under
n
load.
Protective equipment:
Special tool:
1. Check if the springs installed are pressing the pressure roller
into the rope in the drum direction.
Check
2.
n
n
M10 M12 M14
46 79 125
67 115 185
79 135 220
Interval
Particular interval: every 100 OH
Preliminary
GHC75 Telescopic crane
Protective clothing
n
Safety goggles
n
Hard hat
n
Protective gloves
n
Fall arrest safety harness
n
Spanner
n
if the pressure roller locking screws' counter nuts have
loosened due to operational vibrations.
if the sheave turns freely.
M16 M18 M20
195 280 395
290 400 560
340 470 660
Load hoist mechanism
Check the limit switch on the winch
M22 M24
540 680
760 970
890 1150
M30
1350
1950
2300
79