LGMG SR2669D Service Manual

Service Manual of Rough Terrain Mobile Elevating Work Platform
93
 GCU box
 Hydraulic valve group
 Battery wire
 PCU box
5. Turn the key switch to PCU position, and pull
up the red emergency stop buttons of GCU
and PCU.
6. Lift the platform to a height of 4m above the
ground.
7. Lift the safety arm, move it to the middle of
the scissor bushing, and rotate it upward
until it is vertical.
8. Lower the platform until the safety arm is in
full contact with the bushing.
△
! Risk of crushing
When lowering the platform, be sure to
keep the hands in the correct position of the
safety arm.
9. Check for burnt, scratched, corroded, bent or
loose wires in the chassis and scissor areas.
10. Check for burnt, scratched, corroded, bent or
loose wires in the following areas:
 Scissor arm
 Part between the ECU and the platform
 Connector of the harness connected to
the platform
11. Check the free coating of insulating oil
applied to the following parts:
 Connector of the harness between ECU
and PCU
 Connectors of all harnesses of the level
sensor
12. Lift the platform and return the safety arm to
the installation position.
13. After lowering the platform to the retraction
position, shut down the machine
Checking the battery
Stay away from the fireworks, and remove
all rings, watches and other ornaments. Wear
goggles, protective gloves and protective clothes
if necessary. Avoid touching the spilled electrolyte
with hands or other parts of the body. Use soda
and water to neutralize the spilled electrolyte.
It is essential to keep the battery in good
condition to achieve superior machine
performance and safe operation. If the voltage is
improper or the cable or wire is damaged, the
parts may be damaged and hazards may be
caused.
Inspection of maintenance-free lead-acid
battery:
 Check if the battery lock lever is stable.
 Check if the battery cable is connected
firmly, without corrosion.
 Check if the electrolyte leaks, and if the
battery is dry and clean.
Check the electric eye status quarterly (for
maintenance-free lead-acid battery).
Check the color of the battery hydrometer as
shown:
Fig. 5.1 Battery hydrometer
Hydrometer
color
Meaning and measures
White
Lack of electrolyte; please shut
down the machine to stop using it
Black
Undervoltage or damage
Green
Measure the voltage of each battery,
and if the voltage is lower than 11V,
it means the battery is damaged; if
the voltage is between 12.4V-12.7, it
means the battery is in good
condition
 If the color of the battery hydrometer is
green and the voltage is above 12V, but
the starter cannot be driven, the trained
and qualified maintenance personnel shall
conduct further inspection of the battery.
Battery charging:

LGMG SR2669D Specifications

General

Brand	LGMG
Model	SR2669D
Category	Lifting Systems
Language	English