Mec 3369RT, Service & Parts Manual

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Page 19 XX69RT Series - Service & Parts Manual
November 2022 Section 6 - Maintenance
charged. Proceed to step 10.
• Result:
One or more battery cells display a specific gravity from 1.269 to 1.218. The battery
is still usable, but at a lower performance so will need to be recharged more often. Proceed
to step 11.
• Result:
One or more battery cells display a specific gravity from 1.217 to 1.173. The battery
is approaching the end of its life. Proceed to step 11.
• Result:
The difference in specific gravity readings between cells is greater than 0.1 OR the
specific gravity of one or more cells is less than 1.172 or less. Replace the battery.
10. Check the battery acid level. If needed, replenish with distilled water to
1
/
8
in (3 mm) below the
bottom of the battery fill tube. Do not overfill.
11. Install the vent caps and neutralize any electrolyte that may have spilled.
B-2 Inspect the Electrical Wiring
• Tools will be required to perform this procedure.
Maintaining electrical wiring in good condition is essential to safe operation and good machine
performance. Failure to find and replace burnt, chafed, corroded or pinched wires could result in
unsafe operating conditions and may cause component damage.
Electrocution / burn hazard. Contact with electrically charged circuits
could result in death or serious injury. Remove all rings, watches and
other jewelry.
1. Inspect the following areas for burnt, chafed, corroded and loose wires:
• Ground control panel
• Hydraulic tray
• Engine tray
• Scissor arms
• Platform controls
2. Inspect for a liberal coating of dielectric grease in the following locations:
• Between the ECM and platform controls
• All wire harness connectors
• Level sensor
3. Turn the key switch to ground control and turn the ground red Emergency Stop button clockwise
to the on position pull out the platform red Emergency Stop button to the on position.
4. Start the engine and raise the platform approximately 10 ft (3 m) from the ground.
5. Lift the safety arm, move it to the center of the scissor arm and rotate up to a vertical position.
6. Lower the platform onto the safety arm.
Crushing hazard. Keep hands clear of the safety arm when lowering the
platform.
7. Inspect the center chassis area and scissor arms for burnt, chafed and pinched cables.
8. Inspect the following areas for burnt, chafed, corroded, pinched and loose wires:
• ECU to platform controls
• Power to platform wiring