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Mid-Mount Ascendant Aerial Tower / 5-9
MAINTENANCE
5-5.
Primary Inspection
NOTE:
Perform this inspection before placing into service and with each inspection thereafter.
Table 5-4: Primary Inspection
ITEM NO.
ITEM TO CHECK/SERVICE
PROCEDURE
1
PTO Operation
Check that switch operates properly—this includes the aerial PTO switch and aerial
master switch.
Check that PTO indicator light is functional.
Check that no excessive gear mesh noise is present during engagement of PTO.
Verify the operation of the neutral safety interlock. This is checked by shifting the
transmission into drive or reverse—the PTO should disengage in both gears. Also,
check for PTO disengagement with the transmission in neutral and the parking brake
released.
2
Hydraulic Oil Level
NOTE:
The aerial must be cradled with all stabilizers in the stowed position to
obtain a proper oil reading.
Check the oil level by using the sight level gauge located in front of the right middle
stabilizer.
3
Hydraulic Pressure Lines
These lines should be checked for leakage at fittings and at crimp-on ends. Also,
inspect hose routing and check for any signs of hose chafing.
4
Stabilizer/Aerial Interlocks and
Indicators
With the stabilizers stowed, try to operate the aerial up function using the turntable
control console controls. If there is no aerial movement, or increase on the system
pressure gauge, the interlock is functioning properly.
5
Stabilizer Pads
Inspect the stabilizer pads for proper installation and freedom of movement. These
are the feet attached to the bottom of the jack beams on which the stabilizers sit.
6
Stabilizer Work Lights and Flashing
Lights
Check the work lights (white lights under the stabilizer wells) for proper operation.
Check the jack flashing lights on the inside of the jack beam. Also, check the lens for
any damage.
7
Electrical Wiring and Components
Inspect electrical wires and components for loose connections, corrosion, arcing,
missing or damaged mounting hardware, chafing or wear.
8
Conduit Track
Check operation and tension of plastic conduit track.
Check for excessive wear and proper routing of hoses and cables through the plastic
conduit track.
9
Sheaves and Carrier Assembly
Check the sheaves and carrier assembly for damage, and whether it travels properly
through the guide brackets while the aerial is extending and retracting.
10
Wire Rope (Cable)
Check for proper cable tension, see service group 8300-P-093, Wire Rope (Cable)
Replacement/Adjustment.
11
Waterway
Check waterway for proper alignment and lubrication.
12
Safety Decals
Make sure that all decals and other operational decals are in place.
13
Intercom System
Check intercom system for proper operation. If there is an intercom located at the
pump panel, it should also be inspected.
14
Rung Covers
Check that rung covers are secure and do not turn.
15
Breathing Air System
Check breathing air system for leakage and proper operation (optional equipment).
If applicable, open tank valve to charge low pressure side. Close tank valve and note
the pressure on the low pressure gauge. Let system sit for a one-hour period. After a
one-hour period, check for pressure drop.
16
Equipment Mounting
Check that equipment mounted on ladder is secure. Check for cracks, wear, or other
damage to mounting devices. Ensure that unauthorized equipment mounting has not
been added.
17
Aerial Function Check
Perform aerial function check from the turntable control console and from the basket
control panel.