Pierce Mid-Mount Ascendant Aerial Tower, Manual, Page: 119 / 132

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Mid-Mount Ascendant Aerial Tower / 5-13
MAINTENANCE
5-8. Four-Hundred (400) Hour/Annual Inspection
NOTE: Every 400 hours of aerial operation or annually (whichever occurs first), perform the primary
inspection, the 25-hour/quarterly inspection, the-50 hour/annual inspection, then the following
maintenance procedures:
Table 5-7: 400-Hour/Annual Inspection
ITEM NO. ITEM TO CHECK/SERVICE PROCEDURE
1
Hydraulic Filters Replace hydraulic return and pressure filters. Emphasis should be made that dirt is a
major factor in hydraulic system failures.
2
Hydraulic Oil Pierce Manufacturing Inc. recommends taking a sample of hydraulic oil and having it
analyzed by a local company. The sample should be taken following 30 minutes of
aerial operation.
3
Rotation Gear Box Oil Level Remove the fill plug from the rotation gear box. The oil level should be to the bottom
of the fill hole. See
Figure 5-3
.
4
Electro-Hydraulic Swivel Bolts Re-torque the electro-hydraulic swivel mounting bolts. For specifications related to
your apparatus, see the “Specifications for Setup and NFPA Testing” data placard
located on the aerial.
5
Rotation Bearing Bolts Re-torque the rotation bearing to torque box and turntable mounting bolts (top and
bottom). For specifications related to your apparatus, see the “Specifications for Setup
and NFPA Testing” data placard located on the aerial.
6
Pinion Gear Backlash Check the pinion gear backlash and adjust if necessary. For specifications related to
your apparatus, see the “Specifications for Setup and NFPA Testing” data placard
located on the aerial.
7
Boom Support Re-torque the boom support mounting bolts. For specifications related to your
apparatus, see the “Specifications for Setup and NFPA Testing” data placard located
on the aerial.
8
Rotation Gear Box Bolts Re-torque the rotation gear box drive bolts on the turntable:
•
Ring to turntable bolts.
• Ring to planetary drive bolts.
For specifications related to your apparatus, see the “Specifications for Setup and
NFPA Testing” data placard located on the aerial.