N4523A18R1058_Attachment_J-1__SOW_Errata_2_YT_800_Posted_28JUN2018.pdf
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- Maintenance, Preservation, and Repair of YT-800
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- N4523A18R1058
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SOW Errata 2 includes revised requirements for Schottle units, as mentioned in Amendment 0003.
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3.7 MAIN PROPULSION REPAIRS: Accomplish repairs of the main propulsion system and assemblies as follows:
Errata 2 3.7.1 Schottel Z-Drive Repairs: (CDRL A032) Accomplish One, and 5-year maintenance intervals, Visual Test Inspections (VT) and equipment replacement requirements for each SRP 1012 FP Schottel Z-Drive system in accordance with the requirements of 14120946-1 and as follows:
3.7.1.1 Remove Quantity (2 EA) No. 1 and No. 2 Shottel Z drives: Remove existing and install new the equipment listed in 4.3, 4.4 and 4.5.
3.7.1.1.1 Insure the previously removed in 3.7.1.1 Quantity (2 EA) Shottle Z drives are properly installed into the transport crates listed in 4.4 and returned as GFM.
3.7.1.1 Provide the services of Certified Technical Representative(s) to assist with the disassembly, inspection, repair, assembly, parts replacement, adjustment, and testing.
3.7.1.2 Accomplish Power Transmission repairs as follows:
3.7.1.2.1 Sample and analyze lubrication oil for the following:
Water <1%, Iron <20 mg/kg (ppm), Copper <15 mg/kg (ppm), Oxidation <+1.0 over new oil, PQ-index <5um particle size.
3.7.1.2.2 Accomplish VT each planetary gear system, oil
lubrication system, and steering system for: deterioration, pitting, cracks, loose or missing fasteners, and areas of damage or distortion.
3.7.1.2.3 Remove existing and install new power transmission
and steering planetary gear lubricating oil meeting the performance characteristics of
CHEVRON MAROPA 150.
3.7.1.2.4 Remove existing and install new quantity (2 each) oil filters.
3.7.1.2.5 Remove existing and install new each flexible oil and hydraulic hose, associated fitting, fastener, and O-ring for each planetary gear system, oil lubrication system, and steering system in accordance with the requirements of paragraph 3.12.2.1 through 3.12.2.6 of this SOW.
3.7.1.2.6 Drain Hydraulic Oil from Port and Starboard Z Drive Head Tanks and SRP L.O Supply Tank.
3.7.1.2.7 Open and wipe clean Port and Starboard Z Drive Head Tanks .and SRP L.O Supply Tank.
3.7.1.2.8 Template existing and replace with new quantity 2 (EA) Head Tank gaskets.
3.7.1.2.9 Fill Port and Starboard Z Drive Head Tanks and SRP
L.O Supply Tank with lubricating oil meeting the performance characteristics of
CHEVRON MAROPA 150
3.7.1.3 Accomplish electronic system repairs as follows:
3.7.1.3.1 Remove existing and install new switch box Air filter.
3.7.1.3.2 Accomplish cleaning of all relay contacts and ensure electronic cards remain free of grease, dirt, and dust.
3.7.1.3.3 Accomplish functional testing of each audible and visual alarm, warning system, and limit switch.
3.7.1.4 Accomplish Hydraulic system repairs as follows:
3.7.1.4.1 Remove existing and install new each hydraulic pump flexible oil hose.
3.7.1.4.2 Remove existing and install new Quantity (1 EA) oil filter.
3.7.1.4.3 Accomplish hydraulic system tightness test using
system operating pressure. Inspect piping, fittings and components for evidence of external leakage and/or deformation. Allowable leakage: None.
3.7.1.4.4 Accomplish cooling system tightness test using system operating pressure. Inspect piping, fittings and components for evidence of external leakage, cracks, and/or deformation. Allowable leakage: None.
3.7.1.4.5 Accomplish visual inspection (VT) of each Heat
Exchanger tube for cleanliness, obstructions, and scale. Allowable obstructions: none.
3.7.1.4.5.1 Replace deteriorated Zincs equal in
performance to Rod-Type Zinc Protectors using 14120946-1 for guidance.
3.7.1.5 Accomplish rudder propeller repairs as follows:
3.7.1.5.1 Record and document data and location of each
propeller and hub prior to removal and cleaning.
3.7.1.5.2 Protect stamped data area of hub prior to and during cleaning, ensuring data remains legible.
3.7.1.5.3 Remove and clean each propeller.
3.7.1.5.4 Accomplish VT of each propeller for: deterioration, pitting, cracks, loose or missing fasteners, and areas of damage or distortion.
3.7.1.5.5 Accomplish balance of each propeller.
3.7.1.5.6 Install each propeller in original location recorded in 3.7.1.5.1.
3.7.1.6 Accomplish operational testing. Coordinate testing with the requirements of 3.13.
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