TB 1-1520-238-20-116
NOTE
The "Y" hoses in paragraph 1.35 (mentioned in substep 25) above will be replaced with the
dual hydraulic manifold type. The "Y" hoses are an authorized substitute if the dual hydraulic
manifold type is not available. To drain the aircraft employing "Y" hoses, disconnect the re-
turn line at the Auxillary Ground Power Unit (AGPU) and allow the hydraulic fluid to drain
into a 10--gallon bucket.
(26) Switch AGPU hydraulic output to OFF and decrease hydraulic pressure to 500 psi, then
switch hydraulic power to OFF.
(27) While monitoring utility manifold reservoir level, move RETURN/BYPASS to BYPASS posi-
tion until proper reservoir level is reached, then switch back to OFF position.
(28) Shut down AGPU and disconnect and store hoses and manifold.
(29) Perform primary and utility hydraulic maintenance operational check (MOC) in accordance
with TM 1--1520--238--T or TM 1--1520--Longbow/Apache (IETM).
10. Supply/Parts and Disposition.
NOTE
The AH--64 Program Management Office (PMO) will furnish the hydraulic sample
tools (See Figure 1) through the Logistics Assistance Office (LAR). If a LAR cannot
be reached, contact the logistics point of contact (Refer to paragraph 16.b in this TB.
a. AH--64 Series Parts Required. (See Figure 1).
Nomenclature
Quantity
Part Number and/or NSN
AH64HST (AH64HDC)
Hydraulic Sampling Tool
1 Ea.
b. Bulk and Consumable Materials.
Nomenclature
Quantity
Part Number and/or NSN
4330--01--220--3020
Filter Element, Fluid (HP, 3--micron)
1 Ea.
4330--01--220--3021
Filter Element, Fluid (LP, 10--micron)
1 Ea.
6650--00--680--2233
Dessicant, Activated
1 Ea.
8125--00--933--4414
Bottle, Oil Sample
120 Ea.
8105--00--837--7754
Sack, Shipping
1000 Ea.
9150--01--009--7709
Fluid, Hydraulic, MIL--H--83282
10--gallon
drum
c. Disposition of Hazardous material. In accordance with Environmental protection Agency (EPA) di-
rectives as implemented by environmental coordinator (AR--200--1).
11. Special Tools and Fixtures. Required. (See Figure 1.)
a. Parts Required.
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