MIL-T-62110 Trucks, Maintenance: With Rotating Hydraulic Derrick, 32,000 To 44,500 Gvw, 4X2, 4X4, 6X4, And 6X6, CommercialThis specification covers maintenance trucks with a rotating and telescoping hydraulic derrick. Vehicles procured under this specification are commercial items which are warranted by the manufacturer as specified in acquisition documents.

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MIL-T-6211OG

conditions and rotated up and down the grade to determine conformance to 3.3.4 and 3.3.5. The derrick shall be placed transverse to the longitudinal centerline of the vehicle and the vehicle engine shut off. The position of the upper head sheave relative to a fixed point shall be noted and recorded. The position of the upper head sheave relative to the same fixed point shall be noted after an elapsed period of not less than one hour to determine conformance to 3.3.7.

4.4.5 Dielectric tests. When an insulated section and baskets are furnished, dielectric tests shall be conducted at line-to-ground voltages specified in 3.7.2 or equivalent dc voltages and as follows. Except for the basket immersion test, all tests shall be conducted with all components assembled for operational use.

(a) Secure a cable from the energized conductor bar to the following areas and apply the required voltage. The total leakage in milliamperes, if any, will be indicated on the test unit and recorded.

(1) Basket bottom, through the insulated derrick to ground, with and without basket

liner

(2) Basket front, through the insulated derrick to ground, with basket liner

(3) Basket attachment, through the derrick to ground, with and without basket liner. (b) Disconnect the ground cable and attach to the basket to test as follows:

Secure a cable from the energized conductor bar to the basket front and test. Secure the cable to the basket bottom and apply the required voltage, with and without

basket liner. The total leakage in milliamperes indicated on the test unit shall be recorded for each test.

(c) Basket immersion test, with the basket immersed in a brine solution, and the interior of the basket filled to a depth that is practical to prevent arcing.

4.4.6 Truck body treatment and painting. A certification regarding the body cleaning, treating, prime painting and salt spray resistance testing required by MIL-STD-1223, shall be made to the Government representatives at the first production vehicle inspection.

4.4.7 Production sample. Upon acceptance of the first production vehicle, it shall remain at the manufacturing facility as a production sample, and shall be the last vehicle shipped on the contract. The contractor shall maintain the vehicle in a serviceable condition for the duration of the contract.