MIL-T-52953-SUP Trucks, Lift, Fork, Electric Motor Driven, 2000-3000-4000-6000 Pound Capacity General Specification for No S/S DocumentThis specification covers the general requirement for battery powered, industrial, depot type forklift trucks.

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MIL-T-52953C

components or assembly where applicable, battery, wearing parts of lift and tilt mechanism, brakes and components, wear parts of steering assembly, tires, wheels, lights, and horn, without the removal of any major parts other than covers or requiring special tools. If hand access openings are used on the exterior of the truck, the edges of each opening shall be smooth and the opening shall be provided with a removable or hinged cover, whenever it is required. Covers shall be provided with captive, hand operable fasteners. Minimum service access openings shall be in accordance with SAE J925. There shall be no interference with the servicing or draining of oils and lubricants to or from any assembly or components by frame members or other obstructions. Drain holes with removable drain plugs shall provide for complete drainage without disconnection of hoses. Drain outlets shall provide for drainage into a receptacle. All fuses/circuit breakers shall be readily accessible without removal of other components.

3.8 Maintenance operations. Unless otherwise specified herein, each operation in the following maintenance operations list shall be accomplished

by one man in not more than the tire specified, using common tools and special tools, if any, furnished with the truck.

Type

Time in minutes E EE EX

a.	Remove	and	replace	hydraulic motor brushes.	60	90	150
b.	Remove	and	replace	steering motor brushes.	60	90	150
c.	Remove	and	replace	drive motor brushes.	60	90	150
d.	Remove	and	replace	all contractor tips.	60	90	150
e.	Remove	and	replace	all filters screens and	105	105	105

strainers in hydraulic system.

f.	Bleed and adjust brakes and refill master	45	45	45
	cylinder.
g.	Remove and replace floodlight and tail light	30	30	45
	bulbs (not including black out bulbs).
h.	Lubricate all lubrication fittings with 2	60	60	60
	strokes per fitting using grease gun and
	extension.

3.9 Hydraulic system. The hydraulic system shall consist of all hydraulic components necessary for operation of the load handling means system and shall not include break operations. All hydraulic system component material shall

be compatible with MIL-L-2104. The system shall provide for lowering of capacity load at a speed not to exceed 80 FPM in the event of or damage to hydraulic hose(s) supplying the lift cylinder. A pipe tap or straight thread

0-ring test point for measuring pressure shall be located at the outlet of each pump or pressure inlet of each control valve. Hydraulic hose(s) shall have a working pressure which is greater than the hydraulic system maximum relief valve setting. A system filter shall be furnished in either the

suction or return line. The system filter shall meet the requirement of SAE J

931a. Hose reels shall be mounted such that they are within the plan outline of the truck. Positive means shall be furnished to prevent cavitation of the lift cylinder.