PROCEDURES FOR CLEANING AND PRESERVATION OF MACHINE TOOLS THAT CANNOT BE ECONOMICALLY CONNECTED TO POWER

TM 38-260

4-6.

PROCEDURES FOR CLEANING AND PRESERVATION OF MACHINE TOOLS THAT CANNOT BE

ECONOMICALLY CONNECTED TO POWER

Follow procedures in paragraphs 3-3a through d.

b. Thoroughly clean the coolant reservoir, and when applicable, the areas located under the beds of such

items as lathes and milling machines. Be sure the coolant and sludge remaining in pockets between baffles are

removed, using a suction pump or hand method.

Disconnect and remove the coolant pump from the machine.

Clean external areas with solution A as described in paragraph 3-2.

e. Clean all internal assemblies and areas, with the exception of hydraulic systems, by washing with solution

A. This may be performed by manual methods by utilizing a portable pump connected to a tank of solution A. One

effective method is to have one pressure spray pump and one suction pump operating simultaneously with a hose from

each extended into the areas which require cleaning. This will permit free circulation of the cleaning solution through the

system.

CAUTION

UNDER NO CIRCUMSTANCES SHALL SOLUTION A BE

USED TO CLEAN HYDRAULIC SYSTEMS.

Hydraulic systems. All hydraulic systems shall be inspected to determine the condition of the hydraulic

fluid. If the hydraulic fluid is clean, uncontaminated, and meets the requirements of the 40 CFR 761, no further

processing is required.

(1) If the hydraulic fluid is found to be contaminated with polychlorinated biphenyls (PCBs), the hydraulic

system shall be processed in accordance with 40 CFR 761. After decontamination, the system shall be filled with

hydraulic fluid specified in the operators manual or conforming to MIL-H-6083.

(2) If the hydraulic fluid is found to be dirty or contaminated (excluding PCBs), the system shall be drained

and refilled with hydraulic fluid specified in the operators manual or conforming to MIL-H-6083.

g. Disassemble, as required, and accomplish additional cleaning and preservation as required by following the

procedures for shutdown maintenance in chapter 3.

h. When preserving internal assemblies where cleaning solvent may be trapped, fill them to a sufficient level

with the proper preservative to ensure displacement of the solvent.

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