Hydraulic systems for tracer mechanisms.

TM 38-260

NOTE

ANY QUESTIONS ON HYDRAULIC SYSTEMS WITH

PECULIAR FEATURES SHOULD BE DIRECTED TO THE

MACHINE

MANUFACTURER

FOR

SOLUTION.

HYDRAULIC SYSTEMS UTILIZING WATER-BASED

HYDRAULIC FLUIDS SHALL BE HANDLED ON AN

INDIVIDUAL BASIS AND THE MANUFACTURER OF THE

FLUID SHOULD BE CONSULTED FOR INFORMATION ON

THE PRESERVATIVE QUALITIES OF THE FLUID.

(3) Hydraulic systems for tracer mechanisms. These systems are not to be cleaned unless the pump and

mechanisms fail to function properly. Packing for these systems is not subject to contamination and need not be

replaced.

Self-contained lubricators. Self-contained lubricators shall not be cleaned unless contamination is present.

s. Coolant pumps. Coolant pumps should be disassembled to the extent that thorough cleaning may be

accomplished. Remove all solvents trapped in the system.

(1)

If the pump is direct motor driven, do not disturb the seal that prevents moisture from entering the

electric motor.

(2) Preserve the pump by thoroughly coating all interior and exterior unpainted surfaces with preservative

oil P-10, grade 50, of table 2-1. This may be accomplished by dipping, spraying, or brushing.

NOTE

THE COOLANT SHOULD NOT BE OPERATED AGAIN

UNTIL THE MACHINE TOOL HAS BEEN PLACED BACK

INTO PRODUCTION. THE PUMP MAY BE PACKAGED

SEPARATELY OR MOUNTED ON THE MACHINE, BUT

SHOULD NOT BE CONNECTED DURING THE TIMING

AND ALIGNMENT OF THE MACHINE TOOL.

Painted surfaces. Surfaces where paint is chipped or abraded shall be touched-up or repainted. The basic

purpose for painting equipment is preservation, but appearance is also of importance. The color and workmanship of

paint application shall be such that appearance is enhanced as much as practical. The choice between touch-up and

complete painting shall be made primarily on the basis of economy, but if either the number of spots or the total area

requiring touch-up is excessive, the item shall be completely painted. Care should be taken to paint those areas

previously painted. Precision surfaces should be protected during painting.

(1) Surface preparation. All loose paint shall be removed. All edges of old paint shall be feather-edged.

To ensure firm adhesion of the new coat, the old paint shall be abraded. This shall normally be accomplished by

sanding. Missing or loose filler material shall be replaced with new filler material, conforming to TT-F-322. After

abrading the old paint, all surfaces to be painted shall be thoroughly clean.

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