Flushing Lubricant and Hydraulic Systems.

TM 5-3835-222-BD

(2)

They may cause high wear rate because of improper viscosity.

(3)

They may cause seal damage or create deposits because of improper chemical composition.

c. There are no established time costraints on these expedients, but the shorter the time used

is better.

P4.

Flushing Lubricant and Hydraulic Systems.

a. Expedient lubricant and hydraulic fluids must be removed as soon as possible, and the system

cleaned and inspected.

b. For those systems using oils, flushing involves draining, refilling with the proper product, operating

to insure complete circulation and when possible stable operating temperature (this usually means at

least hour), a redrain and refill. For the transmission and hydraulic system a second period of

operations and a third drain and refill are needed. Installation of new filters is desirable. Filters

must as a minimum be removed and cleaned. As a last resort only, operate without filters. While

systems should not be disassembled to inspect seals, maintenance organizations should be prepared

to replace seals that show signs of leaking. Organizations must observe seals on these systems

during subsequent operations.

c. For systems using grease, it is normally necessary to disassemble the system and wash the

parts, especially the bearings, in a suitable solvent. The parts are then wiped dry, inspected for

wear and pitting, replaced if needed and repacked with the proper product.

D-3