Organizational Quarterly Preventive Maintenance Checks and Services Chart

TM 11-6625-847-12

b. Maintenance forms and records to be used and

Daily services constitute a part of the quarterly

preventive maintenance checks and services and must

maintained on this equipment are specified in TM

be concurrently preformed. All deficiencies will be

38750.

recorded in accordance with the requirements of TM 38-

750. Perform all the checks and services in the

4-9.

Organizational Quarterly Preventive

sequence listed in paragraph 4-10.

Maintenance

Quarterly preventive maintenance checks and

services on the SM-442A/GRC are required.

4-10.

Organizational Quarterly Preventive Maintenance Checks and Services Chart

Sequence

Item to be

No.

Inspected

Procedures

References

Publications --------------

Check to see that the publications are complete,

DA Pam 310-4.

serviceable, and current.

DA Pam 310-4.

Modification --------------

Check DA Pam 310-4 to determine if new applicable

MWO's must be applied immediately. All NORMAL

MWO's must be scheduled.

Spare parts ------------- .

Check all spare parts, operator and organizational, for

App B.

general condition and method of storage. Overstock

should not be evident, and all shortages must be on valid

requisitions

Cables and connectors.

Check cable connectors, mating plugs, and jacks of SM-

Fig. 1-1.

42A/GRC to be sure they are clean, intact, and corrosion

free. Inspect cables for chafed, cracked, or frayed

insulation. Repair minor damage to insulation with rubber

tape and friction tape.

Handles and latches.---

Check handles, latches, and hinges for loose ness; tighten

Fig. 1-1.

or replace, as necessary.

Metal surfaces. ----------

Inspect painted surfaces for spots, rust, and corrosion.

Para 4-11.

Clean and touchup paint as required.

Operational check ----- .

Check the equipment by performing operational

Para 3-16 through 3-19.

procedures.

4-11. Preservation

4-12. Lubrication

The SM-442A/GRC does not require lubrication at

Remove rust and corroiosn from metal surfaces by

regular intervals since there is very little mechanical

lightly sanding them with fine sandpaper. Brush two thin

load on either the drive gears or the drive chains. The

coats of paint on the bare metal to protect it from further

blower motor is a sealed unit and cannot be lubricated.

corrosion. Refer to applicable cleaning and refinsihing

practices specified in TB SIG 291 and TB SIG 364.

Section III. ORGANIZATIONAL TROUBLESHOOTING

perform all the functions starting with paragraph 4-14

4-13.

General

and proceed through the items of the trouble localization

Note. Troubleshooting is not performed by

chart, until an abnormal condition or result is observed.

the operator.

When a abnormal condition or result is observed,

Troubleshooting the SM-442A/GRC by the

perform the checks and corrective actions indicated in

organizational repairman is based on localization and

the trouble isolation chart. If the corrective measures in

isolation procedures contained in the trouble localization

and isolation charts. To troubleshoot the equipment,

4-3