CLEANING - TM-9-4931-710-14-P0036

TM 9-4931-710-14&P

5-4 M139/M139A1/M140/M140A1/M154 ALINEMENT DEVICE MAINTENANCE INSTRUCTIONS-CONTINUED

DISASSEMBLY - CONTINUED

G Remove sealing compound from four

setscrews (21).

H Remove four setscrews (21), retainer

(22), and cell assembly (23). (Use tubular

Spanner wrench 61/64 x 15/16.)

Measure depth of the objective cell

assembly (24) before removal and

record measurement.

J Remove retainer (25), cell assembly

(24), and packing. Discard packing.

(Use tubular spanner wrench 1-11/64

X 1-5/32.)

REPAIR

CLEANING

Repair is by replacement of authorized

Clean all parts per TM 9-254.

parts as required (Appendix B).

Change 3