TM-9-2350-311-10

TM-9-2350-311-10 - Page 717 of 775

TM 9-2350-311-10

G-3 LUBRICATION INSTRUCTIONS — CONTINUED

6. BREECH AND FIRING MECHANISM (C)

Do not clean obturator pad with CLP. Use soap (item 12, Appx D) and water only.

NOTE

Breech, firing mechanism, and firing mechanism housing are cleaned and lubricated weekly

during non-firing periods.

Immediately after firing, remove firing mechanism (20) and spindle assembly (21) (para 3-6.8). Thoroughly clean all

surfaces that have been in contact with powder gases with CLP (item 8, Appx D). Wipe dry and apply a light coating of

CLP (item 8, Appx D) on all surfaces including breech threads. Lubricate the sliding area of firing mechanism housing

(22) with CLP (item 8, Appx D).

BREECH RING BODY SUPPORT LUGS (C)

Lubricate both breech ring body support lugs (23) with CLP (item 8, Appx D) during periods when cannon assembly is

being fired. These are cleaned along with cannon tube.

8. OPERATING CAM WAYS (C)

Lubricate operating cam ways (24) with GAA (item 17, Appx D) during periods when cannon assembly is being fired.

9. OPERATING CAM BREECH CAM PIN (C)

Lubricate two lubrication fittings (25) with GAA (item 17, Appx D) during periods when cannon assembly is being fired.

G-13