TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 80 of 828
TM 9–2350–311–20–2
2–19
2–8.4
Lubricants and Military Symbols
Lubricants are identified by standard military symbols in accordance with MIL–HDBK–113, MIL–HDBK–275, or
MIL–HDBK–267, as applicable. Lubricants, along with their military symbols, required for unit maintenance are identified
below.
GAA
Grease, Automotive and Artillery (MIL–G–10924)
GMD
Grease, Molybdenum Disulfide for Low and High
Temperatures (MIL–G–21164)
OHT
Hydraulic Fluid, Petroleum Base, Preservative, Hydraulic
Equipment (MIL–H–6083)
2–8.5
Leakage Definitions.
Leakage definitions for PMCS shall be classified as follows:
a.
Class I. Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
b.
Class II. Leakage of fluid great enough to form drops but not enough to cause drops to drip from item being checked/
inspected.
c.
Class III. Leakage of fluid great enough to form drops that fall from the item being checked/inspected.
2–8.6
Lubrication Points
Points that must be lubricated by unit maintenance, their required lubrication intervals, and the required lubricants are illus-
trated below. The amount of lubricant required is given in the “Capacity” column of Table 2–1.
Lubricant-Interval
Interval-Lubricant
Q
GAA
CAB RACE RING
(See item 4)
A
OHT
HYDRAULIC OIL,
POWER PACK FIL-
TER, AND MOUNT
ASSEMBLY
(See item 17)
AOAP
TEST
CAB TRAVERSING
RING GEAR AND
TRAVERSING
MECHANISM
OUTPUT DRIVE
GEAR
GAA
A
TORQUE KEY
AND GUN TUBE
KEYWAY
(See item 12)
GMD
or
GAA
1500
RDS
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