TM-9-2350-311-34-2
CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM
TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 1994
TM-9-2350-311-34-2 - Page 67 of 552
TM 9-2350-311-34-2
m. Inspect for Emulsified Hydraulic Fluids
Emulsified hydraulic fluid in hydraulic systems, characterized by milky color, can result from air becoming
trapped in the fluid or from nitrogen leaking past piston seals. If milky hydraulic fluid is observed, drain,
purge, and refill hydraulic system (TM 9-2350-311-20-2). Observe hydraulic fluid again after several days.
If hydraulic fluid is again emulsified, repair defective cylinder.
2-4.2
Types of Inspection
a. Initial Inspection
Initial inspection information is included to aid maintenance personnel in determining cause of unserviceabil-
ity, extent of repairs, and an estimate of replacement parts needed.
b. Maintenance Shop Inspection
In the event materiel is received in a maintenance shop for repair without complete information regarding
deficiencies, perform a complete maintenance shop inspection to determine required parts. Refer to
AR 750-1.
c. Visual Inspections
Inspections made while components are mounted in vehicle, are generally visual and are to be performed
before attempting to operate these components. The purpose of these inspections is to determine condition
of materiel and to take precautions to prevent any further damage if operation is faulty.
d. Inspection Following Removal
Inspection after materiel is removed from vehicle is performed to verify diagnosis made while installed and
to uncover further defects.
e. In-Process Inspection
In-process inspection instructions on materiel are contained at end of each repair chapter together with ap-
plicable repair instructions.
f. Final Inspection
Final inspection instructions for materiel in supporting maintenance shops are contained in para 2-5.
g. Hydraulic System Inspection
Hydraulic system inspection tests on components and system can only be checked with elevating system,
traversing system, and rammer valve completely installed in vehicle. Refer to TM 9-2350-311-20-2 for
checkout procedure of system and external leakage allowance criteria for components.
h. DS/GS Pre-Embarkation Inspection
Para 2-6 provides pre-embarkation inspection procedures. This inspection determines whether preventive
maintenance has been performed. It is critical that equipment in units alerted for overseas movement be in
good working order.
i.
Inspection of Materiel in the Hands of Troops
Inspection of materiel in the hands of the troops is performed after pre-embarkation inspection and is part of
the preparation for overseas movement. Para 2-7 details this inspection performed by direct and general
support maintenance.
2-5
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