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 73 of 552
TM 9-2350-311-34-2
3
Steam method. Place parts in a perforated metal basket and steam treat until clean. This method is less effi-
cient than the vapor-degreaser method and may require additional cleaning of parts to remove final traces of
grease, oil, or dirt, particularly from recesses.
b. Cleaning After Repair
After repair operation and prior to assembly, remove shop dirt and other foreign matter from all metal sur-
faces. This is accomplished by the dip-tank or vapor-degreaser methods or by cleaning with cloths (item 13,
Appx B) soaked in cleaning compound (item 11.1,
Appx B).
c.
Cleaning After Shop Inspection
After in-process shop inspections, dip parts in a tank containing fingerprint remover oil (item 14, Appx B).
Using rubber gloves, remove parts and dry thoroughly with compressed air (provided with moisture filter
traps) or by wiping with clean, lint-free dry cloths (item 13, Appx B). Apply preservatives as soon as possible
after cleaning.
2-10 REPAIR OR REPLACEMENT OF PARTS
2-10.1
Replacement of Parts
a.
Unserviceable and unrepairable assemblies will be broken down into Items of Issue, and serviceable parts will be re-
turned to stock. Parts or assemblies which cannot be repaired, selective-fitted, or reclaimed to standards contained in
this manual will be salvaged and new parts used to replace them.
b. Inspection
Inspect the following:
Item
Discard
Springs
Broken, kinked, cracked or for non-conformance to repair data standards
Screws, bolts, nuts
Threads are stripped or cracked
c.
If a required part is not available, reconditioning of old part should be considered. Such parts should be inspected
carefully after reconditioning to determine their suitability and probable service life. Replacement parts should be req-
uisitioned immediately.
d.
Mandatory replacement parts for direct and general support maintenance of the cab are identified in the initial setup
with a reference to Appendix E, Mandatory Replacement Parts List.
e.
Use tools that are suitable for the work to be performed to avoid damage to tools and equipment or injury to personnel.
f.
Special tools are listed in Appendix F, Tool Identification List. Fabricated tools are listed and illustrated in Appendix C,
Illustrated List of Manufactured Items. These tools should only be used for maintenance operations for which they
were designed, and personnel should be carefully instructed in their specialized operation.
2-10.2
Removing Burrs, Scratches and Raised Metal
a.
Use fine mill file (SC 5180-95CL-A12), soft stone (SC 5180-95-CL-A12), or crocus cloth (item 12, Appx B) dipped
in light oil (item 23, Appx B) to remove burrs, scratches or raised metal.
b.
When filing aluminum, clean file often with steel file brush (SC 4933-95-CL-A06) to avoid lodging file with aluminum
particles which will gouge work surface.
Change 2 2-11
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