Continental Refrigerator LTSIO-520-AE, Overhaul Manual

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November 2011
72-30-03
PROTECTION FROM CORROSION: Coat all steel parts with corrosion preventive oil. At
inspection, parts are wiped free of oil, to provide easy handling and true dimensional readings.
Immediately after inspection, parts must be cleaned to eliminate fingerprints and contaminants,
completely recoated with corrosion preventive oil and packaged properly to prevent damage.
72-30-02 VISUAL INSPECTION
Perform a visual inspection on all parts not specified as 100% replacement at overhaul.
Examine parts prior to being cleaned for obvious evidence of wear or leakage. Reject obviously
damaged parts during the preliminary visual inspection, there is no need to clean and perform
non-destructive inspection on parts which cannot be used. If condition is uncertain, clean with
remaining parts after the preliminary exam, according to the “Engine Cleaning” instructions in
Section 72-20. Verify the parts are clean and free of all dirt, carbon, varnish, gum, and paint.
1. Visually inspect the parts using at least a 10X (power) magnifying glass under good lighting
for unacceptable conditions, such as
nicks, dents, gouges, cracks, distortion, burned areas,
pitting, metal transfer, corrosion, erosion and enamal coating wear.
Inspect all studs for bending,
looseness or partial removal.
2. Inspect all threaded parts for nicks, damaged or deformed threads, faces, or heads.
3. Identify areas that warrant further cleaning.
4. Label parts which fail inspection; indicating reason for failure and if repair is possible or if
replacement is required.
5. After visual inspection, parts should be in three groups, potentially serviceable parts,
reparable parts and parts to be discarded.
72-30-03 MAGNETIC PARTICLE INSPECTION
Prior to performing a Magnetic Particle Inspection, verify the parts are clean and free of dirt,
carbon, varnish, gum, and paint.
CAUTION... Prior to Magnetic Particle Inspection, ensure that the parts have
been thoroughly cleaned and dried according to “Engine Cleaning” instructions
in Section 72-20.
NOTE... Magnetic Particle Inspection of filler tubes, balance tube
brackets and any cover is not required.
The Magnetic Particle Inspection must be performed by a certified technician on cleaned,
ferrous parts according to ASTM E1444 using the wet continuous method with fluorescent
particles. Follow the particular magnetic particle media manufacturer's instructions regarding
use, safety data, and disposal.
1. Follow the equipment and materials manufacturer's instructions to perform the inspection
regarding use, safety data, and disposal. Use the corresponding method of magnetization
and amperage listed in Table 72-30-1.
2. Inspect parts for the following conditions:
a. All cracks or indications of the start of cracks
b. Grinding encountered after the manufacturing process
c. Seams
d. Laps or ruptures
Unless Section 72-20 contains specific instructions to remedy unsatisfactory conditions
discovered during the inspection, discard parts which exhibit any of the conditions described in
steps 2a through 2d.
3. Look for linear indications which break into corners, edges, holes, thread roots, fillets, gear
tooth roots or keyways on parts. Identify parts which contain linear indications which cannot
be reworked.
4. Label parts which fail inspection as such; indicate reason for failure and if repair or
replacement action is required.