Mitsubishi S12R Service Manual

14 APPENDIX
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
206
Pub. No. 291Y1-40720 Revision: 5
Table 14-7 LLC Specifications (2/3)
Test items Standard value
Circulating corro-
sion (98±2°C
[208.4±4°F],1000
Hrs, 30% by volume
in aqueous solution
(ethylene glycol),
50% by volume in
aqueous solution
(propylene glycol))
Metallic test
piece
Mass
change
Aluminum, cast
iron, steel, brass,
solder, and copper
±0.30 mg/cm
2
Visual inspection of test piece af-
ter testing
Any corrosion must not be observed
except for the contacting position of
the test piece and spacer. Discolor-
ation is allowed.
Property of
liquid after
test
pH 7.0 to 9.0
pH change ±1.0
Reserve alkalinity change ±15%
Precipitation
1.0% by volume in aqueous solu-
tions or less
Visual inspection of liquid
No significant discoloration. No sig-
nificant changes such as separation
and gel generation.
Ion con-
centration
Iron, copper, alumi-
num, zinc, lead, and
ammonium ion
10 ppm or less
Circulating corro-
sion (88±3°C
[190.4±6°F],
1000±2 Hrs, 30% by
volume in aqueous
solution (ethylene
glycol))
Metallic test
piece
Mass
change
Aluminum ±0.60 mg/cm
2
Cast iron ±0.30 mg/cm
2
Steel ±0.30 mg/cm
2
Brass ±0.30 mg/cm
2
Solder ±0.60 mg/cm
2
Copper ±0.30 mg/cm
2
Visual inspection of test piece af-
ter testing
Any corrosion must not be observed
except for the contacting position of
the test piece and spacer. Discolor-
ation is allowed.
Property of
liquid after
test
pH 6.5 to 11.0
pH change ±1.0 or less
Visual inspection of liquid
No significant discoloration. No sig-
nificant changes such as bubbles
and gel generation.
Condition of
parts
Pump seals
Free from any malfunction, liquid
leak, and abnormal noise during op-
eration.
Pump case inner surfaces and
blades
Free from significant corrosion.

Mitsubishi S12R Specifications

General

Brand	Mitsubishi
Model	S12R
Category	Engine
Language	English