Page 330 - Foton Workshop Manual - Sauvana

12B-40 ENGINE MECHANICAL - ENGINE ASSEMBLY

CLEAN THE ENGINE PARTS

1. Disassemble the parts need cleaning to the greatest extent, perform human
assistance pretreatment for the soil, heavy oil and carbon deposit on the surface of
parts according to requirements using high-pressure water gun, wire brush, scraper
knife or other tools, to ensure the service life of cleaning fluid and speed & effect of
cleaning.
NOTICE:
• In actual operation process, in order to improve cleaning efficiency, the technological
process of cleaning along with disassembly can be adopted.
• If there is no cleaning machine, the gasoline can be used to clean the part one by one.
2. Add tap water to rinse tank, ensure that the water level is higher or equal to 3/4
height of internal groove of rinsing pool, start the electrical heating, meanwhile
perform degassing by starting ultrasonic wave, add specified amount of cleaning
agent dedicated for ultrasonic wave when the water temperature is about 40 ℃ ,
start to clean the parts when the water temperature reaches 55-60℃ .
3. Put the parts need cleaning to the rinsing pool; the arrangement shall not overlap;
ensure that the parts are completely emerged by cleaning fluid.
NOTICE:
Clean according to requirements. Do not use ultrasonic wave to clean those can not be
cleaned by it.
4. Start the ultrasonic wave, regularly clean for40-60min, close the ultrasonic wave
after completion, take out the parts.
NOTICE:
To improve cleaning effect, you can extend the cleaning time of parts in cleaning fluid if
time permits.
5. Use high-pressure water gun to remove the residue on the surface of parts, use
compressed air gun to remove the residue in duct. Parts that need rust protection
shall be treated separately.

Page 330