5. When the decompression machine is shut down, the cylinder head with high temperature will suddenly encounter cold air and crack.
There are the following methods to prevent the cracking of various cylinder bodies and cylinder caps:
1, before starting the diesel engine, should give first tank with warm water, winter season is pouring hot water 2 ~ 3 times, flow of water in the water drain valve, about 30 ~ 50 ℃ when starting is preferred.
2, diesel engine works for a long time, should be waiting for half an hour or so after downtime, engine temperature down to about 40 ~ 50 ℃ and cooling water. Water after the best use of fine wire tong drain valve switch to prevent sediment plug drain valve.
3. When the diesel engine is running excessively hot and seriously short of water, it should be idled at a low speed for 10-15 minutes, and then slowly added with cooling water.
This paper is organized by zhejiang ruiqing auto parts co. LTD