![background image](http://html.mh-extra.com/html/yuchai/yc6a-series/yc6a-series_operation-and-maintenance-manual_3659882088.webp)
88
fuel or low injected fuel
pressure.
弹簧是否折断;
Check whether the fuel injections pump plunger and fuel
outlet valve is worn or clogged or not, plunger spring and
fuel outlet valve spring is broken or not.
⑤
起动系统故障:
Starting system troubles
电路接线错误或接触不良:
Wrong wiring connection
or poor contact:
检查接线是否正确、可靠。
Check wiring for its correctness and reliability.
蓄电池电力不足:
Underpower of the battery
向蓄电池充电。
Underpower of the battery
起动机碳刷与整流子接触
不良:
Poor contact of the starter
carbon brush with
commutator:
修理或调换电刷,用木砂纸清理整流子表面,并吹净。
Repair or replace the brush; clean the commutator surface
by abrasive paper and blow it clean.
⑥
压缩压力不足:
Insufficient compression
pressure
更换活塞环,视情况加缸套。
Replace piston ring; add cylinder liner as per actual
situation.
活塞环过度磨损:
气门漏气。
Piston ring is excessively
worn: the valve has any air
leak.
检查气门间隙,气门弹簧、气门导管及气门座的密封性,密封
不好应研磨气门座。
Check the valve clearance and hermetization of the valve
spring, valve guide pipe and valve seat, lap the valve seat in
case of poor hermetization.
⑦
燃油切断电磁阀的接头
松动或脏污、腐蚀
Loosened, contaminated
or corroded joint to cut off
the solenoid
拧紧、清洗或更换。
Re-tighten, clean or replace.
⑧
装配正时不正确。
Incorrect assembly timing.
检查并调整。
Check and adjust.
Summary of Contents for YC6A Series
Page 11: ...4 YC6J...
Page 12: ...Fig 4 Assembly Layout for YC6J Diesel Engine may differ from the practical configuration...
Page 13: ...13 YC6A A8700 YC6A series construction engine A8700 external characteristic curve...
Page 15: ...15 YC6B B7700 YC6B series construction Turbocharged engine B7700 external characteristic curve...
Page 16: ...16 YC6J J8000 YC6J series construction engine J8000 external characteristic curve...
Page 64: ...64 2 31 Thethermostator is of wax type and installed in the water outlet of the pipe It is not...
Page 98: ...98 the engine to check repair and replace damaged parts...