Technical data
OPERATION&MAINTENANCE MANUAL 
  45
5、  lube oil insufficiency or no pressure 
1 oil lever in oil sump too low  Add oil up to mark line on dip sticks 
2 serious leakage from oil pipelines  Eliminate leakage 
3 extract    oil filter, oil filter and pipe 
blocked 
Clean, or replace filter core 
4 oil gauges damaged or gauge pipe 
blocked 
Repair or replace it 
5 oil is too dilute  use the eligible oil 
6 oil pump gears seriously worn off, with 
excessive clearance 
Adjust the clearance or replace them 
7 pressure relief valves of oil filter cease 
to function 
Check and repair or replace it 
8 main bearings connecting-rod bearings 
and camshaft bushing seriously worn off 
with excessive clearance 
Repair or replace them 
6 、overheating of engine 
cause remedies 
1 temperature of cooling water too 
high 
(1)insufficient cooling water or vapor 
lock in water pipes 
(1)fill the rank to make cooling water 
level higher than the center line of 
water pump 
(2)bad working state of water pumps  (2)check  water  pump  clearance  and 
tightness of belts, eliminate leakage 
(3)water scale in cooling systems too 
thick 
(3)remove it 
2 oil temperature too high   
(1)insufficient or excessive oil  (1)check whether the oil level is 
between the dip stick scale lines 










