WEICHAI WD10 Service Manual - 23 Periodic Maintenance
Service Manual for WD10 Diesel Engine
15
228 Check Whether Running Sound is Normal
229 Check Whether Rotating Speed and Vibration are Normal
23 Periodic Maintenance
Replace engine oil
Screw off oil drain plug on the bottom of oil sump to drain all engine oil out and then screw on the
plug, refer to Fig. 2-8. Open the filler cap (refer to Fig. 2-7), add engine oil through filling port,
observe oil dipstick until oil level meets the requirements, install the filler cap.
Engine oil filling port
Oil drain plug
Fig. 2-7 Engine oil filling port
Fig. 2-8 Oil drain plug
ATTENTION: Discarded oil should be put in prescribe location and container for recycling
and reusing.
Replace engine oil filter and filter element
(1) Screw off the old engine oil filter;
(2) Fill up the new filter with clean engine oil;
(3) Coat the new filter rubber gasket with oil before installing, and then tighten the filter by hand;
(4) After the rubber gasket touched the base, tighten the filter for another 3/4~1 circle to seal it up.
(5) Check whether there is oil leakage after engine started.
Check and adjust intake and exhaust valve clearance
(1) Firstly make sure the engine is in cold state, and then rotate the flywheel positively with
external force until cylinder 1, 6 get to TDC, at this point mark (notch groove) on flywheel is
aligned to the pointer on sightglass cover plate.
(2) Remove the valve rocker shield on cylinder cover, to determine whether it is cylinder 1 or
cylinder 6 in compression stroke (for cylinder in compression stroke, there is clearance between