Doosan DL06 - Adjustment of Valve Clearance

DL06K Interim Tire-4 Diesel Engine Commissioning and Operation
171
7) Fill cooling system with hot water.
8) Run engine at idle for 30 minutes. At the same time continuously replenish the
water leaking from the bore in drain plug by adding fresh water.
CAUTION :
Periodically clean the circuit interior with a cleaner
.
4.8. Adjustment of Valve Clearance
4.8.1. General information
The valve clearances are to be adjusted at the times of the following situations.
z When the engine is overhauled and the cylinder heads are disassembled.
z When severe noise comes from valve train.
z When the engine is not normally operated, even though there is no trouble in the
fuel system.
4.8.2. Valve clearance adjust procedure
z After letting the #1 cylinder’s piston come at the compression top dead center by
turning the crankshaft, adjust the valve clearances.
z Loosen the lock nuts of rocker arm adjusting screws and push the feeler gauge of
specified value between a rocker arm and a valve stem and adjust the clearance
with adjusting screw respectively and then tighten with the lock nut.
z As for the valve clearance, adjust it when in cold, as follows
.
Engine model Intake valve (A) Exhaust valve (B)
DL06K 0.3 mm 0.4 mm
EJ9OM089
A
B
Rocker arm
Rocker arm
Calliper adjusting
screw
Calliper
Calliper
Intake valve spring
(inside & outside)
Intake valve
Valve seat
Valve seat
Push rod
Push rod
Valve adjusting bolt
Valve
adjusting
nut
Exhaust valve spring
(inside & outside)
Exhaust valve
Adjusting
screw
Intake valve adjusting Exhaust valve adjusting
Valve adjusting
nut
Valve adjusting
screw