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MEASURE VALVE LIFT
REMOVE TIMING GEAR COVER

Maintenance Manual For Hydraulic Excavator 230Lcr And 230Lcrd With Rock Drill 2
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TM 5-3805-280-24-2
Camshaft, Balancer Shafts and Timing Gear Train
16
7. If valve lift on all valves is within specifications, adjust
12
valve lash to specified clearance. (See CHECK AND
ADJUST VALVE CLEARANCE in Group 05.)
If valve lift on one or more valves is not within
specification, remove and inspect entire valve train and
camshaft.
8. Rotate engine one full revolution (360). Lock engine
at:
TDC No. 4 compression stroke for 4-cylinder
engines.
TDC No. 6 compression stroke for 6-cylinder
engines.
9. Set rocker arm-to-valve tip clearance to 0.0 mm (in.)
for:
No. 2 and 4 exhaust and No. 3 and 4 intake valves
on 4-cylinder engines.
No. 2, 4, and 6 exhaust and No. 3, 5, and 6 intake
valves on 6-cylinder engines.
10. Repeat steps 4--7.
RG,16,DT7507 1914NOV972/2
13-244


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