UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
FOR HYDRAULIC EXCAVATOR 230LCR/230LCRD
ITEM TO BE INSPECTED
EQUIPMENT IS NOT
PROCEDURE: DO THE PMCS AND HAVE ITEM
REPAIRED, FILLED, OR ADJUSTED AS NEEDED
(6) Loosen jam nut (A) and adjust clearance with a
screwdriver, as shown.
Adjust Valve Clearances (6-Cylinder Engine)
NOTE: Firing order is 1-5-3-6-2-4.
A - No. 1 TDC compression stroke
C - Fan end of engine
(1) Adjust No. 1, 3, and 5 exhaust valves and No.
1, 2, and 4 intake valves.
VALVE CLEARANCE SPECIFICATIONS
Exhaust Valves (E)
0.46 mm (0.018 in.)
Intake Valves (I)
0.36 mm (0.014 in.)