Lubrication & Maint./2000 Hour/24 Month 4. With engine lock-pinned at TDC of No. 1 piston’s compression stroke, check valve clearance to following specifications. (Use sequence for 4-cylinder or 6-cylinder engines as outlined on next page.) Specification Intake Valve Clearance Checking (Rocker Arm-to-Bridge) (Engine Cold)—Clearance 0.31—0.38 mm (0.012—0.015 in.) ................................ Exhaust Valve Clearance Checking (Rocker Arm-to-Bridge) (Engine Cold)—Clearance 0.41—0.48 mm (0.016—0.019 in.) ................... OUO1089,0000208 –19–12MAR03–2/5 5. If valves need adjusting, use the appropriate valve clearance adjustment procedure on the next page and adjust to specifications below.
Loosen the jam nut (A) on rocker arm adjusting screw. Turn adjusting screw until feeler gauge slips with a slight drag. Hold the adjusting screw from turning with screwdriver and tighten jam nut to specifications. Recheck clearance again after tightening jam nut. Readjust clearance as necessary. Specification Intake Valve Clearance Adjustment (Rocker Arm-to-Bridge) (Engine Cold)— Clearance 0.36 mm (0.014 in.) ................................................................... Exhaust Valve Clearance Adjustment (Rocker Arm-to-Bridge) (Engine Cold)— Clearance 0.46 mm (0.018 in.) ...................................................................
Rocker Arm Adjusting Screw Jam Nut—Torque 27 (20 lb-ft) .................................................................... RG12169 –UN–03JUL02 Adjusting Valves A—Adjusting Screw Jam Nut NOTE: While rocker arm cover is removed, test glow plugs. (See following procedure.) 6. Install rocker arm cover and crankcase ventilator tube. 7. Reconnect battery terminal. Continued on next page OUO1089,0000208 –19–12MAR03–3/5 35-13 021604 PN=171