Engine Rebuild Guide, Break-In and Tune-Up Perform Engine Break-In IMPORTANT: If engine has a PTO, break-in can be performed at the PTO if it is done as specified below. To prevent possible damage to the PTO gear box, DO NOT apply full load through the PTO for any longer than the specified 10 minutes below. If John Deere Engine Break-In Oil is not available, use diesel engine oil meeting API Service Classification CE or ACEA Specification E1. 02 010 16 IMPORTANT: During preliminary break-in, periodically check engine oil pressure and coolant temperature. Also check for signs of fuel, oil, or coolant leaks. Use a dynamometer to perform the following preliminary break-in procedure.
If necessary, preliminary engine break-in can be performed without a dynamometer if under controlled operating conditions. 2. Start engine, run at loads and speeds shown in following chart for time limits given. PRELIMINARY ENGINE BREAK-IN AFTER MAJOR OVERHAUL Time Load Engine Speed 1 minute No load 850 rpm 2 minutes No load Fast Idle 10 minutes 1/2—3/4 load 2000 rpm to rated speed 10 Minutes Full load Rated speed IMPORTANT: DO NOT use John Deere PLUS-50 oil or engine oils meeting API CG4, API CF4, ACEA E3 or ACEA E2, performance levels during break-in period of an engine that has had a major overhaul.
These oils will not allow an overhauled engine to properly wear during the break-in period. 3. After preliminary break-in, run engine minutes at 1500 rpm, with no load before shut-down. 4. Check and readjust valve clearance as necessary. Cylinder head retorque is not required. Do not add makeup oil until the oil level is BELOW the add mark. John Deere Break-In Oil should be used to make up any oil consumed during break-in period. NOTE: During the first 20 hours, avoid prolonged periods of engine idling or sustained maximum load operation. If engine will idle longer than 5 minutes, stop engine. DO NOT fill above the crosshatch pattern or FULL mark.
Oil levels anywhere within the crosshatch are acceptable. 5. Operate the engine at heavy loads with minimal idling during the break-in period. 1. Fill engine crankcase to proper level with John Deere ENGINE BREAK-IN OIL during break-in operation. Use break-in oil regardless of ambient temperature. This oil is specifically formulated to enhance break-in of John Deere diesel engines. Under normal conditions, do not exceed 100 hours with break-in oil. If the engine has significant operating time at idle, constant speeds, and/or light load usage, an additional 100 hour break-in period is recommended using a new change of John Deere ENGINE BREAK-IN OIL and new John Deere oil filter.
CTM100 (06APR04) 02-010-16 P OWER T ECH 10.5 L & 12.5 L Diesel Engines Continued on next page RG,100,JW7645 –19–05NOV99–1/2 040604 PN=64