Engine Rebuild Guide, Break-In and Tune-Up
02
010
16
RG,100,JW7645 –19–05NOV99–1/2
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.
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.
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.
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.
DO NOT fill above the crosshatch
pattern or FULL mark. Oil levels
anywhere within the crosshatch are
acceptable.
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 John Deere Engine Break-In Oil is not available,
use diesel engine oil meeting API Service
Classification CE or ACEA Specification E1.
IMPORTANT: During preliminary break-in,
periodically check engine oil
pressure and coolant temperature.
Also check for signs of fuel, oil, or
coolant leaks.
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
3. After preliminary break-in, run engine 1—2 minutes
at 1500 rpm, with no load before shut-down.
4. Check and readjust valve clearance as necessary.
Cylinder head retorque is not required.
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.
5. Operate the engine at heavy loads with minimal
idling during the break-in period.
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
040604
PN=64
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