TM 5-3805-280-24-2
Engine Tune-Up and Break-In
PERFORM ENGINE BREAK-IN
100
8
2. Start engine, run at loads and speeds shown in
Use a dynamometer to perform the following
following chart for time limits given.
preliminary break-in procedure. If necessary,
preliminary engine break-in can be performed without
PRELIMINARY
a dynamometer if under controlled operating
ENGINE
conditions.
BREAK-IN
AFTER MAJOR
IMPORTANT: DO NOT use John Deere PLUS-50 oil
OVERHAUL
or engine oils meeting API CG4, API
Time
Load
Engine Speed
1 minute
No load
850 rpm
CF4, ACEA E3 or ACEA E2,
2 minutes
No load
Fast Idle
performance levels during break-in
15 minutes
1/2--3/4 load
2000 rpm to rated
period of an engine that has had a
speed
major overhaul. These oils will not
10 Minutes
Full load
Rated speed
allow an overhauled engine to
properly wear during the break-in
3. After preliminary break-in, run engine 1--2 minutes
period.
at 1500 rpm, with no load before shut-down.
Do not add makeup oil until the oil
4. Check and readjust valve clearance as necessary.
level is BELOW the add mark. John
Cylinder head retorque is not required.
Deere Break-In Oil should be used to
NOTE: During the first 20 hours, avoid prolonged
make up any oil consumed during
periods of engine idling or sustained maximum
break-in period.
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
5. Operate the engine at heavy loads with minimal
acceptable.
idling during the break-in period.
1. Fill engine crankcase to proper level with John
If the engine has significant operating time at idle,
Deere ENGINE BREAK-IN OIL during break-in
constant speeds, and/or light load usage, an additional
operation. This oil is specifically formulated to
100 hour break-in period is recommended using a new
enhance break-in of John Deere diesel engines.
change of John Deere ENGINE BREAK-IN OIL and
new John Deere oil filter.
If John Deere Engine Break-In Oil is not available,
use diesel engine oil meeting API Service
As a general rule, makeup oil should not need to be
Classification CE or ACEA Specification E1.
added during 100-hour break-in period. However, if
makeup oil is required in the first 100-hour break-in, an
IMPORTANT: During preliminary break-in,
additional 100-hour break-in period is required. Use a
periodically check engine oil
new change of John Deere ENGINE BREAK-IN OIL
pressure and coolant temperature.
and a new John Deere oil filter.
Also check for signs of fuel, oil, or
coolant leaks.
RG,100,JW7645
1921NOV971/1
13-471
