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TROUBLESHOOTING
TESTING AND ADJUSTING
Troubleshooting can be difficult.  On the following pages there is a list of possible
problems. To make a repair to a problem, make reference to the cause and correction.
This list of problems, causes, and corrections, will only give an indication of where a
possible problem can be, and what repairs are needed. Normally, more or other repair
work is needed beyond the recommendations in the list.
Remember that a problem is not normally caused only by one part, but by the relation of
one part with other parts. This list can not give all possible problems and corrections. The
serviceman must find the problem and its source, then make the necessary repairs.
TROUBLESHOOTING INDEX
Item
Problem
Item
Problem
1.
Engine Crankshaft Will Not Turn When Start
27.
Engine Coolant Is Too Hot.
Switch Is On.
28.
Starter Motor Does Not Turn.
2a.
Engine Will Not Start. Governor Terminal
29.
Alternator Gives No Charge.
Shaft Does Not Move.
30.
Alternator Charge Rate Is Low or Not Regular.
2b.
Engine Will Not Start. Governor Terminal
31.
Alternator Charge Too High.
Shaft Moves.
32.
Alternator Has Noise.
3.
Engine Overspeeds On Start.
33.
Exhaust Temperature Too High.
4.
Engine Speed Does Not Have Stability.
34.
Air Starting Motor Turns Slowly or Has A Loss
5a.
Engine High Idle Speed Too Low.
of Power.
5b.
Engine Loses High Idle After Start Up.
35.
Air Starting Motor Pinion Does Not Engage
6.
Engine Can Not Be Shut Down Through
With The Flywheel.
Governor.
36.
Air Starting Motor Runs, Pinion Engages But
7.
Engine Misfiring or Running Rough.
Does Not Turn The Flywheel.
8.
Engine Stall at Low rpm.
37.
Air Starting Motor Pinion Does Not Engage
9.
Not Enough Power.
Correctly With The Flywheel.
10.
Too Much Vibration.
38.
Protective Systems (See Troubleshooting sec-
11.
Loud Combustion Noise.
tion of);
12.
Valve Train Noise (Clicking).
SENR3078 - Hydramechanical
13.
Oil In Cooling System.
SENR2985 - Electrical
14.
Mechanical Noise (Knock) In Engine.
SENR2984 - Electrical With Reversal Protection
15.
Fuel Consumption Too High
16.
Loud Valve Train Noise.
17.
Too Much Valve Lash.
18.
Valve Rotocoil or Spring Lock is Free.
19.
Oil at the Exhaust.
20.
Little or No Valve Clearance.
21.
Engine Has Early Wear.
22.
Coolant in Lubrication Oil.
23.
Too Much Black or Gray Smoke.
24.
Too Much White or Blue Smoke.
25.
Engine Has Low Oil Pressure.
26.
Engine Uses Too Much Lubrication Oil.
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