Hobart 140GT17P Operation And Maintenance Manual With Illustrated Parts List page 97

TROUBLE, SYMPTOM
AND CONDITION
ENGINE AND CONTROLS (CONTINUED)
3. Engine will not
start. Cranking
speed normal.
4. Engine is hard to
start. Cranking
speed normal.
September 30/89 Revised
PROBABLE CAUSE
(6) Faulty fuel pump
(a) Relief valve
not seating
(b) Worn pump
gears or damaged pump
drive
(7) Defect in inject-
or racks or linkage
A. Low ambient temperature, A. Check causes and remedies
or limited fuel
B. Low compression which
may be caused by any
one of the following:
(1) Sticking or
burned exhaust
valves
(2) Compression rings
worn or broken
(3) Cylinder head
gasket leaking
(4) Improper valve
clearance adjust-
Trouble Shooting Chart (Sheet 3 of 20)
Figure 4
TEST, CHECK, AND/OR
REMEDY
(6) Check pump.
(a) An open relief valve
will cause low out-
put pressure.
(b) Check pump for normal
operation. Re-
place if defective.
(7) Refer to John Deere Diesel
Handbook. Make adjust-
ments and/or repairs
according to instruc-
tions therein.
under ENGINE, Trouble 3,
above.
B. Check compression in accor-
dance with Para. 9, C and D.
(1) Cylinder head must be
removed and overhauled
to correct this condi-
tion.
(2) Check rings in accor-
dance with instructions
in John Deere Diesel Hand-
book.
(3) Check gasket in accor-
dance with instructions
in John Deere Diesel Hand-
book.
(4) Check and adjust valve
clearance in accordance
OM-2029
3-1
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