Chapter 3 Fuel Injection Equipment
2. Disassembly, Reassembly and Inspection of Governor
4LHA Series
Inspection of governor sleeve
Contact
surface
with
shifter
Contact
surface
with
governor weight
Sleeve
inner dia.
Replace
if:
(1) The contact surface
with
the governor weight is
worn or there is pitching.
(2) The contact surface
with
the shifter is consider-
ably worn or there is pitching.
(3) The governor sleeve does not move smoothly
above
the cam shaft due to governor sleeve inner
dia.
wear or other reasons.
Inspection of governor lever assembly
(1) Measure the clearance between the governor shaft
and
bushing, and replace if it exceeds the
limit.
mm (in.)
Standard
Dimension
Standard
Clearance
Limit
Governor
shaft
outer dia.
9.986^9.995
0.065 ~
0.124
(0.0025-
0.0048)
0.5
(0.0196)
Bushing
inner dia.
10.060-10.110
0.065 ~
0.124
(0.0025-
0.0048)
0.5
(0.0196)
(2) Inspect the shifter contact surface, and replace the
shifter (always disassemble by removing the pin) if
it is worn or scorched.
(3) Disassemble and replace
excess
fuel springs
that
are
settled,
broken or corroded by pulling the spring
pin.
(4)
Check
link
parts for bends or kinks
that
will
cause
malfunctioning, and replace any parts as necessary.
NO TE: 1. Side gap on top of go vernor lever shaft.
mm (in.)
Standard
side gap
0.4- 0.8 (0.0157-0.0315)
2. Replace the governor lever, tension lever,
bushing, shifter and throttle spring as
an assembly.
Inspection of springs
(1)
Check
the governor spring and other springs and
replace
if they are broken, settled or corroded.
(2) Measure the free length of the governor spring, and
replace
if it exceeds the
limit.
See
the service data sheet for the free length of
the governor spring.
clii&
Inspection of angleich spring assembly
Replace
if:
(1) There is wear to the sliding surface of the piston
or the surface which contacts
with
the shifter.
(2) If the assembly is broken.
Angleich
spring
Piston
Inspection of torque spring assembly.
Replace
if:
(1) The tip of the piston or the contact surface are
worn.
(2) The torque spring is broken.
Torque spring
A
Contact
surface
3-2-18
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