Toyota B - Page 63

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ENGINE MECHANICAL
-
Timing
Gears
and Camshaft
EM-55
11. CHECK
TIMING
GEAR
BACKLASH
(a)
Align the spline
toothless
portions
of
the
injection
pump
drive
gear
and
injection
pump,
and
install
the
drive
gear.
(b)
Using a
dial indicator,
measure the backlash between
each
gear.
Standard
backlash: 0.058
-
O.162
mm
(O.OO23
-
O.OO64
in.)
Maximum
backlash:
O.3O
mm
(O.O118
in.)
lf
the backlash
is
greater
than maximum,
replace the
gears
as
a
set.
(c)
Remove the injection
pump
drive
gear.
12. REMOVE
VACUUM PUMP
13.
CHECK
IDLE
GEAR
THRUST CLEARANCE
Using
a thickness
gauge,
measure the
idle
gear
thrust
clearance.
Standard
thrust clearance: O.OG
-
O.17
mm
(O.OO24
-
0.OO67
in.)
Maximum thrust clearance:
O.3O
mm
(O.O118
in.)
lf the thrust clearance
is
greater
than maximum,
replace
the thrust
plate.
14. REMOVE IDLE GEAR
Remove
the
two bolts, trust
plate
and
idle
gear.
15. REMOVE IDLE
GEAR
SHAFT
Remove the union
bolt and
idle
gear
shaft.
lhe
gear
ittr