SERVICE MANUAL
the governor control lever. Unbolt the
timing gear cover from engine block and
oil pan, then carefully pull cover forward
off dowels.
The crankshaft front oil seal can be
renewed at. this time. Press seal out, do
not pry, to prevent damage to cover. Press
new seal into position from inside with
lip toward inside. The inside edge of seal
should be flush with rear of seal bore in
cover.
Install cover by reversing removal pro·
cedure. Be sure that driving lug (L-Fig.
37) on governor cup is at 6 o'clock posi·
tion before installing cover. Trim the
gasket between cylinder block and cover
until ends
are
flush with cylinder block.
Sealing between the timing gear cover
and oil pan is more easily accomplished
by installing oil pan with new gasket
after cover is installed. Tighten the tim·
ing gear cover to engine block screws to
34-40 N
·
m C25-30 ft .. Jbs.l torque, and the
oil pan to timing gear cover screws to
16-22 N
·
m 02-16 ft .. lbs.l torque.
TIMING GEARS
All Gasoline Models
35. Timing gears can be renewed after
removing timing gear cover
as
outlined
m paragraph 34. Withdraw governor
race and shaft assembly from camshaft.
Remove nul retaining camshaft gear to
camshaft and lift off the governor ball
driver assembly. Remove liming gea1·s
using suitable puller. Be careful not to
damage governor shaft bore in camshaft
when pulling camshaft gear.
Recommended backlash between
crankshaft and camshaft gears is
0.03-0.05 mm <0.001-0.002 inch). Gea1·s
are
available in standard size, undersizes
and oversizes. Gears are marked
"S"
(standard), "U" (undersize) or
"0"
(over·
size) and the number "1" or "2"
denotmg 0.001-0.002 inch oversize or
undersize.
Fig. 31-VIew of timing merks on camshaft gear
end
crankshaft
geer aligned. Lug (L) should be
at
6
o'clock position before cover Is Installed.
Correct backlash between crankshaft
and
011
pump gears
IS
0.089·0.107 mm
(0.0035-0.0042 inch).
During installation, mesh the single
punch marked tooth on crankshaft gear
with the double punch marked tooth
space on camshaft gear (Fig. 37).
Heating camshaft gear in oil or in an
oven to approximately 149°C (300 Fl
will facilitate gear installation. Remove
oil pan and support camshaft in a for·
ward position while gear is being in·
stalled to prevent loosening and leakage
of camshaft rear plug.
Tighten the camshaft gear retaining
nut to a torque of 95·1 08 N
·
m <70-80
ft .. Jbs.).
CAMSHAFT
All Gasoline Models
36.
1b
remove the camshaft, first
remove camshaft timing gear as outlined
in paragraph 35. Remove fuel tank,
rocker arm cover, rocker arms and shaft
ass mbly and push ods. Remove
the ig.
nition distributor and oil pan. Block up
or support the cam followers. Remove the
Paragraphs
35-37
screws securing camshaft thrust plate
{18-Fig. 38) to engme block and
withdraw camshaft from front of engine.
All camshaft journals ride directly in
machined bores in the cylinder block.
Normal diam<'lral clearance
is
0.064.0.114 mm 10.0025-0 0045 inchl.
Renew camshaft an<Lor cylinder block if
clearance exceeds 0.18 mm 0.007 inchl.
Camshaft
journal
diameter
is
45.92-45.95 mm (1.808-1.809 inches! for
front journal,
44.34-44 36
mm
(1.7455-1.7465 inchcsl for center journal
and 42.75-42.77 nun (1.683-1.684 inches)
for rear journal. Camshaft end play is
controlled by thrust plate C18) and is nor·
mally within a range of0.076-0.178 mm
W.003·0.007 inch). Th1ckness of thrust
plate when new
IS
3.735·3.785 mm
<0.147-0.149 inch).
ROD AND PISTON UNITS
All
Gasoline Models
37. Connecting rod and piston umts
a
moved
ft·om
t•emoving
cylinder head and oil pan. Correlation
marks on rod and cap shou
l
d be in·
Fig. 38-Exploded view of
c
yli
n
der block and associated perts
I Ool ohngtr
2 Crank•haf\ gear
3 Crankohaf\
1 011
pump
� Shom
p<trk
6
M
a
m
h<-11nn� rop
7
ro nM
loners
8
Ma1n
boanng
cap
9
!kann�
loners
10
Ro•rlng
<Bp
I I
Seal
Olnp•
12 8toor1n1 hn.,..,.
13 l'lywh�l
15 P1lo1
beanng
16
ltcor
o1l
"""I
retam<•r
17
Cam•h"f\
lh Thnm
pial•
19 Cam.sluJl per
20
Go\.·crno>r
"'f'lttht un1t
21 Nut
22
Go't'r·rn•Jr cup
23 Cyhndcr bln<k
21