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Page Title:
TABLE 5. ENGINE WEAR LIMITS AND SERVICE SPECIFICATIONS |
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 TABLE 5. ENGINE WEAR LIMITS AND SERVICE SPECIFICATIONS
5. RING GAP/MAX. WEAR LIMIT.
1. GENERAL.
Top-0.010-0.020
in.
.
.
0.045
in.
max.
wear
limit
Model . . . . . . . . . . . . . . . .Clark D176G
2nd-0.010-0.020
in.
.
.
Displacement . . . . . . . . . . . . . 176 cu. in.
0.045
in.
max.
wear
limit
3rd-0.010-0.020
in.
.
.
Number of cylinders . . . . . . . . . . . . . . .4
0.045
in.
max.
wear
limit
4th-0.010-0.023
in.
.
.
0.045
in.
max.
wear
limit
Bore . . . . . . . . . . . . . . . . . . .3-5/8 in.
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1/4 in.
6. GROOVE CLEARANCE/MAX. WEAR LIMIT.
Compression ratio . . . . . . . . . . . . 7.6 to 1
Compression test at cranking speed . 155-175 psi
Top-0.0025-0.004
in.
.
0.006
in.
max.
wear
limit
2. TORQUE SPECIFICATION.
2nd-0.0015-0.0035
in.
.
0.006
in.
max.
wear
limit
3rd-0.0015-0.0035
in.
.
0.006
in.
max.
wear
limit
Main bearing cap bolts . . . . . . . .88-92 ft./lbs.
4th-0.0015-0.003
in.
.
0.006
in.
max.
wear
limit
Connecting rod nuts:
7. PISTON PIN.
O r i g i n a l equipment . . . . . . . .32-35 ft./lbs.
(elastic stop nut)
Clearance in piston
. . . Light thumb pressure at
Service replacement . . . . . . . .45-50 ft./lbs.
room temperature
(marsden lock nut)
Cylinder head bolts . . . . . . .
Piston pin diameter . . . . . . .8741- .8743 in.
9 0 - 9 2 ft./lbs.
Rocker arm bolts . . . . . . . . .
Piston pin running clearance
20 ft./lbs.
Crankshaft pulley . . . . . . . . . .75-85 ft./lbs.
inbushing . . . . . . . . . 0.0008-0.0013in.
Piston pin out-of-round and
Flywheel . . . . . . . . . . . . . .67-69 ft./lbs.
taper limit . . . . . . . . . . . . 0.00001 in.
Balancing cradle to crankcase bolt . . . . .35 ft./lbs.
(oiled)
No. 9 H e a d B o l t . . . . . . 8 9 . 5 - 9 1 . 6 f t . / l & .
8. CONNECTING ROD.
3. PISTONS.
D e s i r e d fitting clearance . . . 0.0005-0.0013 in.
Piston land
clearance with bore:
Side clearance (total)
. . . . 0.0065-0.0125 in.
Permissible weight variation . . . . . . . . l/4 oz.
Top land
. . . . . . . . . . . 0.024-0.0295
in.
Manner of adjustment . . . . . Replace precision
2nd land
0.024-0.0295
in.
3rdland .
: : : : : : : : : : : 0.020-0.0255
in.
Distance between center of large
4th land
. . . . . . . . . . . .0.020-0.0255
in.
and small end of corm. rod . . 6 . 8 9 0 - 6 . 8 9 5 i n .
Piston pin bushing:
Skirt clearance to give 3 to 6 lb. pull,
Burnish in place . . . . . . . . .862-.863h
using l/2 x 0.002 in. Feeler.
D i a m o n d bore in place . . .
.8754-8751 in.
9. CRANKSHAFT.
Permissible weight variation . . . . . . . . l/4 oz.
Dia. of main bearing journals
. . .2.250-2.249 in.
4. RING WIDTH/TYPE.
Dia. of connecting rod
bearing journals . . . . . . . .1.749-l .750in.
0 . 0 9 3 - 0 . 0 9 3 5 in. . . . Chrome plated compression
Runningclearance-main brgs. 0.0002-0.0027in.
End clearance . . . . . . . . 0.0025-0. 0105 in.
0 . 0 9 2 5 - 0 . 0 9 3 5 in. . . . Tapered face compression
(max. wear 0.012 in.)
( m a r k e d "TOP")
Main bearing adjustment
. . . Replace precision
0 . 0 9 2 5 - 0 . 0 9 3 5 in. . . . Tapered face compression
( m a r k e d "TOP")
Crankshaft out-of-round and
0.186-0.1885 in. . . . . . . Chrome plated groove
taper limit
. . . . . . . . . . . 0.0005 in.
oil cutter (spring toward top)
Crankshaft fillets ' . . 3/32 in. min.; l/8 in. max.
5-14
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