Chevrolet 10 series 1973, Руководство по капитальному ремонту

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E N G IN E 6 -3 5
250
2 9 2 TRUCK
3 5 0 (2 4 5 & 2 5 0 HP)
307 PASSENGER
----- 307 TRUCK
3 5 0 (1 4 5 , 170 & 190 HP)
----- 4 0 0 (1 5 0 HP)
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PISTON TO BORE CLEARANCE
Preferable piston clearance— N e w piston in new or reconditioned cylinder bore.
Acceptable piston clearan ce— Used or new piston in worn cylinder bore.
M e asure piston skirt at centerline of piston. M e asu re cylinder bore 2 W ' from top of bore.
Fig. 74—Piston Selection Chart
Selection Chart (fig. 74) and determine if piston
to bore clearance is in the acceptable range.
2. If used piston is not acceptable, check Piston Size
Chart (fig. 75) and determine if a new piston can be
selected to fit cylinder bore within the acceptable
range.
3. If cylinder bore must be reconditioned, measure
new piston diameter (across center line of piston
pin) then hone cylinder bore to correct clearance
(preferable range).
4. Mark the piston to identify the cylinder for which it
was fitted.
ENGINE
(DISPLACEMENT)
PISTONS AVAILABLE
STD.
OVERSIZE
.001" .030"
2 5 0 & 307
3 .8 7 5 0
3 .8 7 6 0
3 .8 7 6 0
3 .8 7 7 0
3 .9 0 3 5
3 .9 0 5 5
2 9 2
3 .8 7 3 0
3 .8 7 4 0
3 .8 7 4 0
3 .8 7 5 0
3 .9 0 3 8
3 .9 0 6 2
3 5 0
(Exc.
2 4 5 & 2 5 0
HP)
3 .9 9 9 8
4 .0 0 0 8
4 .0 0 0 8
4 .0 0 1 8
4 .0 2 8 3
4 .0 3 0 3
3 5 0 (2 4 5 & 2 5 0
HP)
3 .9 9 5 3
3 .9 9 6 3
3 .9 9 6 3
3 .9 9 7 3 4 .0 2 5 2
4 .0 2 7 2
4 0 0
4.1241
4.1251
4.1251
4.1261
4 .1 5 2 6
4 .1 5 4 6
4 5 4
4.2481
4.2491
4.2491
4.2501
4 .2 7 7 5
4 .2 7 9 5
Fig. 75—Piston Size Chart
OVERHAUL MANUAL