Long 360 Series Service Manual page 55

"ENGINES FITS AND TOLERANCES-510" CONT'D.
Size of New Parts and Wear Limits
DESCRIPTION mm
Oia. of timing idler gear axle .......................... .
31.975. 32.000
1.0. of timing idler gear bushing ....................... .
32.050 . 32.075
Assembly clearance between idler gear axle and bushing .. .
0.050 . 0.1 00
Thickness of idler gear thrust washer ................... .
1 .450 . 1 .500
Valve spring specifications:
-free length ....................................... .
66.5
-closed-valve length (6.55 . . . , . . 7.55 kg
=
14.4 ..,.. 16.6 lb
loading) ......................................... .
37.5 ... 38.5
-open-valve length (1 5.4 . . . , . . 16.7 kg
=
33.9 36.8 lb
loading) ......................................... .
26.8 ... 28.8
-Test length (32 daN
=
71.91 lbs. test load) ............. .
40.5. 41.5
-Test length (50.1 daN
=
112.581bs. test load) .......... .
30.7. 30.9
Rocker-arm spacing spring specifications:
-free length ....................................... .
59.500
-test length (4. 7 · 5.3 daN
=
10.56 · 1 1.91 lb. test load) .... .
44.000
Ill. Power Train
Oia. of standard size pistons, measured at a point 50mm. (1.968 in.)
above the base of the skirt (Figure 42):
-Class A ..........................................
·I
101.740 · 101.752
-Class B........................................... 101.752 · 101.764
Max. dia. of standard size pistons, measured at the base of
the skirt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.824 · 101.848
Running clearance between pistons and cylinder
liners belonging to the same class of tolerance ........ .
Oia. of oversize pistons, measured 50 mm. off skirt:
-0.2 mm. (0.008 in.) ................................. .
-0.4 mm. (0.016 in.) ................................. .
-0.6 mm. (0.020 in.) ................................. .
-0.8 mm. (0.032 in.) ................................. .
Oia. of piston pin:
-standard ......................................... .
-0.20 mm. (0.008 in.) oversize ......................... .
1.0. of connecting rod small end bushings (fitted):
-standard size ..................................... .
-0.20 mm. (0.008 in.) oversize ......................... .
Assembly clearance between piston pin and small
end bushings ..................................... .
0.0. of connecting rod small end bushings .............. .
Oia. of small end bushing bore locations ............... :.
Interference fit between small end bushings and
connecting rod bore ............................... .
1.0. of piston bosses:
-standard size ..................................... .
Assembly clearance of piston ring in grooves:
-1st ring .......................................... .
-2nd ring ......................................... .
-3rd ring .......................................... .
End gap (with piston and rings installed in cylinder liner):
-1st ring .......................................... .
-2nd ring ......................................... .
-3rd ring .......................................... .
Engine· 51
0.188. 0.212
101.940. 101.952
102.140. 102.152
102.340. 102.352
102.540. 102.552
31.983. 31.990
32.183. 32.190
32.005. 32.012
32.205. 32.212
0.015. 0.029
35.979 . 36.017
35.861 . 35.899
-0.080. -0.156
31.983. 31.990
0.060 . 0.092
0.050 . 0.082
0.050 . 0.082
0.350 . 0.550
0.400 • 0.650
0.300 . 0.450
in.
1.2588 . 1.2598
1 .2618 . 1.2628
0.0020 . 0.0040
0.0571 . 0.0591
2.6181
1.476 ... 1.516
1.055 ... 1.134
1.5944 . 1.6338
1.2086. 1.2165
2.3425
1.7322
4.0055 . 4.0059
4.0059 . 4.0064
4.0088 . 4.0098
0.0074 . 0.0083
4.0133. 4.0138
4.0212. 4.0217
4.0291 . 4.0296
4.0370. 4.0374
1.2592 . 1.2594
1.2670 . 1.2673
1 .2600 . 1.2603
1.2679 . 1.2682
0.0006 . 0.0011
1.4165. 1.4180
1.4118. 1.4133
-0.0031 . -0.0061
1.2592 . 1.2594
0.0023 • 0.0036
0.0020 . 0.0032
0.0019. 0.0032
0.0140. 0.0216
0.0157. 0.0256
0.0118. 0.0177