Westerbeke 65A-FOUR - Page 62

SERVICING SPECIFICATIONS
Item
Factory Specification
Allowable Limit
Valve Stem to Valve Guide
Clearance (IN.) 0.055 to 0.085 mm
0.1 mm
0.0022 to 0.0033 in.
0.0039 in.
Valve Stem 0.0. 6.960 to 6.975 mm
(IN.) 0.2740 to 0.2764 in.
-
Valve Guide 1.0. 7.030 to 7.045 mm
-
(IN.) 0.2768 to 0.2774 in.
Clearance (EX.) 0.040 to 0.070 mm 0.1 mm
0.0016 to 0.0028 in. 0.0039 in.
Valve Stem 0.0.
7.960 to 7.975 mm
-
(EX.) 0.3134 to 0.3140 in.
Valve Guide 1.0. 8.015 to 8.030 mm
-
(EX.) 0.3155 to 0.3161 in.
Valve Spring
Intake
35.1 to 35.6 mm 34.6 mm
1.3819
to 1.4016 in. 1.3622 in.
Exhaust
41.7 to 42.2 mm 41.2 mm
1.6417to 1.6614in.
1.6220 in.
Setting Load
I Setting Length
Intake
63.547 N I 31.5 mm
45.864 N
131.5 mm
6.48 kgf
131.5 mm
4.68 kgf
I 31.5 mm
10.296 Ibs 11 .2401
14.256 Ibs 11.2401 in.
in.
Exhaust 117.6 N
I 35 mm 100 N 135 mm
12 kgf 135 mm
10.2 kgf 135 mm
26.4
Ibs 11.3780 in. 22.51bs 11.3780 in.
Tilt (Valve Spring)
-
1.0mm
0.039 in.
Rocker Arm Shaft
to Rocker Arm
Oil Clearance
0.016
to 0.045 mm
0.15 mm
0.00063 to 0.00177 in. 0.0059 in.
Rocker Arm Shaft 15.973 to 15.984 mm
-
0.0.
0.6289 to 0.6293 in.
Rocker Arm
1.0. for
16.000 to 16.018 mm
-
Shaft
0.6299 to 0.6306 in.
Valve Arm Bridge and Valve Arm Bridge
Clearance
0.018
to 0.042 mm 0.15 mm
Shaft
0.0007 to 0.0017 in.
0.0059 in.
Valve Arm Bridge
9.050 to 9.065 mm
(1.0.)
0.3563 to 0.3569 in.
-
Valve Arm Bridge
9.023 to 9.032 mm
Shaft
-
(0.0.)
0.3552 to 0.3556 in.
Push
Hod
Alignment
0.25
mm
-
0.0098 in.
~ WESTERBEKE
Engines & Generators
56