Westerbeke W-27 Service Manual

All measurements are in mm unless otherwise noted.
To convert mm to inches, multiply by .03937
DESCRIPTION
PISTON
0.0. (skirt end)
Piston to cylinder clearance
Oversize
PISTON PIN
Type
0.0.
Piston to pin clearance
Pin to connecting rod clearance
Piston protrusion above block surface
PISTON RINGS
Number of compression rings
Number of oil rings
Ring side clearance
Compression
No.1
No.2 & 3
Oil ring
Ring gap
CONNECTING ROD
Bend and distortion
Sideplay clearance
CONNECTING ROD BEARING
Standard Type
Oil clearance
Undersize
CRANKSHAFT
Bend
End play
Main 0.0.
Conn.O.O.
Undersize finish tolerance
Main (common to all)
Conn. (common to all)
MAIN BEARING
Standard type
Oil clearance
Undersize
SERVICE STANDARDS
REPAIR (or
MODELS STANDARD VALUE
replacement)
REPLACEMENT
Required at: Required at:
A
73
B C
78
A B C
0.07-0.08
.178 0.3 BIO
A B C 0.25, 0.50, 0.75
A C
Semi-floating type
B Full-floating type
A
C 19
B
23
B -.002 (slight force fit-heat)
0.08
A C
Press-fit load: 500 - 1500 kg
B
.014 - .038
.015
.015
A B
C
0.6 -1.1
A B C
3 (No.1: chrome plated barrel type, semi-
keystone. No.2 and NO.3: taper ring.)
A B
C
1 (chrome plated with coil expander)
A B C .06 .11
0.3
A B C
.05 - .09
0.2
A B C .03 - .07 0.2
A B C
.22 - 040
1.25
1.5
A B C
0.15
A B
C
0.1 - 0.35
0.5
A
B
C
Kelmet metal with back metal
A B C
0.035 - 0.05 0.06 0.15
A B
C
0.25, 0.50, 0.75
A B C
0.05
A B
C
0.06 - 0.3
-0.3
A C
52
-0.15
-0.90
B 57
-0.15
-0.90
A
C
42
-0.15 -0.90
B
48
-0.15
-0.90
A
C
0-0.015
B
0.040 - 0.055
A B C -0.035 - -0.050
A B C Kelmet metal with back metal
(flanged metal for center bearing only)
A
B-
e 0.04 - 0.05
.06 0.10
A B
C
0.25,0.50,0.75
(continued)
Engines & Generators
9

Westerbeke W-27 Specifications

General

Brand	Westerbeke
Model	W-27
Category	Engine
Language	English