Westerbeke W-46 - Page 54

2. 2 Inspection
LUBRICATION.SYSTEM
a. Running clearance between
outer rotor and inner rotor.
using a feeler gauge, check
the clearance at various
positions. If the reading
exceeds the service limit,
replace both rotors.
Specifications
Unit: mm (in.)
Item
Standard
Service
limit
Clearance between
0.013-0.15
0.25
inner rotor and
(0.00051 - 0.0059)
(0.0098)
outer rotor
b. Sliding clearance
rotors and cover.
between
This clearance is required
not to be greater than
0 • lSmm ( 0 • 0 0 0 5 91 in • ) I f
this limit is exceeded grind
off the mating face of the
body to reduce the clear-
ance.
Specifications
Unit: mm (in.)
Item
Standard
Repair
limit
Clearance between
O.D4-0.09
0.15
rotors and cover (0.0016 -0.0035)
(0.0059)
c. Radial clearance between
outer rotor and pump body.
Insert a feeler gauge be-
tween the outer rotor and
the body. If the clearance
checked is greater than the
limit, replace the worn
part.
Specifications
Unit: mm (in..)
Item
Standard
Repair
limit
Clearance of outer
0.2-0.28
0.5
rotor in body
{0.0079-0.0110)
{0.020)
Checking rotor-to-rotor clearance
Checking rotor-to. cover clearance
Checking rotor-to-body clearance
Engines & Gener.«ors
52