Westerbeke W-46 - Timing Gears Inspection

INSPECTION/REPAIR
Specifications
·
Unit: mm (in.)
Item
Standard
Repair limit
Dt: 46.916 :gj
Dt- 02"' :·
lntalce
(1 84 708 +0.00394)
cam
-02)
. -0.01181
6.184
profile (o,
Ot - D2 = 6.684
(0.24346)
f¥'
(0.2631 5)
Dt: 45.944 :gJ
Dt- 02 =
Exhaust
02
(l 80882 +0.00394)
cam
. -0.01181
6.844
profile
Dt - D2 = 7.344
(0.26945)
(0.28913)
4. Check the camshaft for runout.
Straighten the camshaft in a
press or replace it, as
necessary.
Specifications
Unit: mm (in.)
Item
Standard
Service
limit
Camshaft runout
0.02 (0.0008), 0.05
max.
(0.0020)
s. Measure the diameter of each
journal in two directions to
compute the fit or clearance
in the camshaft hole.
6. Use a micrometer to measure the
ID of respective camshaft
bosses and compute the fit on
each journal. If the fit
exceeds the repair limit,
machine the holes and install
bushings.
Specif'JCations
Unit: mm (in.)
Item
St-andard
Repair
limit
Fit of camshaft
0.040- 0.090
0.15
holes on journals {0.00157 -0.00354)
(0.0059)
32
CHECKING CAMSHAFT
CHECKING CAMSHAFT RUNOUT.
· INTAKE AND EXHAUST CAM
. -
MEASURING CAMSHAFT JOURNALS.
COMPUTING THE CAMSHAFT FIT