Section 01 ENGINES (1503 4-TEC)
Subsection 06 (CYLINDER HEAD)
Inspection
Check each lobe and bearing journal of camshaft
for scoring, scuffing, cracks or other signs of wear.
Measure camshaft bearing journal diameter and
lobe height using a micrometer.
Measure
clearance
between
both
ends
of
camshaft and cylinder head.
A
R1503motr102A
B
C
D
A
C A B
C
A
C A B
C
A
A. Camshaft lobe (exhaust valves)
B. Camshaft lobe (intake valves)
C. Camshaft bearing journal
D. Camshaft bearing journal — engine front
CAMSHAFT LOBE — EXHAUST VALVE
NEW MINIMUM
31.699 mm (1.248 in)
NEW MAXIMUM
31.809 mm (1.252 in)
SERVICE LIMIT
31.670 mm (1.247 in)
CAMSHAFT LOBE — INTAKE VALVE
NEW MINIMUM
31.480 mm (1.239 in)
NEW MAXIMUM
31.590 mm (1.244 in)
SERVICE LIMIT
31.450 mm (1.238 in)
CAMSHAFT BEARING JOURNAL
NEW MINIMUM
39.892 mm (1.5705 in)
NEW MAXIMUM
39.905 mm (1.5711 in)
SERVICE LIMIT
39.860 mm (1.5693 in)
CAMSHAFT BEARING JOURNAL —
ENGINE FRONT
NEW MINIMUM
24.939 mm (.9818 in)
NEW MAXIMUM
24.960 mm (.9826 in)
SERVICE LIMIT
24.910 mm (.9807 in)
CAMSHAFT BORE MEASURED IN DIAMETER
NEW MINIMUM
40.000 mm (1.5748 in)
NEW MAXIMUM
40.016 mm (1.5754 in)
SERVICE LIMIT
40.050 mm (1.5767 in)
CAMSHAFT BORE — ENGINE FRONT
MEASURED IN DIAMETER
NEW MINIMUM
25.000 mm (.9842 in)
NEW MAXIMUM
25.013 mm (.9848 in)
SERVICE LIMIT
25.050 mm (.9862 in)
Replace parts that are not within specifications.
Installation
For installation, reverse the removal procedure.
Pay attention to the following details.
Grease the camshaft bearing journals well by us-
ing the Klueber Isoflex grease (P/N 293 550 021)
or a similar product.
Install camshaft then place the camshaft lock
no. 20
in the slot.
1
R1503motr101B
1. Camshaft lock position
For other parts, refer to proper installation proce-
dure.
VALVE SPRING
Removal
Remove:
– rocker arms
– cylinder head.
Compress valve springs
no. 22
and
no. 23
. Use
valve spring compressor clamp (P/N 529 035 724)
and valve spring compressor cup (P/N 529 035
725).
80
smr2005-036
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Содержание Rotax 1503 4-Tec 2005
Страница 1: ...C M Y CM MY CY CMY K www SeaDooManuals net ...
Страница 2: ...2005 Engine Shop Manual ROTAX 1503 4 TEC ENGINES www SeaDooManuals net ...
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Страница 123: ...NOTES www SeaDooManuals net ...
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