BRP RORAX V-810, Руководство по ремонту

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Section 01 V-810
ENGINE
Subsection 05 (CYLINDER AND HEAD)
1
Piston r ing compressor tool
2
Piston
3
Cylmder
NOTE:
Put timing chain through the chain pit then
put the cylinder in place.
CAUTION: Chain guide has to be fixed between
cylinder and cylinder head.
Install cylinder head and the other parts in accor­
dance with the proper installation procedures.
PISTON
Removal
Remove:
- cylinder head (see
CYLINDER HEAD
above)
- cylinder (see
CYLINDER
above).
Place a rag under piston and in the area of timing
chain compartment.
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Remove one piston circlip and discard it.
1. Piston
circlip
NOTE: The removal of both piston circlips is not
necessary to remove piston pin.
Push piston pin out of piston.
1. Piston
2. Piston pin
Detach piston from connecting rod.
Inspection
Piston
Inspect piston for scoring, cracking or other dam­
ages. Replace piston and piston rings if neces­
sary.
Using a micrometer, measure piston at
8
mm
(.315
in) perpendicularly
(90°)
to piston pin.
vmr2006-043
1.
Measuring perpendicu�rly (90") to
p
i s t o
n pm
A. 8
mm
(.315 m)
The measured dimension should be as described
in the following table.
If
not, replace piston.
PISTON MEASUREMENT
Minimum New 90.950 mm (3.5807 in)
Maximum New 90.966 mm (3.5813
in)
Service
hmit
90.850 mm (3.577 in)
Piston/Cylinder Clearance
Adjust and lock a micrometer to the piston dimen­
sion.
1. Micrometer set to t h e piston dimension
With the micrometer set to the dimension, adjust
a cylinder bore gauge to the micrometer dimen­
sion and set the indicator to
O
(zero).
Section 01 V-810
ENGINE
Subsection 05 (CYLINDER AND HEAD)
1. Use the micrometer to set the cylmder bore gauge
2 Dial bore gauge
TYPICAL
1.
Indicator set to O (zero)
Position the dial bore gauge
20
mm
(
.
787
in) above
cylinder base, measuring perpendicularly
(90°)
to
piston pin axis.
Read the measurement on the cylinder bore
gauge. The result is the exact piston/cylinder wall
clearance.
PISTON/CYLINDER CLEARANCE
Minimum New 0.027 mm (.0011 in)
Maximum
New
0.057 mm (.0022 in)
Service
limit 0.100
mm
(.0040
in)
NOTE:
Make sure used piston is not worn. See
PISTON MEASUREMENT
above.
If clearance exceeds specified tolerance, replace
piston by a new one and measure piston/cylinder
clearance again.
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