BRP RORAX V-810, Shop Manual

Page: 39 / 46

Section 01 V-810 ENGINE
Subsection 06
{BOTTOM END)
NOTE: At installation replace the V-ring no.
8
of
the breather gear.
Adequately oil the ball bearing of the breather gear.
REED VALVE
1. Reed valve
2. Stopper plate
3. Screws
Removal
Remove:
- PTO cover (refer to PTO COVER above)
- reed valve retaining screws
- stopper plate
- reed valve.
Inspection
Check reed valve for cracks or other damage.
NOTE: Replace reed valve if damaged.
Installation
The installation is the reverse of the removal pro­
cedure.
TIMING CHAIN
The engine is equipped with two timing chains.
One of the timing chain is located on engine MAG
side behind the magneto cover. The second tim­
ing chain is located on engine PTO side behind the
PTO cover.
64
Removal of Magneto Side Timing Chain
1. Timing chain
2. Chain tension guide
3. Cham guide
Remove:
- valve cover, chain tensioner and camshaft tim­
ing gear {refer to CYLINDER ANO HEAD)
- magneto cover and rotor (refer to MAGNETO
SYSTEM)
- chain tension guide and chain guide.
NOTE: Mark the operating direction of the timing
chain before removal.
Carefully pull the timing chain sideward and down
from the crankcase.
Removal of PTO Side Timing Chain
Remove:
- valve cover, chain tensioner and camshaft tim­
ing gear (refer to CYLINDER ANO HEAD)
- PTO cover (refer to PTO COVER above)
- intermediate gear and breather gear (refer to
DRIVE GEARS
above)
- chain tension guide and chain guide.
NOTE: Mark the operating direction of the timing
chain before removal.
Carefully pull the timing chain sideward and down
from the crankcase.
Inspection
Inspection is the same for both timing chains.
NOTE: Check timing chain on camshaft timing
gear for excessive radial play.
Check chain condition for wear and teeth condi­
tion.
1. 7iming chain
If chain is excessively worn or damaged, replace
it as a set (camshaft timing gear and timing chain).
Installation
Installation is the same for both timing chains.
The installation is essentially the reverse of the re­
moval procedure, but pay attention to the follow­
ing details.
NOTE: Ensure to perform proper valve timing.
Lock crankshaft and camshaft at TDC (refer to
CYLINDER ANO HEAD).
Install chain then, adjust chain tension (refer to
CYLINDER ANO HEAD).
CAUTION:
Improper valve timing will damage
engine components.
TIMING CHAIN GUIDE
1 7iming chain guide
2. Bearing screw
Removal
Refer to TIMING CHAIN above.
Section 01 V-810 ENGINE
Subsection 06 {BOTTOM END
Inspection
Check timing chain guide for wear, cracks or othe
damage. Replace if necessary.
Installation
The installation is the reverse of the removal pro­
cedure.
CRANKCASE
NOTE: Before disassembly, drain engine oil anc
engine coolant (refer to appropriate VEHICLE
SHOP MANUAL).
Disassembly
Remove:
- PTO cover (refer to
PTO COVER
above)
- drive gears (refer to DRIVE GEARS ABOVE)
NOTE: Oil pump removal from crankcase is not
necessary, but recommended to see condition of
oil pump (refer to
LUBRICATION SYSTEM).
- electric starter (refer to
ELECTRIC STARTER)
1
�
1. Electnc starter
2. Screw
- magneto cover and rotor (refer to MAGNETO
SYSTEM)
- electric starter drive gears (refer to MAGNETO
SYSTEM)
- water pump housing (refer to COOLING SYS­
TEM)
in this manual
- oil filter (refer to appropriate VEHICLE SHOP
MANUAL)
- cylinder head and cylinder (refer to CYLINDER
ANO CYLINDER HEAD) in this manual
65