CF MOTO CF125T-19 2003, Руководство по обслуживанию

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8-1
8 Cylinder cover Cylinder head Cylinder body valving system
8
Overhauling info................................. 8-1 Dismantling of cylinder head.............. 8-11
Trouble shooting................................ 8-3 Replacement of valve guide...................... 8-15
Cylinder compression pressure .......8-4 Inspection & Correction of valve-seat ring 8-15
Valve clearance adjustment ..............8-5 Assembly of cylinder head ...................... 8-17
Disassembly of reed valve comp...............8-6 Inspection of cylinder body ................ 8-18
Disassembly of cylinder cover.................. 8-7
Installation of cylinder body ................... 8-19
Disassembly of Camshaft bracket comp 8-8 Installation of cylinder head ....................... 8-20
Disassembly of cylinder head....................8-9 Installation of camshaft bracket comp............ 8-21
Disassembly of cylinder body
...............8-10 Installation of cylinder cover ....................... 8-23
Overhauling info
Operating cautions
l
The cylinder cover
、
camshaft comp.
、
camshaft bracket comp.
、
rocker arm
、
cylinder head
comp. and cylinder body comp. can be overhauled under the state of locomotive vehicle.
l
Do not damage joint face when disassembling cylinder cover 、 cylinder head comp. and cylinder
comp..
l
When removing the spare parts, make marks so as to install to the original places.
l
After dismantling, wash clean and blow dry with compressed air the spare parts before checking and
measuring.
l
Apply lubricating oil to the camshaft comp neck 、 cam surface 、 rocker arm shaft and inner hole of
rocker arm before assembling.
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The lubricating oil to the camshaft assembly is supplied through the oil channels in cylinder body
comp. 、 cylinder head comp. and cylinder cover.
l
Lubricating channels of the cylinder head cover 、 cylinder head comp. and cylinder body comp
must be cleaned before assembling of these parts.
Overhauling standard
S ta n d a r d S e r v ic e li m i t Ite m
C F 1 2 5 C F 1 5 0 T
C y l i n d e r c o m p r e s s i o n p r e s s u r e 7 0 0 k P a ( 7 k g f / c m 2 ) @ 2 6 0 r / m i n —
IN 0 .0 5 m m
—
V a lv e c le a r a n c e
E X 0 .2 0 m m —
C y li n d e r h e a d p la n e s u r fa c e — 0 .0 5 m m
IN 3 0 .7 4 -3 0 .8 6 m m 3 0 .6 9 m m C a m -
s h a ft
C a m t o p h e ig h t
E X 3 0 .3 3 -3 0 .4 5 m m 3 0 .2 8 m m
I n n e r d i a m e t e r o f r o c k e r
A
r m h o l e
IN /E X 1 0 .0 0 0 -1 0 .0 1 5 m m 1 0 .1 0 m m V a lv e
r o c k e r a r m
O u t e r d i a m e t e r o f
R o c k e r a r m s h a f t
IN /E X 9 .9 7 8 -9 .9 8 7 m m 9 .9 1 m m
IN 4 .9 7 5 -4 .9 9 0 m m 4 .9 6 5 m m O u t e r d i a m e te r o f Va lv e s t e m
E X 4 .9 5 5 -4 .9 7 0 m m 4 .9 4 5 m m
IN 5 -5 .0 1 2 m m 5 .0 4 m m In n e r d i a m e te r o f Va lv e g u i d e c o lla r
E X 5 -5 .0 1 2 m m 5 .0 4 m m
IN 0 .0 1 0 -0 .0 3 7 m m 0 .0 7 5 m m C le a r a n c e b e t w e e n v a lv e s t e m a n d g u id e
E X 0 .0 3 0 -0 .0 5 7 m m 0 .0 9 5 m m
D r i v i n g h e i g h t o f v a lv e g u id e IN /E X 1 1 .9 -1 2 .1 m m —
V a lv e
g u id e
C o n t a c t in g w i d t h o f v a lv e -s e a t r in g IN /E X 0 .9 -1 .1 m m 1 .8 m m
V a lv e
s p r i n g
F r e e le n g th ( E x t e rn a l s p r in g /in te rn a l
s p r i n g )
IN /E X 3 5 .0 /3 2 .3 m m 3 3 .5 / 3 0 .8 m m
I n n e r d i a m e t e r 52.4-52.419mm 5 8 - 5 8 . 0 1 9 m m 5 2 .4 4 9 m m 5 8 .0 4
U p p e r s u r f a c e d i s t o r t i o n — 0 .0 5 m m
R o u n d n e s s — —
Cylinder
C o l u m n — 0 .0 5 m m