Subaru Robin Power Products R600 manual Valve face, Loose

*Shown in Fig. 12-18. is the method to measure the side clearance of the crankshaft. According to this method, measure the clearance between the machined face of the crankcase and the adjusting collar. The machined face of the crankcase is mounted with packing so it is necessary to set the clearance properly by allowing for a packing thick- nessof O.-??mmI.

M6 x 25mm bolt . . . . . . . . . 8 PCS.

M6 x 55mm bolt . . . . . . . . . 1 pc.

Fig. 72-78

12-4-8 INSTALLING THE INTAKE and EXHAUST VALVES

Prior to installing. remove carbon and gum deposits, from the valve, valve seat, intake and exhaust ports, and valve guide.

NOTE:

If

the

valve

face

is worn,

replace the

valve

with

a new one.

NOTE:

If

the

clearance

between

the valve guide

and

valve stem is excessively large, replace the

valve guide with

a new one.

Replace the valve guide by using a pull block and pull bolt as shown in Fig. 72-20.

A

VALVE

FACE

E

GUIDE

VALVE

SEAT

PULLER

-

VALVE

STEM

VALVE

GUIDE

VALVE

SPRING

Fig.

72-79

‘VALVE

RETAINER

Fig. 72-20

A:

Valve face

angle

45”

B:

Valve

seat

angle

45O

C:

Valve

guide

inside

diameter

I

5 59

+0.018

I

0

I

Intake valve

I

-0.020

5’59

-0.032

D:Valve stem outside diameter

Clearance (clearance between C and D) between valve guide and valve stem

Exhaust	valve	I	-0.056
		5.5@ -0.074
Intake	valve	0.02OL	-	0.05OL
Exhaust	valve	0.056L	-	0.072L

Table 72-3

L: LOOSE

-42-