Yanmar YM155d Service Manual page 102

I 1
/
( 2 5 - : . ~ 5 2 )
Clearance
1
0.0008-0.0049 (0.020-0.124)
1
0.016 (0.4)
(2-1)
Inspection and Msintenance [Model: YM135, YM 1551
Unit: inch (mm)
No.
1.
3 . lnner diameter of center pin
I I
0.8669-0.8689
Cylinder gauge
bushings
I I I
I
Item
Inner diameter of king pin bush-
ings
Outer diameter of king pin
1
4 . 1 Front and back play o f center pin
1
0.020 (0.51
1
Dial gauge
I
2 .
Outer diameter of center pin
Clearance
A
NOTES:
(1) The king pin is integrated with the knuckle spindle so the spindle should be
checked for cracks.
Standard specification
0.9850-0.9871
tO.072
(25 4 . 0 . 0 2 0 )
0.9822-0.9843
Less than 0.04 (.LO)
(2) Replacemenr of the king pin bushingr is done by press-fitting the new ones
in
Up and down play of king pin
Dial gauge
0.8641 -0.8654
(22-0.020)
-0.053
0.0016-0.0048 (0.040-0.1 23)
(3)
If there
is
excessive up and down play o f the king pin (Item 2 above), insert ad-
ditional upper coverls).
Replacement limit
0.0007-0.0339 (0.02-0.86)
(4)
When the fronr hub bearing becomes worn, rhe front wheels will develop a shimmy
(a sreering vibration orflutter in rhe vicinity of the kin,vin), which will impair sreering
srabiliry, therefore, parricular care should be paid to the fronr hub bem.ngs when the
front hub is disassembled.
Testing equipment
Cylinder gauge
Micrometer
0.016 (0.4)
(5) To adjusr rhe toe-in, fvst draw lines representing the center o f rhe tire tread and
the horizontal center of the tires, and adjust the distance between the two wheels
ar
the
fronr and rear of the tires. The acrual adjustment is made by turning rhe turnbuckle to
adjust the length of the tie-rods; afrer rhe adjustment has been complered, righren the
locknuts securely.
Micrometer