4-4
ENG
PISTON PIN AND PISTON REMOVAL
1. Remove:
8
Piston pin clip
1
NOTE:
Before removing the piston pin clip, cover the
crankcase with a clean rag so you will not acci-
dentally drop the clip into the crankcase.
2. Remove:
8
Piston pin
1
8
Piston
2
8
Piston pin bearing
3
c
C
Do not use a hammer to drive the piston pin
out.
CYLINDER HEAD INSPECTION
1. Eliminate:
8
Carbon deposits
Use a rounded scrapper
1
.
2. Inspect:
8
Cylinder head warpage
Out of specification
→
Re-surface.
*************************************
Warpage measurement and re-surfacement
steps:
8
Attach a straight edge
1
and a thickness
gauge
2
on the cylinder head.
8
Measure the warpage limit.
Warpage limit:
0.03 mm(0.0012 in)
8
If the warpage is out of specification, reface
the cylinder head.
NOTE:
Rotate the head severai tires to avoid remov-
ing too much material from one side.
*************************************
CYLINDER HEAD, CYLINDER, PISTON
2
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
