Hummer H3. Manual — part 273

Cylinder Head - Top View

Fig. 7: Cylinder Head - Top View
Courtesy of GENERAL MOTORS CORP.

Cylinder Head - Top View

Location

Size

Drill

Tool

Collar Tap Driver Insert

(Max)

(Min)

J 42385-400 . See Special Tools.

mm

(in)

mm (in)

1

M 16 x

1.5

n/a

n/a

n/a

n/a

n/a

n/a

39

1.536 33 1.300

2

M 10 x

1.5

211

212

n/a

213

214

420

39

1.536 33 1.300

3

M 6 x 1 201

202

n/a

203

204

205

20

0.788 16 0.630

4

M 8 x 1 206

207

n/a

208

209

210

39

1.536 33 1.300

5

M 6 x 1 211

212

n/a

213

214

215

39

1.536 33 1.300

6

M 10 x

1.5

211

212

n/a

213

214

215

57

2.245 54 2.127

Service

Hole

Location

Thread

Size

Drill

Counterbore

Tool

Stop

Collar Tap Driver Insert

Drill

Depth
(Max)

Tap

Depth

(Min)

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Cylinder Head - End - Front View

Fig. 8: Cylinder Head - End - Front View
Courtesy of GENERAL MOTORS CORP.

Cylinder Head - End - Front View

Cylinder Head - End - Rear View

J 42385-400 . See Special Tools.

mm (in) mm (in)

1

M 6 x 1 405

n/a

406

203

204

205

28 1.103 24 0.945

2

M 6 x 1 201

202

n/a

203

204

205

THRU

THRU

3

M 6 x 1 201

202

n/a

203

204

205

22 0.866 18 0.709

Service

Hole

Location

Thread

Size Drill

Counterbore

Tool

Stop

Collar Tap Driver

Insert

Drill

Depth
(Max)

Tap

Depth

(Min)

J 42385-400 . See Special Tools.

mm (in) mm (in)

1

M 6 x 1 201

202

n/a

203

204

205

28 1.103 22 0.866

2

M 10 x

1.5

211

212

n/a

213

214

215

28 1.103 22 0.866

3

M 24 x

1.5

n/a

n/a

n/a

n/a

n/a

n/a

THRU

THRU

4

M 8 x

1.25

206

207

n/a

208

209

210

28 1.103 23 0.906

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 9: Cylinder Head - End - Rear View
Courtesy of GENERAL MOTORS CORP.

Cylinder Head - End - Rear View

Cylinder Head - Intake Manifold Deck View

Service

Hole

Location

Thread

Size Drill

Counterbore

Tool

Stop

Collar Tap Driver Insert

Drill Depth

(Max)

Tap

Depth

(Min)

J 42385-400 . See Special Tools.

mm

(in) mm (in)

1

M 14 x

1.5

409

410

n/a

411

412

413

36

1.418 28 1.103

2

M 10 x

1.5

409

410

n/a

411

412

413

28

1.103 22 0.866

3

M 14 x

1.5

211

212

n/a

213

214

215

36

1.418 28 1.103

4

M 10 x

1.5

211

212

n/a

213

214

215

28

1.103 22 0.866

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 10: Cylinder Head - Intake Manifold Deck View
Courtesy of GENERAL MOTORS CORP.

Cylinder Head - Intake Manifold Deck View

Cylinder Head - Exhaust Manifold Deck View

Service

Hole

Location

Thread

Size

Drill

Counterbore

Tool

Stop

Collar Tap Driver Insert

Drill

Depth
(Max)

Tap Depth

(Min)

J 42385-400 . See Special Tools.

mm (in)

mm (in)

1

M 10 x

1.5

211

212

n/a

213

214

420

33

1.3

27 1.063

2

M 10 x

1.5

211

212

n/a

213

214

215

28 1.103

22 0.866

3

M 6 x 1 201

202

n/a

203

204

205

23 0.906

18 0.709

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3