Hummer H3. Manual - part 271
Surface Flatness - Exhaust Manifold
Deck
0.08 mm
0.003 in
Surface Flatness - Intake Manifold
Deck
0.08 mm
0.003 in
Exhaust Manifold
Surface Flatness
0.08 mm
0.003 in
Lubrication System
Oil Capacity - with Filter
5.6 L
6.0 qts
Oil Capacity - without Filter
5.1 L
5.5 qts
Oil Pressure - Minimum
85 kPa
12 psi at 1200 RPM
Oil Pump
Gear Diameter - Drive
73.415-73.370 mm
2.893-2.891 in
Gear Diameter - Driven
87-86.975 mm
3.428-3.426 in
Gear Pocket - Depth
15.609-15.584 mm
0.615-0.614 in
Gear Pocket - Diameter
87.065-87.040 mm
3.430-3.429 in
Gear Thickness - Drive
15.546-15.521 mm
0.613-0.611 in
Gear Thickness - Driven
15.360-15.511 mm
0.605-0.611 in
Lobe Inner Diameter - Maximum
11.9 mm
0.469 in
Relief Valve-to-Bore Clearance
2.57-1.63 mm
0.101-0.064 in
Piston Rings
Piston Ring End Gap - First
Compression Ring
0.2-0.4 mm
0.0079-0.0157 in
Piston Ring End Gap - Second
Compression Ring
0.36-0.51 mm
0.0142-0.0201 in
Piston Ring End Gap - Oil Control
Ring
0.250-0.760 mm
0.0098-0.0299 in
Piston Ring to Groove Clearance - First
Compression Ring
0.043-0.093 mm
0.0017-0.0037 in
Piston Ring to Groove Clearance -
Second Compression Ring
0.053-0.093 mm
0.0021-0.0037 in
Piston Ring to Groove Clearance - Oil
Control Ring
0.059-0.215 mm
0.0023-0.0085 in
2007 Hummer H3
2007 ENGINE Engine Mechanical - 3.7L - H3