Onan NHM Series User Manual

MODELS
BGM
NHM
Valve Face Angle
440
44°
Valve Seat Angle
45°
45°
Valve Stem
0.2795-0.2800
0.3425-0.3430
Diameter (Intake)
(7.0993-7.1120 mm)
(8. 700-8.712 mm)
Valve Stem
0.2780-0.2785
0.341 0-0.3415
Diameter (Exhaust)
(7.0612-7.0739 mm)
(8.661-8.674 mm)
Valve Guide Intake Exhaust Intake and Exhaust
Inside Diameter
0.281 0-0.2820 0.2805-0.2815
0.344-0.346
(7.1374-7.0739 mm) (7.1200-7.1501 mm (8. 738-8.788 mm)
Valve Stem
0.001 0-0.0025
0.001 0-0.0025
Clearance (Intake) (0.025-0.064 mm) (0.025-Q.064 mm)
Valve Stem
0.0020-0.0035
0.0025-0.0050
Clearance (Exhaust) (0.0508-0.0889 mm)
(0.064-0.127 mm)
Valve Lifter
0.7475-0.7480
0.7475-0.7480
Diameter (18.987-18.999 mm)
(18.987 -18.999 mm)
Valve Lifter Bore 0.7500-0.7515
0.7500-0.7515
Diameter (19.050-19.088 mm)
(19.050-19.088 mm}
Valve Lifter To
0.0020-0.0040
0.0020-0.0040
Block Clearance (0.0508-0.1 016 mm)
(0.0508-0.1 016 mm)
Valve Seat 1.4425-1.4435
1.5690-1.5700
Diameter (Intake) (36.6395-36.6649 mm)
(39. 738-39.764 mm)
Valve Seat 1.192-1.193
1.2550-1.2560
Diameter (Exhaust) (30.28-30.30 mm)
(31.877-31.902 mm)
Valve Seat Bore 1 .4395-1.4405
1.5645-1.5655
Diameter (Intake) (36.563-36.589 mm)
(39. 738-39.764 mm)
Valve Seat Bore
1 .189-1 .190
1.251 0-1.2520
Diameter {Exhaust) 30.20-30.23 mm)
(31.775-31.801 mm)

Onan NHM Series Specifications

General

Brand	Onan
Model	NHM Series
Category	Inverter
Language	English