Onan DJA Series User Manual

VALVE, EXHAUST (Hardened Chrome Alloy)
Stem Diameter 0.3405 (8.65 mm) 0.3415 (8.67 mm)
Clearance in Guide 0.0025 (.063 mm) 0.0045 (.114 mm)
Seat Angle 45-degrees
Valve Clearance 0.008 (.20 mm)
VALVE GUIDE
Length • 1-25/32 (45.24 mm)
Outside Diameter 0.4690 (11.91 mm) 0.4695 (11.93 mm)
Cylinder Block Bore Diameter 0.467 (11.86 mm) 0.468 (11.89 mm)
Inside Diameter (after reaming)
Exhaust 0.344 (8.74 mm) 0.345 (8.76 mm)
Intake 0.342 (8.69 mm) 0.343 (8.71 mm)
VALVE SEATS (Hardened Chrome Alloy Faced)
Valve Seat Bore
Diameter 1.361 (34.57 mm) 1.362 (34.59 mm)
Depth (from cylinder head face) 0.433 (11.00 mm) 0.439 (11.15 mm)"
Seat Outside Diameter 1.364 (34.65 mm) 1.365 (34.67 mm)
Seat Width - 3/64 (1.19 mm) 1/16 (1.59 mm)
Seat Angle 45-degrees
Available Oversizes 0.002 (.05 mm); 0.005 (.13 mm);
0.010 (.25 mm); 0.025 (.64 mm)-
VALVE SPRINGS
Free Length 1-7/8 (22.23 mm)
Length, Valve Closed 1.528 (38.81 mm)
Load, Valve Closed 45 Ibs. (20.41 kg) 49 Ibs. (22.23 kg)
Length, Valve Open 1.214 (30.84 mm)
Load, Valve Open 83 Ibs. (37.65 kg) 93 Ibs. (42.18 kg)
STARTING MOTOR
Rotation Counterclockwise
Pinion Clearance to Pinion Stop
(solenoid plunger bottomed) 0.070 (1.78 mm) 0.120 (3.05 mm)
Pinion Rest Position - Distance from pinion housing
mounting face to outer edge of pinion 1-9/32 (32.54 mm) 1-15/32 (37.31 mm)
Armature End Play 005 (.13 mm) ' .030 (.76 mm)
Test Specifications
No Load 10 volts - 80 amps (288 kC)
5000 rpm per Min.
Stall Torque 4 volts - 420 amps (1512 kC)
7.8 ft. Ibs. per Min. (8.8 N.m/min)
Brush Spring Tension 32-40 oz. (.91 kg - 1.13 kg)
with new brushes

Onan DJA Series Specifications

General

Brand	Onan
Model	DJA Series
Category	Engine
Language	English