Onan RDJF - Valve Specifications; Intake Valve Dimensions and Clearances; Exhaust Valve Dimensions and Clearances; Valve Guide and Seat Specifications

VALVE-I NTAKE
Stem Diameter (Stem is tapered)
**Center
..................................................................... .3401--3411 (8.639-8.664)
**Face
....................................................................... -3386-.3396 (8.601 -8.626)
Valve Face..
..................................................................................... 42"
Guide Clearance
......................................... i ..................... .0015--0030 (.038-.076)
Stem Diameter
............................................................... .3405-.3415 (8.649-8.674)
Guide Clearance
............................................................... .0030-.0050 (.076--127)
Valve Face..
..................................................................................... 45"
Length
.............................................................................. 1.7812 (45.2424)
Outside Diameter
....................................................... .4690-.4695 (1 1.9126-11.9253)
Inside Diameter (after reaming)
Exhaust
................................................................... .3445-.3455 (8.750-8.776)
Intake
..................................................................... .3425-.3435 (8.700-8.725)
Cylinder Block Bore Diameter..
............................................. .467-.468 (11.8618-11.8872)
Bore Diameter
............................................................. 1.361-1.362 (34.570-34.595)
Insert Outside Diameter
................................................. 1.364-1.365 (34.6456-34.6710)
Seat Width..
..................................................................... .047-.062 (1.19-1.57)
Angle..
.......................................................................................... 45'
Available Insert Oversizes
.................................................................. .002 (.0508)
VALVE-EXH AUST
VALVE
GUIDE
VALVE SEATS
-005 (.127)
.010 (.254)
.025 (.635)
VALVE SPRINGS
Load-Valve Closed ............................................................. 45-49 Ib (200-218 N*)
Load-Valve Open (RDJC Prior to Spec P) ........................................ 83-93 Ib (369-414 N*)
Load-Valve Open (RDJF, RDJC Begin Spec P) ................................... 87-97 Ib (388-432 N*)
*N. Base unit, Newtons. Unit of force.
**Measure intake valve stem at points indicated.
Valve Stem Diameter
(Intake)
-- FACE
2.96 in
(75.2 mm) CENTER
1.18 in
5
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