TM 5-3805-281-24-2
Cylinder Head and Valves
CYLINDER HEAD AND VALVES SPECIFICATIONS
ITEM
SPECIFICATION
WEAR LIMIT
Valve Lift at 0.00 mm (in.) Clearance:
Intake ...........................................................................................................
13.53--13.71 mm (0.533--0.540 in.)
12.65 mm (0.498 in.)
Exhaust ........................................................................................................
14.52--14.70 mm (0.572--0.579 in.)
13.64 mm (0.537 in.)
Valve Clearance With Engine Cold
(Rocker Arm-to-Valve Tip):
0.46 0.05 mm (0.018 0.002 in.)
Intake ...........................................................................................................
----
0.71 0.05 mm (0.028 0.002 in.)
Exhaust ........................................................................................................
----
Valve Spring Compressed Height:
Valve Closeda
Intake ...........................................................................................................
52.5 mm @ 345-399 N (2.07 in. @
----
78-90 lb-force)
Exhaust ........................................................................................................
54.5 mm @ 284--338 N (2.15 in. @
----
78--90 lb-force)
Valve Open-Intake .......................................................................................
38.1 mm @ 810--880 N (1.50 in. @
----
182--198 lb-force)
Exhaust ........................................................................................................
38.5 mm @ 797--867 N (1.52 in. @
----
179--195 lb-force)
Valve Head O.D.:
Intake ...........................................................................................................
50.87--51.13 mm (2.003--2.013 in.)
----
Exhaust ........................................................................................................
46.87--47.13 mm (1.845--1.856 in.)
----
Valve Stem O.D.:
Exhaust ........................................................................................................
9.44--9.46 mm (0.3717--0.3724 in.)
----
Intake ...........................................................................................................
9.46--9.49 mm (0.3724--0.3736 in.)
----
Oversize Valve (Stem) Available ................................................................
0.08, 0.38, 0.76 mm (0.003, 0.015,
----
0.030 in.)
Valve Guide I.D. ..........................................................................................
9.51--9.54 mm (0.3745--0.3755 in.)
Valve Stem-to-Guide Clearance:
Exhaust ........................................................................................................
0.051--0.102 mm (0.002--0.004 in.)
_____
Intake ...........................................................................................................
0.025--0.076 mm (0.001--0.003 in.)
_____
29.25 0.25
Valve Face Angle (Intake and Exhaust) .....................................................
_____
30 0.50
Valve Seat Angle (Intake and Exhaust) ......................................................
_____
Valve Seat Width:
Exhaust ........................................................................................................
2.0--3.8 mm (0.79--0.150 in.)
_____
Intake ...........................................................................................................
1.4--3.8 mm (0.055--0.150 in.)
_____
Valve Seat Concentricity With Guide ..........................................................
0.051 mm (0.0020 in.)
_____
a
Free length may vary slightly between springs.
Continued on next page
RG,RG34710,1066
1923OCT971/2
