Page 230
REPAIR INSTRUCTIONS, PART 1
CYLINDER HEAD OVERHAUL
[213 EV]
Special Tools Required
앫 Basic Heavy-Duty Dowelout Kit PT6575
앫 Collet PT6390-4
앫 Cylinder Head Core Plug Installer
(13/16-inch Cup Plugs) J 34684
앫 Cylinder Head Core Plug Installer
(1-1/16-inch Cup Plugs) J 34687
앫 Depth Gauge J 26948
앫 Dowelout, Extractor (7/16 inch) PT6570-11
앫 Driver Handle J 8092
앫 E7 Cutter Head J 37719
앫 Fire Ring Groove Cutter J 29600-C
앫 Injection Nozzle Sleeve Extractor J 29880
앫 Injection Nozzle Sleeve Installer J 29297
앫 Model MST 50 Universal Spring Tester
J 22738-02
앫 Prussian Blue
앫 Slide Hammer J 2619-01
앫 Torque Wrench J 24407
앫 Valve Guide Installer J 46549
앫 Valve Guide Reamer J 37481
앫 Valve Guide Remover J 37482
앫 Valve Stem Seal Installer J 45730
앫 Valve Stem Seal Remover J 38820-1 (Early
Seal Design)
앫 Valve Stem Seal Remover J 45915 (Current
Seal Design)
앫 Valve Seat Extractor Kit PT6391
앫 Valve Insert Installer Set J 38586
앫 Valve Seat Insert Counterbore HT77136
앫 Valve Seat Removal Set J 45796
앫 Valve Spring Compressor J 43887 (Valves
with Tip-End Rotators)
앫 Valve Spring Compressor J 29294-B
(Valves with Bottom Rotators)
앫 Valve Yoke Guide Pin Installer J 29296
Inlet and Exhaust Valve Removal
[213 NB]
GENERAL INFORMATION
Current-production engines use a bottom valve
rotator as shown in Figure 242. The bottom
rotator is installed under the valve spring(s), and
replaces the tip-end rotator which was used in
early-production engines. With the bottom valve
rotators, there is a lesser amount of valve key
protrusion above the valve spring retainer washer
when compared with key protrusion above the
rotator on early-production engines. The top of
the valve keys are practically flush with the top of
the valve retainer washers. The tip-end rotator,
however, has an undercut on top, so the top of
the key protrudes approximately 3/32-inch as
shown in Figure 241.
241
Figure 241 — Valve Key Protrusion
5-111.bk Page 230 Monday, July 10, 2006 2:26 PM
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