Cylinder Head and Valves
02
020
34
RG,RG34710,85 –19–16OCT00–2/2
RG8824 –UN–11DEC97
Installing Valve Guide
A—JDG1167 Valve Guide Installation Adapter
B—JDG164A Valve Seat Pilot Driver
C—Replacement Valve Guide
Install Valve Guides
1. Assemble JDG1167 Valve Guide Installation Adapter
(A) and JDG164A Driver (B) onto replacement valve
guide (C).
2. Position cylinder head resting on combustion face.
3. Position valve guide over bore in cylinder head and
press guide in head until adapter bottoms on machined
surface.
4. Measure valve guide installed height. Installed height
should be as follows:
Specification
Valve Guide—Installed Height 14.5—15.5 mm (0.57—0.61 in.)................
5. Insert a valve stem through valve guide to check for
adequate clearance. Valve stem should move freely in
valve guide.
RG,RG34710,86 –19–30SEP97–1/1
Clean and Inspect Valve Seats
1. Use an electric hand drill with copper or brass (soft)
wire brush to remove all carbon on valve seats.
2. Inspect seats for excessive wear, cracks, or damage.
3. Check entire combustion face for rust, scoring, pitting,
or cracks.
CTM100 (06APR04)
02-020-34
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=106