Valve Guide Seal, Cylinder Head Page 1 of 15

002-016 Valve Guide Seal, Cylinder Head

General Information

The following procedure is for

removing the valve stem seals
with the cylinder head installed.
For removing the valve stem
seals with the cylinder head
removed, Refer to Procedure
002-004

NOTE: This procedure can

also be used for removing
valve springs, valve spring
retainers and valve collets
with the cylinder head
installed.

For the engines covered by this

procedure, different types and
color valve stem seals are
used. When replacing the valve
stem seals, always replace like
parts.

There are two types and colors

of valve stem seals used:

l "Drive-On Seal"

Colors Used:

l Green (Used for exhaust

valves)
l Yellow (Used for intake
valves).

l "Top-Hat" Seal

Colors Used:

l Green (Used for exhaust

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valves)
l Yellow (Used for intake
and exhaust valves).

Preparatory Steps

WARNING
Batteries can emit explosive
gases. To reduce the
possibility of personal injury,
always ventilate the
compartment before
servicing the batteries. To
reduce the possibility of
arcing, remove the negative
(-) battery cable first and
attach the negative (-)
battery cable last.

l Disconnect the batteries.

Refer to Procedure 013-
009
l Remove the rocker lever
cover. Refer to Procedure
003-011

Remove

NOTE: In order to remove the

valve springs with the
cylinder head installed, the
piston of the cylinder being
worked on must be brought
to TDC to support the valves.

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Use the barring tool, Part

Number 3824591, rotate the
piston to the top dead center on
the cylinder being worked on.

TDC can be determined by the

following methods:

For 3.9L and 5.9L Engines

without EGR (except Marine
applications):

Align the crankshaft speed

indicator ring on the front of
the crankshaft so that the
unpunched area of the
crankshaft speed indicator
ring is at the 12-o'clock
position. If both number 1
cylinder rocker levers are
loose, move to the following
steps. If both number 1
cylinder rocker levers are not
loose, rotate the crankshaft
360 degrees.

For all 4.5L, 5.9L engines

with EGR, 5.9L engines used
in Marine Applications, and
6.7L engines.

NOTE: The TDC mark is on

the vibration
damper/crankshaft speed
indicator ring. Do not use
the open window in the
crankshaft speed indicator
ring as TDC indication.

Align the vibration

damper/crankshaft speed

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indicator ring so that the TDC

mark is at the 12-o'clock
position. If both number 1
cylinder rocker levers are
loose, move to the following
steps. If both number 1
cylinder rocker levers are not
loose, rotate the crankshaft
360 degrees.

With the vibration

damper/crankshaft speed
indicator ring at TDC for the
number 1 cylinder, mark the
damper for the location of
TDC for the other cylinders.

For six cylinder engines:

l Mark the vibration

damper every 120
degrees with a marker
directly on the damper
or to a piece of
masking tape applied
directly around the
damper.

Service Tip: A protractor,

camshaft degree wheel or
angle/level indicator, Part
Number 3375855, can be
used to locate 120 degree
increments around the
vibration damper/crankshaft
speed indicator ring.

l Mark the damper with

the TDC indicator for
each cylinder as
shown. Two cylinders
correspond to each
120-degree line.

For four cylinder engines:

l Mark the vibration

damper every 180
degrees with a marker

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directly on the damper

or to a piece of
masking tape applied
directly around the
damper.

Service Tip: A protractor,

camshaft degree wheel or
angle/level indicator, Part
Number 3375855, can be
used to locate 180 degree
increments around the
vibration damper/crankshaft
speed indicator ring.

l Mark the damper with

the TDC indicator for
each cylinder as
shown. Two cylinders
correspond to each
180-degree line.

Remove all the rocker lever

assemblies and crossheads.
Refer to Procedure 003-008
and Procedure Refer to
Procedure 002-001

Remove all of the injectors.

Refer to Procedure 006-026

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Compress the valve springs.

Use the valve spring
compressor, Part Number
3164329.

Position the replacer screw

(4) above the injector bore
and install the two
capscrews (5) in the cylinder
head where the hold-down
clamp screws were
removed.

Tighten the capscrews (5).

Torque
Value: 5 n.m [44 in-lb]

NOTE: The valves are not

evenly spaced from the
injector bore. It is
important to align the slots
in the valve spring
compressor plate with the
valve springs.

Apply anti-seize lubricant to

the replacer screw (4)
threads. Always read and
follow label precautions.

Position the valve spring

compressor plate (1) on the

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replacer screw (4) and align

the slots in the valve spring
compressor plate with the
valve springs.

Install the washer (3) and nut

(2) on the replacer screw (4).

WARNING
Valve springs are under
tension and can act as
projectiles if released. To
reduce the possibility of eye
injury, wear safety glasses
with side shields.

Turn the nut (2) clockwise to

compress the valve springs.

Continue turning the nut (2)

clockwise until the valve
collets can be removed using a
magnetic tool, such as the end
of a magnetic screwdriver.

NOTE: Because there is a

gap between the top of the
piston and the valve face, it
may be necessary to use a
second magnet to hold the
valve stem up to remove the
valve collets.

Remove the valve collets and

the valve spring compressor
service tool.

CAUTION

With the valve collets, valve

springs, and valve spring
retainers removed, do not
rotate the engine. Rotating
the engine will allow the

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valves to drop into the

cylinder requiring the
cylinder head to be
removed or possible engine
damage.

Remove the four valve spring

retainers and valve springs.

NOTE: Prior to removing

the valve stem seals, note
the type and color of the
valve stem seal installed at
each valve location. The
same type and color valve
stem seal must be installed
when assembling the
cylinder head.

There are two types and

colors of valve stem seals
used:

l "Drive-On Seal"

Colors Used:

l Green (Used for

exhaust valves)
l Yellow (Used for intake
valves).

l "Top-Hat" Seal

Colors Used:

l Green (Used for

exhaust valves)
l Yellow (Used for intake
and exhaust valves).

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Use boot pliers, Part Number

3163293, to remove the
valve stem seals.

NOTE: The valve stem

seals can be installed by
hand. The installation tool
will aid with installing the
valve stem seals, but is
not mandatory.

Note the type, color and

location of the seal, then
discard the old seal.

Clean and Inspect for Reuse

Clean the seal tower and

valve stem with contact
cleaner, Part Number
3824510.

Inspect the exposed valve

stem for scoring or heavy
polishing. Inspect the valve
collet grooves for wear.

If the valve stem is

damaged, the cylinder head
must be removed and the

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valve replaced. Refer to

Procedure 002-004

Inspect the valve spring

retainers and valve collets for
damage or worn areas.

Discard and replace

damaged and worn parts.

Install

CAUTION

The same type and color

valve stem seal must be
installed in the same
location as removed.

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Incorrect valve stem seals

will result in excessive oil
consumption and internal
engine damage.

CAUTION

Lubricate all the valve

guide bores and valve
stems with SAE 15W-40
engine oil. Failure to
lubricate the valve guides
and valve stems can result
in premature valve guide
wear.

Install new valve stem seals of

the same type and color as
removed and in the same
location. See the General
Information section of this
procedure for valve stem seal
identification.

Lubricate the stems with SAE

15W-40 engine oil before
installing the valve stem seals.

Install new valve stem seals.

Use a valve stem installation
tool, Part Number 3164055.

Install the valve spring

retainer and valve springs.

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Compress the valve springs

using the valve spring
compressor, Part Number
3164329.

Position the replacer screw

(4) above the injector bore
and install the two
capscrews (5) in the cylinder
head where the hold-down
clamp screws were
removed.

Tighten the capscrews (5).

Torque
Value: 5 n.m [44 in-lb]

NOTE: The valves are not

evenly spaced from the
injector bore. It is
important to align the slots
in the valve spring
compressor plate with the
valve springs.

Apply anti-seize lubricant to

the replacer screw (4)
threads. Always read and
follow label precautions.

Position the valve spring

compressor plate (1) on the
replacer screw (4) and align
the slots in the valve spring
compressor plate with the
valve springs.

Install the washer (3) and nut

(2) on the replacer screw (4).

WARNING
Valve springs are under
tension and can act as
projectiles if released. To
reduce the possibility of eye

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injury, wear safety glasses

with side shields.

NOTE: Because there is a

gap between the top of the
piston and the valve face, it
may be necessary to use a
second magnet to pull the
valve stem up to remove the
valve collets.

Compress the valve springs

until the valve collets can be
installed.

Install the valve collets.

Service Tip: Use Assembly

Lube, Part Number 3163087 or
equivalent, on the valve collets
to help hold them in place until
the valve spring compressor is
released.

Remove the valve spring

compressor service tool.

Use the marks made previously

on the vibration
damper/crankshaft speed
indicator, rotate the engine
clockwise to put the next group
of cylinders at TDC.

WARNING

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To reduce the possibility of

personal injury, wear eye
protection. If the collets are
not correctly installed, they
can fly out when the stems
are hit with a hammer.

CAUTION

Rotate the engine to the next

cylinder in the firing order
before hitting the valve stem
of the cylinder previously
worked on. This will ensure
that the valve does not
contact the piston, resulting
in a bent valve and internal
engine damage.

After rotating the engine to the

next group of cylinders, hit the
valve stems of the cylinders
previously worked on with a
plastic hammer to make sure
the collets are seated.

Repeat the previous steps until

all of the valve stem seals are
replaced.

Finishing Steps

WARNING
Batteries can emit explosive
gases. To reduce the
possibility of personal injury,
always ventilate the
compartment before
servicing the batteries. To

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reduce the possibility of

arcing, remove the negative
(-) battery cable first and
attach the negative (-)
battery cable last.

l Install the injectors. Refer

to Procedure 006-026
l Install the rocker lever
assemblies and cross
heads. Refer to
Procedure 003-008 and
Procedure Refer to
Procedure 002-001
l Adjust the overhead.
Refer to Procedure 003-
004
l Install the rocker lever
cover. Refer to Procedure
003-011
l Connect the batteries.
Refer to Procedure 013-
009
l Operate the engine and
check for leaks.

Last Modified: 07-Mar-2013

Copyright © 2000-2010 Cummins Inc. All rights reserved.

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