To avoid injury from flying debris when using compressed
air, wear adequate eye protection (face shield or safety
goggles) and do not exceed 276 kPa (40 psi) air pressure.
2.Blow dry with compressed air.
3.Check the rocker cover, breather passage and seal for damage. Replace as necessary.
2.1DESCRIPTION AND OPERATION OF CAMSHAFT AND ROCKER
SHAFT/ENGINE BRAKE ASSEMBLY AND RELATED PARTS
The engine uses a dual overhead camshaft and rocker shaft design. The intake and ex
haust
camshafts are timed to each other, through a geartrain, to the crankshaft. The camshaft housing
houses the camshafts and valve train. It has internal oil passages to supply oil from the block to the
camshaft and rocker bearings along with pressurized oil to the engi
ne brake rockers via the engine
brake solenoids through the exhaust shaft. T he camshaft housing is made of aluminium material.
1. Camshaft Bearing Cap6. Intake Rocker Arm
2. Bolt 120 mm7. Exhaust Rocker Arm
3. Bolt 108 mm8. Exhaust Camshaft and Gear
4. Bolt 63 mm9. Intake Camshaft and Gear
5. Engine Brake Solenoid
10. Camshaft Housing15. Intake Camshaft Tone Wheel
2.1DESCRIPTION AND OPERATION OF CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
AND RELATED PARTS
2.1.1Engine Braking
The engine uses an integral engine brake. Engine braking is controlled electronica
llybythe
engine control system with an electric solenoid. When activated, the solenoid allows oil pressure
to activate a piston on the exhaust rocker arm. Engine braking is accomplished with a single
exhaust valve in each cylinder. The exhaust camshaft uses a separate
engine brake-only lobe that
allows for double valve activation for high efficiency braking. The exhaust valve is first operated
toward the completion of the intake stroke, closed during the compression stroke and opened a
second time when the compression stroke is completed. The engine
brake system is enabled using
the following components:
For EPA07 engines:
□ Engine brake solenoid valve in front of engine applies l
ow engine braking.
□ Engine brake solenoid valve in rear of engine applies medium engine braking.
□ For high, both front and rear solenoids are activated.
□ Six exhaust rocker arms with actuator pistons.
□ Six brake rocker arms which are actuated by the brake cam lobes.
□ Exhaust camshaft has one brake cam lobe per cylinder.
For EPA07 engines, the exhaust rocker arm shaft lubricating oil passages direct pressurized oil to
the rocker arms. The exhaust rocker arm has two additional oil passages to operate t
he engine
brakes. Oil for cylinders 1 and 2 is supplied by the Front Engine Brake Solenoid Valve. Oil for
cylinders3to6aresuppliedbytheRear Engine Brake Solenoid Valve.
1. Exhaust Rocker Arm7. Exhaust Camshaft
2. Exhaust Rocker Arm with Actuator Piston8. Actuator Piston
3. Brake Rocker Arm9. Exhaust Valve
4. Oil Passage for Cylinders 1 and 2
5. Oil Passage for Cylinders 3, 4, 5 and 6
6. Exhaust Rocker Arm Sh aft
10. Brake Cam Lobe
11. Engine Brake Solenoid Valve, Front
12. Engine Brake Solenoid Valve, Rear
Figure 2-2EPA07 Engine Brake
For EPA10 engines:
□ Engine brake solenoid valve in front of engine applies low engine braking.
□ For medium engine braking, both front and rear solenoids are activated.
□ For high, both front and rear solenoids are activated, along with EGR.
□ Six exhaust rocker arms with actuator pistons.
□ Six brake rocker arms which are actuated by the brake cam lobes.
□ Exhaust camshaft has one brake cam lobe per cylinder.
2.1DESCRIPTION AND OPERATION OF CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
AND RELATED PARTS
For EPA10 engines, the exhaust rocker arm shaft lubricating oil passages direct pressurized oil to
the rocker arms. The exhaust rocker arm has two additional oil passages to operate t
he engine
brakes. Oil for cylinders 1 through 3 is supplied by the Front Engine Brake Solenoid Valve. Oil
for cylinders 4 through 6 are supplied by the Rear Engine Brake Solenoid Valve.
1. Exhaust Rocker Arm7. Exhaust Camshaft
2. Exhaust Rocker Arm with Actuator Piston8. Actuator Piston
2.2REMOVAL OF CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE
ASSEMBLY
Remove as follows:
1.Turn engine OFF, (key OFF, engine OFF).
2.Steam clean the engine.
3.Disconnect the battery power to the engine. Refer to OEM procedure
s.
4.Remove the air cleaner and the turbocharger inlet pipe and hose. Refer to OEM procedures.
5.Remove air cleaner housing. Refer to OEM procedures.
6.Remove the rocker cover. Refer to section 1.2.
7.Remove the two 14-pin fuel injector harness connectors (1) from the camshaft housing
housing (2).
NOTE:
Top Dead Center (TDC) can be confirmed by installing camshaft timing tool. For
the DD13 use Camshaft Timing Tool (W470589034000). For the EPA07 DD15 use
Camshaft Timing Tool
(W470589054000). For the EPA10 DD15 use Camshaft Timing
Tool (W470589104000).
8.Using Engine Barring tool (J-46392), rotate the crankshaft to TDC on cylinder No. 1.
2.2REMOVAL OF CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
9.Remove the Crankshaft Position Sensor (CKP) (1) from t he rear of the flywheel housing.
Refertosection.
10.To accurately locate TDC, install the flywheel housing crankshaft TDC Locating Pin
(W470589001500) into the CKP sensor hole located in the rear of the flywheel housing.
The plastic tip will protrude int
o the cutout in the tone wheel. TDC can be verified by the
[b]Remove the bolts securing the two-piece fuel injector electrical harness (1 and 3) and
remove the harness from the camshaft housing housing.
14.Remove the engine brake solenoids from the camshaft housing.
NOTICE:
Ensure when loosening the rocker shaft bolts that the bolts are
loosened fro m the inside bolts outward in 1/2 turn increments.
The increment procedure need
stobefollowedtopreventthe
rocker shaft from breaking.
15.Completely loosen all
of the adjusting screws on all of the rocker arms.
16.Loosen the seven bolts securing the intake rocker shaft to the camshaft bearing caps.
NOTICE:
Make sure that the camshaft housing housing is not damaged
during removal of the intake/exhaust rocker shaft assemblies.
2.2REMOVAL OF CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
17.Using Rocker Arm Lifter / Spacer tool (W470589044000) for the DD13, or Rocker Arm
Lifter / Spacer Intake tool (W470589004000) for the DD15, remove the intake rocker
shaft assembly.
NOTICE:
Ensure when loosening the rocker shaft bolts that the bolts are
loosened from the inside bolts outward in 1/2 turn increments.
The increment procedure needs to be followed to prevent the
rocker shaft from breaking.
18.Loosen the seven bolts securing the exhaust rocker
shaft to the camshaft caps.
19.Using Rocker Arm Lifter / Spacer Exhaust (W470589074000) for the DD13 or Rocker
Arm Lifter / Spacer Exhaust (W470589004000) for the DD15, remove the exhaust rocker
shaft assembly. When removing the EPA10 exhau
st rocker shaft, ensure the rockers are
in the up position.
NOTE:
The engine brake s
olenoids do not have to be removed unless damaged.
2.2REMOVAL OF CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
22.Remove the intake and exhaust camshaft assemblies (1 & 2) from the camshaft housing
(3). Use care not to damage intake cam tone wheel when handling.
2.4INSTALLATION OF THE CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
2.4INSTALLATION OF THE CAMSHAFT AND ROCKER SHAFT/ENGINE
BRAKE ASSEMBLY
Install as follows:
1.Verify that the crankshaft is at top dead center (TDC) on cylinder number one using
TDC Locating Pin (W470589001500) installed in crankshaft position sensor (CKP) hole
located in the flywheel housing.
2.Install Camshaft Timing Tool (W470589054000) (1) for EPA07 DD15, (W470589104000)
for EPA10 DD15, and (W470589034000) for EPA10 DD13 to the rear of the camshaft
housing. Tighten the two bo
3.Locate the etched triangle on the camshaft gear teeth and mark the teeth with a paint pen.
4.Lubricate the lower camshaft bearing surfaces and camshaft journals before inst
camshafts. Install the exhaust and intake camshaft gear assemblies into the camshaft
housing.
5.Align the marked gear teeth with the marks on the timing tool.
alling the
6.Install Camshaft Timing Tool (W470589054000) (1) for EPA07 DD15, (W470589104000)
for EPA10 DD15, and (W470589034000) for EPA10 DD13 to the front of the camshaft
housing and into the groove
s cut into the camshafts. Secure timing tool to the camshaft
with a bolt.
[a]At this point the front timing tool should slide into the camshaft grooves easily with
2.4INSTALLATION OF THE CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
[b]If there is excessive drag when installing the tool, the camshafts are out of time. If so,
repeat this procedure at Step 3.
7.Verify that the marks on the gear teeth match the marks on the timing tool.
NOTICE
The camshaft caps are numbered and need to be installed
correctly.
8.Install the seven camshaft caps onto intake and exhaust camshafts.
9.The first and seventh camshaft caps hold the engine brake solenoid to camshaft cap.
Replace the O-rings o
n the solenoid prior to reinstallation. Install the engine brake
solenoid.
NOTE:
There are 30 bolts r
etaining the DD13 camshaft assemblies (shown); 14 120 mm (M10)
bolts, seven 108 mm (M10) bolts and nine 63 mm (M8) bolts. The DD15 uses 28 bolts,
with two external bolts at the rear of the camshaft housing.
18.The dial indicator should read 0.051 - 0.257 mm (0.002 - 0.010 in). If the gear lash is
excessive between either camshaft gear and the number five idler gear, inspect the n
umber
five idler gear spindle, camshaft gear and camshaft housing. Repair as necessary.
NOTICE:
The camshaft journal area is lubrica ted by oil that has to travel
throughthe rockershaft. Iftherocker shaftis installed incorrectly,
oil passages do not lineup. This results in insufficient lubrica
tion
and damage to the camshaft journals. Incorrect shaft installation
may also result in the engine brakes not functioning and cause
damage to the rocker arm bushings.
2.4INSTALLATION OF THE CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
NOTICE:
The markings on the front of the rockers shafts must face the
front of the engine for proper rocker arm lubrication and engine
brake operation.
NOTICE:
Ensure when tightening the rocker shaft bolts t hat the bolts are
drawn down from the inside bolts outward in 1/2 turn increments,
before final torque. If the rocker shaft bolt isfully torqued without
using the increment procedure the rocker shaft can br
eak.
NOTE:
On EPA10 engines the intake and exhaust rocker shaf
ts are marked "TOP FRONT" and
“TOP REAR.” Top front must face towards the front of the engine.
20.Using Rocker Arm Lifter / Spacer Intake (W470589044000) (1) for the DD13 or Rocker
Arm Lifter / Spacer Intake (W470589004000) for the DD15, install the intake rocker
shaft
assembly to the camshaft cap and secure with seven clamping blocks and bolts.
21.Using the torque sequence shown below, torque the bolts to 50-55 N·m (36-41 lb·ft) +90°.
2.4INSTALLATION OF THE CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY
22.Using Rocker Arm Lifter / Spacer (W4705589074000) for the DD13 or Rocker Arm Lifter
/ Spacer Intake (W470589004000) for the DD15, install the exhaust rocker shaft ass
embly
to the camshaft cap and secure with seven clamping blocks and bolts.
23.Using the torque sequence shown below, torque the bolts to 50-55 N·m (36-41 lb·ft) +90°.
24.Remove timing tools.
25.Install the fuel injectors, if removed. Refer to section .
26.Lash the valves and engine brakes. Refer to section 14.15.
27.Install the fuel injector wiring harness. Refer to section .
28.Install the rocker cover. Refer to section 1.4.
29.Reconnect the battery power to the engine. Refer to OEM procedures.
2.5DD13 EGR COOLER CLEANING PROCEDURE TO REMOVE EXCESS FUEL FROM COOLER AFTER
ENGINE BRAKE SOLENOID FAILURE
Check as follows:
NOTICE:
This procedure must be followed after replacing an engine
brake solenoid due to any failure that could cause high DOC
temperature codes, excessive fuel, oil, or coolant to enter the
exhaust system. Failure to perform this procedure could cause
severe engine damage.
1.Remove the marmon clamps (2) and EGR hot pipe (3) and inspect for any signs of liquid
or moisture. The EGR hot pipe (exhaust pipe) and EGR
cooler inlet (1) should have
a black dry soot residue inside.
[a]If liquid or moisture is present in the pipe, go to the next step.
[b]If there is no sign of liquid or moisture in the p
2.5DD13 EGR COOLER CLEANING PROCEDURE TO REMOVE EXCESS FUEL FROM COOLER AFTER
ENGINE BRAKE SOLENOID FAILURE
To avoid injury from flying debris when using compressed
air, wear adequate eye protection (face shield or safety
goggles) and do not exceed 40 psi (276 kPa) air pressure.
5.Using a rubber tipped blow gun, blow compressed shop air into th
e individual tubes in
the EGR cooler to clear any excess fuel, soot, and carbon.
6.After performing the cleaning procedure, refer to section to install the:
[a]mixer pipe.
[b]exhaust gas crossover tube/lifting eye (EPA07 engines) and exhaust gas crossover
tube (EPA10 engines).
[c]venturi.
7.If the cooler has an excessive amount of buildup that cannot be removed, replace the
EGR cooler. R efer to section .
This procedure must be followed after replacing an engine
brake solenoid due to any failure that could cause high DOC
temperature codes, excessive fuel, oil, or coolant to enter the
exhaust system. Failure to perform this procedure could cause
severe engine damage.
1.Remove the clamps (2), exhaust pipe (4) and gaskets (3) from the EGR cooler (1) and
inspect and inspect for any signs of liquid or moist
ure. The EGR hot pipe and EGR cooler
inlet should have a black dry soot residue inside.
[a]If liquid or moisture is present in the pipe, go to the next step.
[b]If there is no sign of liquid or moisture in the p
The camshaft housing houses the camshafts and valve train. It has internal oil passa
ges to supply
oil from the block to the camshaft and rocker bearings along with pressurized oil to the engine
brake rockers via the engine brake solenoids through the exhaust shaft. The camshaft housing is
made of aluminium material.
Remove as follows:
1.Steam clean the engine.
2.Remove the rocker cover. Refer to section 1.2.
3.Disconnect the fuel injector harness (1) from the camshaft housing (2).
4.Remove the following high pressure fuel line components:
PERSONAL INJURY
To prevent the escape of high pressure fuel t hat can
penetrate skin, ensure the engine has been shut down for
a minimum of 10 minu
tes before servicing any component
within the high pressure circuit.Residual high fuel
pressure may be present within the circuit.
[a]High pressure fuel line bracket (1) and high pressure fuel lines from the fuel rail to
the h igh pressure fuel pump (2). Refer to section .
To avoid injury when removing or installing a heavy engine
component, ensure the component is properly supported
and securely attached to an adequate lifting device to
prevent the component from falling.
2.Using an appropriate lifting device install camshaft housing onto the cylinder head.
PERSONAL INJURY
To avoid injury when removing or installing a heavy engine
component, ensure the component is properly supported
and securely attached to an adequate lifting device to
prevent the component from falling.
3.Ensuring that no oil gets into the bearing cap
dowel pin hole, lubricate the camshaft
housing camshaft journals.
4.Install the camshaft assemblies into the camshaft housing. Refer to section 2.4.
5.Install the following high pressure fuel
line components:
[a]High pressure fuel line bracket (1), and high pressure fuel lines from fuel rail to high
pressure fuel pump (2); refer to section .
[b]High pressure fuel lines from fue
l rail to fuel injectors (3); refer to section .
[c]Fuel line from fuel rail to fuel filter module (4); refer to section .
2.Bar the engine to top dead center (TDC) with Engine Barring Tool (J-46392) (3) on
cylinder No.1 with the No. 6 valve in overlap. The dot (2) that is loca
flywheel tone ring is aligned with the edge of the pointer (1).
ted inside the
3.Locate the mark on the camshaft and mark the top of the corresponding gear tooth with a
light colored paint pen.
4.Remove the Crankshaft Position Sensor (CKP) from the flywheel housing. Refer to section
.
5.Install the flywheel TDC Locating Pin (W470589001500), through the crankshaft position
sensor hole in the flywheel housing and engage into the flywheel notch.
6.Install the rear Camshaft Timing Tool (W470589054000) for EPA07 DD15,
(W470589104000) for EPA10 DD15, and (W470589034000) for DD13 (1) onto the
camshaft housing.
7.Install the rear Camshaft Timing Tool (W470589054000) for EPA07 DD15,
(W470589104000) for EPA10 DD15, and (W470589034000) for DD13 (1) into the
grooves cut into the cams and pin it into the camshaft housing with a bolt.
8.Verify that the marks on the gear teeth match the m arks on the timing tool. If the marks do
not match, research the root caus
The gear train on the DD Platform engines is located at the rear of the engine and has three levels.
Level A consists of the outermost gears (closest to the flywheel), Level B consists o
f the middle
gears, and Level C consists of the innermost gears (closest to the block). The gears in the gear
train are both directly and indirectly driven by the crankshaft gear.
□ Level A: The outermost gears include the crankshaft gear which drive
s the outer idler gear
number one and the oil pump gear. Idler gear number four is on the crankshaft gear and
the axial power turbine drives the idler gear number four when the Axial Power Turbine
(APT) is creating power. The APT can add additional torque to the cr
ankshaft through
idler gear number four up to 260 N·m (192 lb·ft). These gears are all helical cut.
NOTE:
On the DD13, there is no Axial Power Turbine (APT) and no Idl
er gear number four. The
position of the idler gear number four is covered by a plate, and sealed with an O-ring.
□ Level B: The middle gears include idler gear number one, which drives the air compressor
gear and the idler gear number two. Idler gear number two
drives the high pressure fuel
pump and idler gear number three. These gears are all straight cut.
□ Level C: The innermost gears include inner idler gear number three which drives idler gear
number five. Idler gear number five drives both int
ake and exhaust camshafts. These
gears are all straight cut.
Gear train noise is an indication of excessive gear lash, chipped or burred gear teeth. A rattling
noise usually indicates excessive gear la
sh. A whining noise indicates too little gear lash.
Therefore, when noise develops in a gear train, the gear train needs to be inspected.
The power steering pump can be mounted in two places. If the engine is equipped with a
single-cylinder air compressor, it will be mounted to the front of the air compressor. If the engine
is equipped with a two cylinder air compressor, then the power steering pump will be mounted on
the back of the gear case to the fuel pump.
7.Install Installation Cantilever tool (J-47487) onto idler gear number three.
8.Install two bolts into the spindle and idler gear No. 3; snug the bolts.
NOTE:
When idler gear No. 3 and timing tool J–47487 are installed to the gear case, timing tool
J–47487 should come off of the gear with ease. If the timing tool is not easily removed,
that is a indication that the gea rs are not timed.
9.Check the gear lash between idler gear No. 3 and idler gear No. 5.
10.Install a dial indicator onto gear case and position the stem to rest between the teeth on
large gear of idler gear No. 3; zero out the dial indicator.
11. Hold idler gear No. 5 with a screw driver to check gear lash.
12.The lash reading on the dial indicator should be 0.079 - 0.305 mm (0.003-0.012 in.).
13.When correct gear lash is established, torque idler gear No. 3 to 60–65 N·m (44-48 lb·ft).
14.Install the spindle and gear plate onto the idler gear number two.
15.Install the spindle, idler gear number two, and the gear plate onto the cylinder block.
Torque to 100 N·m (73 lb·ft).
16.Remove the air compressor to the cylinder block (if installed). Refer to section 41.2.
17.Install the thrust washers and spindle onto the idler gear number one.
For ease of installation on idler gear number one, roll the gear into idler gear number two.
18.Install the spindle, thrust washers, idler gear number one, and gear plate onto the cylinder
block by engaging the teeth of idler gear number one into the crankshaft gear teeth first,
then roll upward into idler gear number two. Torque to 100 N·m (73 lb·ft).
19.Install the air c ompressor. Refer to section 41.4.
NOTE:
When installing idler gear number four, verify that the part number on the gear is facing
the block.
20.On the DD15, with the cone of the idler gear number four facing outward, install the t hrust
washer onto the spindle then install the spindle onto the idler gear number four.
21.On the DD15, install the assembled thrust washer, spindle and idler gear number four onto
the c ylinder block. Torque to 100 N·m (73 lb·ft).
NOTE:
Tool J-47487 should remove with ease. If not, check gears for proper installation.
22.Remove the idler gear number three tool (J-47487).
23.Check that the idler gear number one is flush with the rear side of the c rankshaft gear and
that the idler gear number four on the DD15 is fl ush with the front side of the crankshaft
gear.
24.Install the camshaft housing. Refer to section 3.3.
25.Lubricate the camshaft journals and install the camshafts into the camshaft housing.
26.Mark the camshafts TDC indicator triangle located on the inside of the camshaft gear with
a suitable m arker.
(W470589104000) for EPA10 DDl5, and (W470589034000) for DD13 into the holes at
the rear of the camshaft housing and secure to the camshaft housing with two bolts.
28.Install both of the intake and exhaust camshafts into the camshaft housing. Refer to section
2.4.
29.Rotate the camshafts until the mark on the inside of the gear aligns with the mark on
Camshaft Timing Tool (W470589054000) for EPA07 DD15, (W470589104000) for
EPA10 DDl5, and (W470589034000) for DD13.
30.Install Camshaft Timing Tool (1) (W470589054000) for EPA07 DD15 - shown,
(W470589104000) for EPA10 DDl5, and (W470589034000) for DD13 into the holes at the
slot in the front of the camshaft housing and secure to the camshaft housing with one bolt.
31.Ensure timing marks on the camshaft gears are at TDC and aligned to the marks on t he tool.
32.Install the seven camshaft caps onto intake and exhaust camshafts.
NOTE:
The first and seventh camshaft caps hold the engine brake solenoid to camshaft cap.
5.3CHECKING AND ADJUSTING GEAR LASH WITH CAMSHAFT HOUSING REMOVED
5.3CHECKING AND ADJUSTING GEAR LASH WITH CAMSHAFT HOUSING
REMOVED
This is performed with camshaft housing removed. Check and adjust as follows:
1.Remove the camshaft housing if not already removed. Refer to section 3.1.
2.Install a magnetic base-dial indicator gauge on engine block.
3.Set the dial indicator on the idler gear number five gear tooth.
4.Turn idler gear number five counterclockwise (viewed from front of engine) until “0” lash
is present, then zero the gauge on the dial indicator.
5.Check the gear lash by turning the idler gear number five stop-to-stop, verify that the lash
reading on the dial indicator is 0.043 - 0.165 mm (0.0016 - 0.0065 in.).
6.If gear lash is incorrect, continue with the following steps to adjust.
7.Remove access cover to the idler gear number three bolts.
8.Loosen the two number t hree idler gear bolts and then snug by hand.
9.Turning idler gear number five by hand will change gear lash from zero lash to maximum
lash.
NOTE:
Rotating idler gear number five counterclockwise (viewed from front of engine) will result
in zero lash. Rotating idler gear number five clockwise (viewed from front of engine) will
result in maximum lash.
10.Install a magnetic base-dial indicator gauge on engine block.
11. Set the dial indicator on the number five gear tooth.
5.3CHECKING AND ADJUSTING GEAR LASH WITH CAMSHAFT HOUSING REMOVED
12.Turn idler gear number five counterclockwise (viewed from front of engine) until “0” lash
is present, then zero the gauge on the dial indicator.
13.Push idler gear number five clockwise (viewed from front of engine) till desired gear
lash is present.
14.Tighten the two bolts on the number three gear.
15.Check gear lash by turning idler gear number five stop-to-stop; verify the lash reading on
the dial indicator should be 0.043 - 0.165 mm (0.0016 - 0.0065 in.).
16.If gear lash is OK, then final torque idler gear number three bolts to 60–65 N·m (44-48
lb·ft).
17.Install access cover and tighten.
18.Install the camshaft housing as needed. Refer to section 3.3.
6.1DESCRIPTION AND OPERATION OF DD15 & DD16 WATER MANIFOLD
AND RELATED COMPONENTS
Coolant flows from the cylinder head through an opening next to each exhaust port and into the
water manifold in the DD15 engine. The water manifold is attached to the cylinder head by a
total of nineteen bolts, including two that are shared with the coolant outlet elbow. Two 3-port
gaskets are used between the water manifold and the cylinder head.
1. Connecting Pipe7. Bolt
2. Water Manifold8.Plug
3. Bolt9. Bolt
4. Bolt
5. Coolant Outlet Elbow
6. Gask
et
10. Bolt
11. Gas
ket
Figure 6-1DD15 & DD16 Water Manifold an d Related Parts
Ensure when installing the connecting pipe, that the pipe is
lubricated with clean oil. see Figure 6-1 If it is not lubricated, the
connecting pipe cannot be fully installed and the rubber can be
cut.
NOTICE:
Do not use sealantwh en installing water manifold to thecylinder
head.
1.Install water manifold gaskets and connecting pipe onto the water manifold.
2.Install six lower water manifold bolts and start by a few threads.
3.Install water manifold onto cylinder head.
4.Install eleven upper water manifold bolts.
5.Torque the water manifolds bolts to 30 N·m (22 lb·ft), using the torque sequence illustrated
below.
6.5DD13 EXHAUST GAS RECIRCULATION COOLER WATER MANIFOLD ASSEMBLY
6.5DD13 EXHAUST GAS RECIRCULATION COOLER WATER MANIFOLD
ASSEMBLY
Refer to the following:
□ Description and Operation of DD13 Exhaust Gas Recirculation Cooler Water Manifold
Assembly, refer to section .
□ Removal of DD13 Exhaust Gas Recirculation Cooler Water Manifold Assembly,
refer to section .
□ Inspection of the DD13 EGR Cooler Water Manifold Assembly, refer to section .
□ Testing and Inspection of the DD13 EGR Cooler Water Manifold Assembly, refer to section
.
□ Installation of the DD13 EGR Cooler Water M anifold Assembly, refer to section .