DDFP SERIES ENGINES FOR FIRE PUMP APPLICATIONS MP-4. Manual - part 21

Exhaust Valve
Type ......................................Poppet
Arrangement..........................Overhead Valve
Number/Cylinder....................4
Operating Mechanism............Mechanical Rocker Arm
Type of Lifter ........................Roller/Solid
Valve Spring

Number/Valve ......................1

Valve Seat Insert

Material................................Steel Alloy

Heat Exchanger
Type ......................................Tube & Shell
Materials

Tubes & Headers ................90/10 CU/NI
Shell ....................................Copper
Electrode..............................Zinc

Liners
Type ......................................Wet Liner
Material..................................Gray Cast Iron
Ports

Type ....................................Oval
Number................................18

Main Bearings
Type ......................................Precision Half Shells
Journal Diameter ..................3.00 in. (76.2 mm)
Length ..................................1.18 in. (30.0 mm)
Projected Area/Bearing ..........11.12 in.2 (7174.2 mm2)
Material..................................Steel Backed Copper-Lead

Piston
Type and Material ..................Crosshead Malleable Iron
Cooling ..................................Oil - Cocktail Shaker

Piston Pin Bushing
Material..................................Bronze With SAE 19

Overlay, Steel Back

Piston Rings - Compression
Type

Top Ring ..............................Chrome Faced Rectangular
Remaining 2 ........................Molybdenum Rectangular

Piston Rings - Oil
Type - Upper ..........................Single Scraper with Expander
Type - Lower..........................Double Scraper with Expander
Number per Piston ................2 Sets
Location ................................Bottom of Skirt

Piston Pin
Type ......................................Crosshead - Polished & Hardened

Air Cleaner
Type ......................................Indoor Usage Only

Oiled Fabric Pleats

Material..................................Surgical Cotton

Aluminum Mesh

Camshaft
Material..................................Forged Steel
Location ................................In Block
Drive ......................................Gear
Type of Cam ..........................Ground

Camshaft Bearing - End
Journal Diameter ..................2.18 in. (55.4 mm)
Length ..................................1.50 in. (38.1 mm)
Material..................................SAE 799, Steel Back

Camshaft Bearing -
Intermediate
Journal Diameter ..................2.18 in. (55.4 mm)
Length ..................................1.50 in. (38.1 mm)
Materials................................SAE 799, Steel Back

Connecting Rod
Type ......................................Forged I Section
Material..................................Forged Steel, SAE 1141

Crank Pin Bearings
Type ......................................Precision Half Shell
Number..................................1 Pair Per Cylinder
Journal Diameter ..................2.50 in. (63.5 mm)
Length ..................................1.31 in. (33.3 mm)
Projected Area/Bearing ..........10.29 in.2 (6638.7 mm2)
Material..................................Steel Backed Copper-Lead

Crankshaft
Material..................................Forged Steel SAE 1041
Heat Treat ..............................Induction Hardened
Type of Balance ....................Dynamic

Cylinder Block
Type ......................................One Piece
Material..................................Cast Iron

Cylinder Head
Type ......................................Slab 4 Valve
Material..................................Cast Iron

CDDA MAR 97 JTW

DDFP-03DN; -03DT DDFP -L3DT; -T3DT

ENGINE MATERIALS & CONSTRUCTION

Page 47-Z-1

Page 47-Z-2

DDFP-L6FA; -T6FA; -06FA; -06FH; -L8FA; -08FA; -08FH

ENGINE MATERIALS & CONSTRUCTION

Number/Valve ......................1

Valve Seat Insert

Material................................GM3544M

Heat Exchanger
Type ......................................Tube & Shell
Materials

Tubes & Headers ................90/10 CU/NI
Shell ....................................Copper
Electrode..............................Zinc

Liners
Type ......................................Wet Liner
Material..................................Cast Iron
Ports

Type ....................................Oval
Number................................18

Main Bearings
Type ......................................Precision Half Shells
Journal Diameter ..................4.50 in. (114.3 mm)
Length ..................................1.24 in. (31.5 mm)
Projected Area/Bearing ..........5.58 in.2 (3600 mm2)
Material..................................Steel Backed Copper Lead

Piston
Type and Material ..................Crosshead Malleable Iron
Cooling ..................................Oil - Cocktail Shaker

Piston Pin Bushing
Material..................................Steel Backed Bronze

Piston Rings - Compression
Type

Top Ring ..............................Chrome Faced Keystone
Remaining 2 ........................Barrel And Chrome Faced

Piston Rings - Oil
Type ......................................Double Scraper with Expander
Number per Piston ................2 Sets
Location ................................Bottom of Skirt

Piston Pin
Type ......................................Crosshead - Polished & Hardened

Air Cleaner
Type ......................................Indoor Usage Only

Oiled Fabric Pleats

Material..................................Surgical Cotton

Aluminum Mesh

Camshaft
Material..................................Steel (SAE 1513)
Location ................................In Block, 1 Per Bank
Drive ......................................Gear
Type of Cam ..........................Ground

Camshaft Bearing - End
Journal Diameter ..................1.50 in. (38.0 mm)
Length ..................................2.12 in. (53.8 mm)
Material..................................Steel Backed Bronze

Camshaft Bearing -
Intermediate
Journal Diameter ..................1.50 in. (38.0 mm)
Length ..................................1.32 in. (33.5 mm)
Materials................................Aluminum

Connecting Rod
Type ......................................Forged I Section
Material..................................Forged Steel, (SAE 1141)

Crank Pin Bearings
Type ......................................Precision Half Shell
Number..................................1 Pair Per Cylinder
Journal Diameter ..................3.00 in. (76.2 mm)
Length ..................................1.20 in. (30.5 mm)
Projected Area/Bearing ..........3.60 in.2 (2323 mm2)
Material..................................Steel Backed Copper Lead

Crankshaft
Material..................................Steel (SAE 1548)
Heat Treat ..............................Induction Hardened
Type of Balance ....................Dynamic

Cylinder Block
Type ......................................One Piece
Material..................................Cast Iron

Cylinder Head
Type ......................................Slab 4 Valve
Material..................................Cast Iron

CDDA MAR 97 JTW

Page 47-Z-3

DDFP-12FT; -12FH

ENGINE MATERIALS & CONSTRUCTION

Number/Valve ......................1

Valve Seat Insert

Material................................GM3544M

Heat Exchanger
Type ......................................Tube & Bundle
Materials

Tubes & Headers ................70/30 CU/NI
Shell ....................................Cast Iron
Electrode..............................Zinc

Liners
Type ......................................Wet Liner
Material..................................Cast Iron
Ports

Type ....................................Oval
Number................................18

Piston
Type and Material ..................Crosshead Malleable Iron
Cooling ..................................Oil - Cocktail Shaker

Piston Pin Bushing
Material..................................Steel Backed Bronze

Piston Rings - Compression
Type

Top Ring ..............................Chrome Faced Keystone
Remaining 2 ........................Barrel And Chrome Faced

Piston Rings - Oil
Type ......................................Double Scraper with Expander
Number per Piston ................2 Sets
Location ................................Bottom of Skirt

Piston Pin
Type ......................................Crosshead - Polished & Hardened

Air Cleaner
Type ......................................Indoor Usage Only

Oiled Fabric Pleats

Material..................................Surgical Cotton

Aluminum Mesh

Camshaft Bearing -
Intermediate
Journal Diameter ..................1.50 in. (38.0 mm)
Length ..................................1.32 in. (33.5 mm)
Materials................................Aluminum

Connecting Rod
Type ......................................Forged I Section
Material..................................Forged Steel (SAE 1141)

Crank Pin Bearings
Type ......................................Precision Half Shell
Number..................................1 Pair Per Cylinder
Journal Diameter ..................3.00 in. (76.2 mm)
Length ..................................1.20 in. (30.5 mm)
Projected Area/Bearing ..........3.60 in.2 (2323 mm2)
Material..................................Steel Backed Copper Lead

Crankshaft
Material..................................Steel (SAE 1548)
Heat Treat ..............................Induction Hardened
Type of Balance ....................Dynamic

Cylinder Block
Type ......................................Two Piece
Material..................................Cast Iron

Cylinder Head
Type ......................................Slab 4 Valve
Material..................................Cast Iron

CDDA MAR 97 JTW

SECTION 6

DDFP

Page 48

PARTS INFORMATION

The parts that make up the DDFP diesel driver are provided

from tw o sources. The basic engine is manuf actured and

assembled at Detroit Diesel Corporation. The basic engine is

shipped to Clark e DD-A in Cincinnati for assembly to the

NFPA-20 requirements. Any parts required for this product

can be obtained by ordering through the authorized D.D.C.

Distributor/Dealer in your area.

The basic engine parts ordering data is contained in the

"BASIC ENGINE PARTS" section that follows. The special

parts to meet NFPA-20 requirements are detailed under the

"OPTION PARTS" section provided as a supplement to this

manual.

BASIC ENGINE PARTS

Progress in industry comes at a rapid pace. In order for the

engine manufacturer to keep pace with progress, he needs a

versatile product for the man y models and arrangements of

accessories and mounting parts needed to suit a v ariety of

equipment. In addition, engine ref inements and impro ve-

ments are constantly being introduced. All of this dynamic

action must be documented so that the equipment can be

serviced if and when it's needed. It is fully documented in

the manuf acturer's plant and in dealer P arts Departments

with Master Files and adequate supporting records. But,

what about YOU the user of this equipment? You have nei-

ther the time nor the inclination to search for specif ic part

number data. Detroit Diesel's Distrib utor/Dealer or ganiza-

tion stands ready to meet your needs. When you contact the

Distributor/Dealer, provide the follo wing data from the

engine data place at the left front of the engine:

Model Number ________________________
Serial Number ________________________
Specific Type Number as Listed on the

Engine Option Plate __________________

STANDARD OPTION PARTS

At Clarke DD-A the following "OPTION PARTS" are added to the basic Detroit Diesel engine:

• Engine Heaters and AC Junction Box

• Speed Switch

• Battery Isolator

• Air Cleaner System

• Heat Exchanger System

• Exhaust Blanket Insulation/Guard

• Lube Oil Heater (Optional Material)

• Governor Controls

• FM/UL/ULC Nameplate

• Wiring Harness

• Manual Contactors

• Instrument Panel & Gauges

• DC Junction Box

Other Useful Information:

To help identify basic engine items that may require period-

ic service, replacement or repair , the follo wing parts are

identified.

I-53
I-53
I-71, V-71 & V-92
I-71, V-71 & V-92
12V 92 Only
12V 92 Only
I-53
I-71, V-71 & V-92

TP936
TP928
TP915D
TP916D
TP958D
TP959D
PF947
PF911L

P/N

AC
AC
AC
AC
AC
AC
AC
AC

Primary
Secondary
Primary
Secondary
Primary
Secondary

USEAGE

Fuel Filter
Fuel Filter
Fuel Filter
Fuel Filter
Fuel Filter
Fuel Filter
Oil Filter
Oil Filter

MFG

ENGINE(S)

ITEM

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