Page 118 of 208

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment
Fuse Panel Description
13 20A Radio, Cluster, 7.3L Power Stroke
Powertrain Control Module (PCM), Keep
Alive Memory
14 10A Interior Lamps
15 10A GEM, Interior Lamp Relay
16 15A Highbeams
17—Not Used
18 5A Headlamp switch, GEM
19 15A Engine, Cluster, Cummins PC M, CAT PCM,
7.3L Power Stroke PCM (Idle Valid Switch
Input)
20 15A Starter Relay, GEM
21 10A Daytime Running Lamps (DRL)
22 15A Not Used (Spare)
23 10A Electronic Flasher
24 15A Vacuum Pump, Air Dryer, ABS, Fuel Heater
Relay
25 10A Blower Motor Relay
26 10A Right Low Beam Headlamp
27—Not Used
28 10A Left Low Beam Headlamp
29 10A Cluster, GEM, 7.3L Power Stroke PCM
(clutch switch input), APCM (7.3L Power
Stroke only)
30 30A 7.3L Power Stroke PCM Diode, 7.3L Power
Stroke Fuel Heater
31 15A Allison MD Transmission, Neutral Start
Relay and PCM (7.3L Power Stroke only)
Relay 1—Interior Lamps
Relay 2—Not Used
Relay 3—Horn
Relay 4—One Touch Down
Relay 5—Not Used
Roadside emergencies
118
Page 132 of 208

AVOID MIXING LUBRICANTS
In some cases, different brands of lubricants are not compatible with
each other and deteriorate when mixed. It is best to stick with one brand
during a maintenance interval.
CLUTCH (IF EQUIPPED)—LINKAGE LUBRICATION
Lubricate the clutch linkage using the following procedure. Refer to the
Scheduled Maintenance Guide for the service interval schedules.
Use a grease which meets Ford specifications. Refer toCapacities and
specifications.
1. Set the parking brake, shift into 1 (First) and turn the engine off.
2. Remove the inspection cover from the clutch housing.
•Transmission and clutch
removed for clarity.
3. With a grease gun, lubricate the clutch release bearing (at one
location) and the clutch release shaft (at two locations) using the grease
fittings provided.
4. Lubricate clutch release wear pads at the two locations where they
contact the clutch release bearing using a brush or similar tool.
5. Install the inspection cover onto the clutch housing.
CLUTCH FLUID (IF EQUIPPED)
Check the clutch fluid level. Refer to the Scheduled Maintenance Guide
for the service interval schedules.
During normal operation, the fluid level in the clutch reservoir should
remain constant. If the fluid level drops, maintain the fluid level at the
step in the reservoir.
Maintenance and care
132
Page 136 of 208

Adding and replacing engine coolant-Caterpillar 3126 B engine
Refer to the engine operator’s manual for engine cooling system
information.
FAN CLUTCHES
Your vehicle’s cooling system is equipped with a viscous variable speed
fan clutch.
•The fan clutch helps control cooling, increase performance, improve
fuel economy and reduce noise.
•The fan clutch is controlled by bimetallic spring sensors. Do not
tamper with these sensors as this may change their calibration or keep
the fan clutch from operating at all.
Stay clear of the fan/fan area while the engine is running or
possible personal injury may occur.
CHECKING AND ADDING POWER STEERING FLUID
Checking power steering fluid level
Check the power steering fluid level using the following procedure. Refer
to the Scheduled Maintenance Guide for the recommended service
intervals. If adding fluid is necessary, use only MERCONAT F.
1. Set the parking brake, shift into N
(Neutral) (automatic transmission)
or 1 (First) (manual transmission)
and turn the engine off.
2. Open the hood.
3. Clean the top of the power
steering fluid reservoir.
4. Remove the dipstick from the
reservoir and wipe the dipstick
clean.
5. Reinstall the dipstick. Remove it again and check the fluid level.
Maintenance and care
136
Page 169 of 208

4Approximate quantities only, does not include external lines and cooler
hoses.
5Approximate quantities only, does not include external lines and cooler
hoses.
REAR AXLE REFILL CAPACITIES
Make and model Approximate capacity
Rockwell RS-17-144116.6L (35 pints)
Rockwell RS-17-1451, 216.6L (35 pints)
Rockwell RS-21-1451, 216.6L (35 pints)
Rockwell RS-23-1601, 218.9L (40 pints)
1Quantities listed are approximate. Fill axle until the lubricant level is at
bottom of filler hole, with vehicle on level ground.
2If hubs have been removed, add an additional 0.75 liter (1.6 pints) of
axle lubricant. Add lubricant through the axle vent.
FUEL TANK CAPACITIES
Type Approximate capacity
Single tank 189.0L (50 gallons)
Dual tank 378.6L (100 gallons)
LUBRICANT SPECIFICATIONS
Item Ford Part NameFord Part
NumberFord
Specification
Brake and clutch
fluid (if
equipped)High Performance
DOT 3 Motor
Vehicle Brake
FluidC6AZ-19542-AB ESA-M6C25-A
and DOT 3
Body hinges,
hood hinges and
latches.Multi-Purpose
GreaseD0AZ-19584-AA
or F5AZ-
19G209-AAESB-M1C93-B
or
ESR-M1C159-A
Lock cylinders Penetrating
LubricantE8AZ-19A501-B N/A
Capacities and specifications
169
Page 170 of 208
Item Ford Part NameFord Part
NumberFord
Specification
Front axle
spindle pins,
steering linkage,
front and rear
spring shackle
pins, steering
column U-joints,
steering shaft
slip yoke and
universal joint,
steering shaft
pillow block
bearing, clutch
linkage fittings.Premium Long
Life GreaseXG-1-C or
XG-1-KESA-M1C75-B
Bushings, front
wheel bearings
(grease packed
type)and seals,
fuel shut-off
solenoid linkage,
air brake control
valve, linkage,
treadle hinge and
roller,
transmission and
transmission
cables, clutch
release bearing
hub,
transmission
shift lever pivot.Premium Long
Life GreaseXG-1-C or
XG-1-KESA-M1C75-B
Door
weatherstripsSilicone Lubricant F7AZ-19G208-
BA and
F5AZ-19553-AAESR-M13P4-A
Driveshaft
U-joints and slip
splines, power
steering gear
output shaft.High Temperature
4 x 4 Front Axle
and Wheel
Bearing GreaseE8TZ-19590-A ESA-M1C198-A
Capacities and specifications
170
Page 171 of 208

Item Ford Part NameFord Part
NumberFord
Specification
Spring leaves,
transmission
linkage pivots,
brake and clutch
pedal pivots and
clevises,
transmatic
detent stop,
starter motor.Motorcraft SAE
10W30 Super
Duty Motor OilXO-10W30-QSD WSS-
M2C171-B
Automatic
transmissionRefer to the Allison Automatic Transmission
Operator’s manual.
Rear axle and
front wheel
bearings (oil
filled)
1
SAE 80W-90
Premium Rear
Axle LubricantXY-80W90-QL WSP-
M2C197-A
SAE 75W-140
High Performance
Rear Axle
Lubricant
(synthetic)F1TZ-19580-B WSL-
M2C192-A
Manual
transmission
1Motor oil SAE 50
(above -18°C
[0°F])2N/A
Motorcraft SAE 30
Super Duty Motor
oil (below -18°C
[0°F])XO-30-QSD
3WSS-
M2C171-B
Engine oil-
7.3L Power
Stroke engine
1, 4
Motorcraft Super
Duty Motor oilXO-15W40-
QSD3
XO-10W30-
QSD3
WSS-
M2C171-B
Motorcraft SAE
0W-30 Super All
Season Motor oil
(synthetic)XO-0W30-LAS
Engine oil-
Cummins B and
Caterpillar 3126
B enginesRefer to the appropriate engine operator’s manual.
Capacities and specifications
171
Page 178 of 208

Vehicle System Acts
Engine Air Induction
SystemRemoval of the air duct, silencer, air cleaner,
and/or air cleaner element and baffle in air
cleaner; re-indexing of air cleaner.
Exhaust System Removal or rendering inoperative exhaust
system components including the catalytic
converter - muffler assembly, inlet pipe, outlet
pipe, resonator and flexpipe. Rotation of
horizontal exhaust system directional outlet
pipe to cause the exhaust to be emitted in a
direction other than downward.
Engine Cooling System Removal or rendering inoperative the fan
clutch. Removal or modification of the fan
shroud. Replacing a fixed fan with a fan of
increased diameter, different number of blades
or different pitch width.
MAINTENANCE
Instructions for maintenance and service of the noise control system
have been included in the Required Maintenance Services and in the
General Maintenance Checklist. To further help minimize noise emissions
degradation throughout the life of the vehicle, Ford Motor Company
recommends that this vehicle should be operated in the manner
described within the Owner Guide. Caution should be exercised by the
owner when installing replacement parts to be sure that a tampering act
(as outlined above) is not committed. Note any inspection and service
performed in the Maintenance Record.
EMISSIONS INFORMATION LABEL
Emissions information appears on the Important Engine Information
Decal located on or near the engine.
General maintenance information
178
Page 183 of 208

Check every oil
changeOil change
intervals are as
follows: Powerstroke -
10 000 ; Caterpillar -
10 000 ; Cummins -
15 000 (refer to the
Caterpillar and
Cummins service
manuals for further
instructions and
information)Engine system
Check the engine cooling system - hoses,
clamps and protection
Inspect the drive belts
Exhaust system
Inspect the entire exhaust system (including
the inlet pipe(s), muffler(s), outlet pipe(s),
clamps and fasteners) for holes, leakage,
breakage, corrosive damage and separation
from other components. Adjust, service or
replace with the same or the equivalent part.
(Also a noise emission control service)
Suspension system
Lubricate the front and rear spring pins
Tighten the front and rear spring U-bolts to the
specified torque
Driveline and rear axle system
Lubricate the U-joints and the slip yoke
Brake system
Lube the air brake foot control valve, hinge and
roller
Inspect the drum brake linings through the
inspection holes
Lubricate the brake camshafts (air brakes)
Lubricate the brake slack adjuster (air brakes)
Inspect the disc brake pads and the piston
boots (hydraulic brakes)
Clutch system
Lubricate the clutch release cross shaft and all
linkages
Check the clutch fluid
Fuel system
Drain the accumulated water or sediment from
the fuel tank(s)
General maintenance information
183