Front of vehicle
LightsVerify all lights illuminate and are clean,
headlights function (on high and low beam),
reflectors are clean, unbroken and of proper color
(red on rear, amber elsewhere) and running
lights are also clean and unbroken.
Steering gearInspect for missing or loose fasteners, power
steering fluid leaks and damage to power steering
hoses.
Steering linkageVerify connecting links, arms and rods are not
worn or cracked, joints, sockets and boot seals
are not worn or loose and that there are no loose
or missing cotter keys, nuts or bolts.
Tow hooksInspect front and rear tow hooks for damage or
loose mounting; this is particularly important on
vehicles where they are used frequently.
Front suspension
SpringsInspect for missing, broken or shifted leaves or
leaves that are in contact with (or nearly
contacting) a tire, rim, brake drum, frame or
body component.
Spring mountsInspect spring hangers, bolts, bushings, axle
mounting bolts and nuts for cracks, breaks, wear,
damage and tightness.
Shock absorbersInspect for cracks, leaks and missing or broken
bolts or bushings.
Note:Never apply grease to spring pads.
WARNING:Do not operate the vehicle if any suspension
conditions listed in theFront suspensionchart are evident.
Loss of steering or suspension could result in property damage,
personal injury or death.
Vehicle Inspection Guide
14
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)
Diesel particulate filter (diesel
engine only):Illuminates when the
soot level in the DPF has reached a
point where it requires operator
assistance. Refer toDiesel
particulate filterin the
Maintenance and Specifications
chapter and your engine operator’s
manual, for more details.
Do not shift (Allison automatic
transmission only):Illuminates
while driving if a problem has been
detected and shifting may be
restricted. Depending upon the
severity of the problem, the
read-out digit on the shifter display
may be blank. Operation may
continue in order to reach service assistance. The ECU may not respond
to shift selector requests, since operating limitations are being placed on
the transmission, i.e. upshifts and downshifts may be restricted.
Direction changes do not occur.
Refer to your transmission operator’s manual for more information.
Electronic locking differential
(if equipped):Displays when using
the electronic locking differential.
Engine oil pressure (gasoline
engine only):Illuminates when
engine oil pressure is low.
High beams:Illuminates when the
high-beam headlamps are turned on.
Instrument Cluster
23
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)
Fuse/Relay
locationFuse amp
ratingFuse description
15 10A Interior lamp relay
16 15A High beams, Indicator
17 — Not used
18 5A Dimmer switch, Interior lighting
19 15A Engine control (diesel engine only)
20 5A Starting system
21 10A DRL resistor
22 15A Air horn, Air suspension dump, Two-speed
axle, Driver-controlled locking differential
23 10A Flasher relay
24 15A Hydraulic brakes relay, Fuel heater relay
(diesel engine only), Air dryer
25 10A Blower motor relay coil
26 10A Right-hand low beam headlight
27 — Not used
28 10A Left-hand low beam headlight
29 10A Cluster, GEM
30 15A Allison electronic transmission
31 15A Mirror fold relay
Relay 1 — Interior lamps
Relay 2 — Not used
Relay 3 — Horn
Relay 4 — Not used
Relay 5 — Not used
Roadside Emergencies
155
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)
