
TECHNICAL INFORMATION
OIL SPECIFICATIONS
E
NGINE
Heavy-duty engine oil SAE 15W-40 meeting API
Classification CG-4.
A
UTOMATIC
T
RANSMISSION
The transmission must be filled with
Dexron
IIE,Dexron III
or automatic transmission fluid or
any equivalent Class C4 hydraulic fluid.
D
IFFERENTIAL
Multigrade gear oil meeting MIL-L-2105-D:
85W140 is recommended for use in drive axle.
This lubricant performs well over a broad
temperature range, providing good gear and
bearing protection in a variety of climates. If
temperature drops below 10°F (-12°C), 80W90
should be used, and below -15°F (-26°C), 75W90
should be used. In extreme conditions or for
better performance, full synthetic gear oil can be
used.
F
AN
G
EARBOX
Synthetic oil
Mobil SHC 634
is recommended for
the fan gearbox.
P
OWER
S
TEERING
R
ESERVOIR
This reservoir must be filled with automatic
transmission oil,
Dexron IIE
,
Dexron III
or
Mercon fluid.
W
HEEL
B
EARINGS
The front and tag axle wheel bearings must be
filled to the level mark in the cap using
differential oil. Drive axle wheel bearings are
lubricated by the differential oil. Maintain
differential oil level to ensure adequate
lubrication of drive axle wheel bearings at all
times. Refer to "Care And Maintenance" chapter
under "Wheel Bearing Oil Level" heading.
On vehicles equipped with grease lubricated
wheel bearings, pack with wheel bearing grease.
PRE-HEATING SYSTEM
(OPTIONAL)
W
EBASTO
Model DBW2020
Heating output
80 000 Btu/hr
(23 300 W)
Fuel type
same as engine
Fuel consumption
0.8 U.S. gal./hr
(3 l/hr)
Rated voltage
24 volts
Electric power consumption 120 watts
DDEC IV DIAGNOSTIC CODES
R
EADING
C
ODES
To read the diagnostic codes, a Diagnostic Data
Reader should be plugged into the receptacle
located on the side panel of the L.H. control panel
or momentarily depress the STOP ENGINE
OVERRIDE switch located on the L.H. lower
control panel with the ignition
ON
, the engine
idling or engine shut off. Active codes will be
flashed on the STOP ENGINE indicator light
located on the central dashboard followed by the
inactive codes being flashed on the CHECK
ENGINE indicator light located on the central
dashboard. The cycle is repeated until the
operator depresses the STOP ENGINE
OVERRIDE switch. For example: a code "43"
consists of four flashes, followed by a short
pause, then another three flashes in quick
succession. The following table is a list of the
DDEC diagnostic codes.
8-4