CARE AND MAINTENANCE
6. Add, if necessary, MOBIL SHC 634
synthetic lubricant (or Prevost P/N 18-0185)
until it reaches "FULL" mark;
7. Reinsert the dipstick;
8. Place engine control box to
NORMAL
position. Close engine compartment door;
9. Set battery master switch to
ON
position.
W
HEEL
B
EARING
O
IL
L
EVEL
The oil level for the front and tag axle wheel
bearings must be maintained to the level marked
in the cap. The oil level indicator, which is
shown as a line, is part of the plastic lens and is
located above the words MINIMUM OIL LEVEL.
Wait at least 15 minutes before checking the oil
level after the motorcoach has been driven to
make sure the bearing oil has settled.
Differential oil is used to lubricate the drive axle
wheel bearings. Maintain the drive axle wheel
bearing oil at the level indicated to ensure
adequate lubrication.
WHEEL BEARING
Caution :
The wheel bearing oil fill cap has
a small vent hole in the center to prevent
overpressure in the bearing housing. Clean
occasionally by inserting a needle.
OTHER VERIFICATIONS
C
OOLANT
L
EVEL
C
HECK
Coolant level is correct when coolant is visible
through the surge tank sight glass when cold. If
coolant level is low, fill system with the same 50-
50 mixture normally used.
ENGINE COMPARTMENT
Warning :
Hot engine coolant is under high
pressure. Allow engine to cool down before
adding coolant.
A
IR
T
ANK PURGE
The motorcoach may be equipped with up to
twelve air tanks. Purge accessory and wet air
tanks before each trip. The primary and
secondary air tanks must be purged at every oil
change. Oil changes should be scheduled at
least every 12,500 miles (20 000 km).
The accessory air tank drain cock is accessible
from the front service compartment. The wet air
tank drain cock is accessible from the engine
compartment R.H. side door. All air tanks are
equipped with a drain cock underneath the tank.
Refer to the "Lubrication and Service Check
Point Chart" in the "Maintenance Manual" for
tank locations.
Drain tanks by turning cocks counterclockwise.
7-6