Emergency Starting; Boost Posts - MCi J4500 Operator's Manual

EMERGENCY STARTING

Follow procedures exactly or personal injury
or property damage may result, and the
starting or charging system of the booster or
immobilized vehicle may be damaged.
Do not jump start a vehicle with a frozen
battery. Frozen batteries can rupture or
explode. Examine the fill vents for ice. If ice is
visible, do not jump start.
Connect and disconnect jumper cables as
described.
If the coach has dead batteries, it can be jump
started.
Negative and positive boosting posts are in the
curb-side rear service compartment.
Connecting Booster Cables ( Figure 62 )
1. Set the parking brake, turn off lights, heater and
all electrical accessories.
To reduce the chance of an explosion, take
steps to prevent hydrogen buildup. Remove
the vent caps from the booster and the dead
batteries. Ensure the battery compartment is
well ventilated.
Do not permit vehicles to touch each other.
Take care that clamps from one cable do not
touch clamps on the other cable.
2. Remove the vent caps from the booster and the
discharged batteries.
3. Remove the rubber boot that covers the positive
booster post located on the upper frame rail
below the lavatory tank.
4. Attach one end of one jumper cable to the
positive terminal of the booster battery.
June 2016
5. Attach the other end of the same cable to the
positive booster post on the upper frame rail
below the lavatory tank.
1
2
Figure 62. Boost Posts
1. Positive Boost Post
2. Negative Boost Post
6. Attach one end of the remaining negative cable
to the negative terminal of the booster battery.
7. Attach the other end to the negative booster
post on the lower coach frame rail.
Disconnecting Booster Cables ( Figure 62 )
Do not lean over the booster battery when
disconnecting the ground lead. Take care that
clamps from one cable do not touch clamps
on the other cable.
1. Disconnect the jumper cable from the ground
stud.
2. Remove the remaining end of the negative
jumper cable from the booster battery.
3. Remove one end of the remaining jumper cable
from the positive booster post on the upper
frame rail.
4. Remove the other end of the same cable from
the positive terminal of the booster battery.
5. Install the rubber boot over the positive booster
post.
6. Install the vent caps on the batteries.
49