C - Peterbilt Motors Company

5
Maintenance Procedures
Removal and Installation—Poly
V-belt, Alternator and
Air-Conditioning Compressor
Drive
Removal
1. Remove the poly V-belt from the
fan and coolant pump drive as
described in “Poly V-belt, Coolant
Pump Drive and Fan Drive”
“Removal”.
2. Next, place a flex-bar with a
15 mm socket on the alternator
and air conditioning compressor
drive belt tensioner roller fastener
as shown. Move the bar in the
direction shown to relieve pressure
on the belt tensioner.
3. With the belt tensioner pressure
relieved, remove the poly V-belt
from the pulleys.
5-32
NOTE: The tensioner can
be temporarily blocked
with a 0.16-0.2 inch (4-5
mm) thick pin (bore). This
facilitates removal and
installation of the poly
V-belt.
4. After removing the belt, carefully
allow the belt tensioner to spring
back to the stop (if it had not been
temporarily blocked).
5. Inspect the pulleys for damage,
rust and grease deposits. Clean
or replace as necessary.
Installation
1. Place the new poly V-belt over the
pulleys, positioning the new belt
so that it falls into all the belt pulley
grooves.
2. After installing the belt, carefully
allow the belt tensioner to spring
back to its normal position. If the
tensioner had been temporarily
blocked, relieve tensioner
pressure enough to remove
the locking pin, then allow the
tensioner to spring back to its
normal position.
3. Reinstall the coolant pump and
fan drive poly V-belt as previously
described in “Poly V-belt, Coolant
Pump Drive and Fan Drive”
“Installation”.
4. Reconnect the electrical ground
wire to the battery.
Cleaning the Engine
When cleaning the engine, follow
the instructions from the vehicle
manufacturer Operator’s Manual and
observe all environmental protection
regulations.