Refrigerant System Service; Refrigerant System Service Connections; Figure 8−16 Water Pump V-Belt; Figure 8−17 Engine Crankcase Breather - Carrier VECTOR 6500 Operation & Service Manual

8.5.13 Water Pump V-Belt
WARNING
Beware of moving poly V-belt and belt driv-
en components.
WARNING
When working with belts, beware of pinch
points.
Figure 8−16 Water Pump V-Belt
The water pump v-belt is driven by a sheave on the
engine crankshaft. Frayed, cracked or worn belts must
be replaced. This belt is a one time use only type and
requires no tension adjustment.
To replace the poly V-belt, perform the following steps:
a. Ensure the unit will not start automatically by dis-
abling any two way communication and placing the
Main Power switch in the OFF position. Disconnect
the high voltage source and lockout/tagout the re-
ceptacle.
b. Using the proper size socket, slowly rotate the crank
by turning the crank pulley nut. At the same time, use
a flat, blunt object to guide the belt off the crank
pulley. Be careful not to damage grooves on the
pulley.
c.. Replace the poly V-Belt by positioning the belt on the
water pump pulley, and while rotating the engine (as
62-11389
Water Pump Belt
8−14
in step 1), use a flat, blunt object to guide the belt
onto the crank pulley. Be careful not to damage
grooves on the pulley or belt.
8.5.14 Crankcase Breather
The engine uses a closed type breather with the
breather line attached to the cylinder head cover. (See
Figure 8−17)
The breather assembly should be cleaned once a year
or at every 2000 hours maintenance interval (whichever
comes first). See Table 8−1
3
4
1. Screw
2. Breather Cover
3. Breather Valve
4. Breather Tube
Figure 8−17 Engine Crankcase Breather

8.6 REFRIGERANT SYSTEM SERVICE

Service of the refrigerant system includes: connection
of refrigerant system equipment, servicing the
refrigerant charge, leak checking and evacuation.
Procedures for refrigerant system service are provided
in the following sub paragraphs.

8.6.1 Refrigerant System Service Connections

To service the refrigerant system, service equipment is
connected to the system at the compressor discharge
service valve, compressor suction service valve and/or
the liquid line service valve.
When connecting to a valve, backseat the valve (turn
counterclockwise) to close off gauge connection and
attach service line to the valve. Open valve 1/4 to 1/2 turn
(clockwise) and then purge the service line. See
Figure 8−18 for an example of a full service connection
setup.
NOTE
To avoid damage to the earth's ozone layer, use a
refrigerant recovery system whenever removing
refrigerant from a refrigeration system. When
working with refrigerants you must comply with all
local government environmental laws, U.S.A.
EPA section 608.
2 1