6--8
T-334
j. The replacement compressor is shipped with an oil
charge of 591ml (20 ounces). Before sliding the new
compressor in the unit, remove the cap from the oil
drain port and install the Schrader valve and cap as-
sembly (kit item #10) into the port, and torque to 2.7 to
3.0 mkg (20 to 22 ft-lbs.), then, using a small funnel,
charge the compressor with an additional 1893 ml
(64 ounces) Mobil (POE oil) through the suction port.
NOTE
Schrader valve should be installed on the new
compressor ONLY if the old (removed) com-
pressor was equipped with a Schrader valve.
k. Remove the adhesive backing from the Mylar protec-
tor (kit item # 15), and apply it to the upper mounting
bracket of the compressor (refer to Figure 6--7 for
correct location).
1
2
3
1
4
5
4
1. SST Washer
(kit item #10)
2. Resilient Mount
(kit item #7)
3. Mylar Washer
(kit item #3)
4. Mylar Protector
(Retain)
5. Base Plate (Retain)
Figure 6--7 Compressor Lower Mounting
l. Wire tie the compressor base plate with the wire ties
(kit item #5) to the compressor, and slide the com-
pressor into the unit.
m.Cut and remove the wire ties that were used to hold
the base plate and protectors to the compressor.
n. Replace the resilient mounts (kit item #7).
o.Place the new SST washers (kit item #9) on either
side of the resilient mounts and place the new Mylar
washers (kit item #4) on the bottom as shown in
Figure 6--6. Install the four base mounting screws
loosely.
p. Place the new Teflon seals (kit items #2 and 3) at the
compressor service ports and connect the four ser-
vice fittings loosely.
q. Torque the four base mounting screws to 6.2 mkg
(45 ft-lbs).
r. Torque the four compressor fittings to:
Service Valve
Torque
Suction or Discharge
11 to 13.8 mkg
(80 to 100 ft-lbs.)
Economizer
6.9 to 8.3 mkg
(50 to 60 ft-lbs.)
s. Reassemble the top mounting bracket (see
Figure 6--6) by hand tightening the 32 mm (1
¼
inch)
bolt and torquing the four mounting screws to
0.9 mkg (6.5 ft-lbs). Align the mounting so that the
ring and bushing assembly are free with no compres-
sion.
t. Torque the 32mm bolt to 1.5 mkg (11 ft-lbs.).
u. Evacuate the complete system and charge with
R-134a refrigerant (refer to section for proper proce-
dures.
v. Remove and discard the compressor terminal pins
protecting cover from the replacement compressor.
w. Place new rubber gasket (kit item #8) around the
electrical pins on the compressor shell as shown in
the picture. Clean the area if necessary.
NOTE
Do not bump, push or touch the terminal pins.
x. Carefully guide the cable and terminal box assembly
over the two mounting pins (studs) on the compres-
sor shell and over the terminal pins.
y. Using both hands, push the terminal box from top and
bottom simultaneously until the box is seated firmly
against the rubber gasket.
z. Tighten the two screws (kit item #17) until a firm re-
sistance is felt.
aa.Torque the two screws to 7 +/- 0.5 ft-lb (1mkg).
ab.Backseat all service valves (if applicable), connect
the power to the unit and run it for at least 20 minutes,
then check the oil and refrigerant levels. Adjust the
fluid levels as necessary (refer to section for proper
procedure).
ac. Perform a leak check of the system.
ad. Reinstall the compressor guard.
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