Hummer H1 Service Manual page 738

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Discharge Hose Replacement
Removal
1. Disconnect discharge hose from condenser. Remove and
discard O-ring (Figure 11-12).
2. Remove driver side engine splash shield (Section 10).
CONDENSER
DISCHARGE HOSE
Figure 11-12: Discharge Hose Location
3. Remove tie strap securing discharge hose to oil cooler
lines. Discard tie strap.
4. Remove discharge hose from compressor block and
discard O-ring (Figure 11-10).
Installation
CAUTION: To avoid potential thread or fitting damage, hand
start connections before using wrenches.
1. Position O-ring on discharge hose (Figure 11-10).
2. Secure discharge hose to compressor block. Torque fitting
to 15-20 lb-ft (20-27 N•m).
3. Lubricate O-ring, position on discharge hose, and connect
hose to condenser. Using two wrenches for equalized
support, tighten to 15-20 lb-ft (20-27 N•m).
4. Secure discharge hose to oil cooler lines with tie strap.
5. Install driver side engine splash shield.
6. Evacuate and charge air conditioning system.
7. Check for system leaks.
8. Check A/C operation.
05745159
Heating/Ventilation/Air Conditioning (HVAC)
O-RING
OIL
COOLER
LINES
TIE STRAP
Condenser-to-Receiver/Dryer Hose
WARNING: Air conditioning system components are
subject to high pressure R-134a gas. Always discharge
pressure and contain refrigerant using approved service
equipment. Use extreme care when handling R-134a.
Direct contact with skin may cause frostbite. Do not
smoke in areas where R-134a is stored or used. Failure
to follow these warnings may result in serious injury.
Removal
CAUTION: To avoid potential thread or fitting damage, hand
start connections before using wrenches.
1. Discharge air conditioning system.
2. Disconnect hose from condenser and remove O-ring.
Discard O-ring (Figure 11-13).
3. Remove hose and O-ring from receiver/dryer. Discard O-
ring.
TO EVAPORATOR
HOSE
RECEIVER
DRYER
Figure 11-13: Receiver/Dryer Location
Installation
1. Lubricate O-ring with PAG oil, position on hose, and
secure hose to condenser. Using two wrenches for equal-
ized support, tighten to 11-13 lb-ft (15-18 N•m).
2. Lubricate O-ring with PAG oil, position on hose, and
secure hose to receiver/dryer. Using two wrenches for
equalized support, tighten to 11-13 lb-ft (15-18 N•m).
3. Evacuate and charge air conditioning system.
4. Check system for leaks.
5. Check air conditioning system operation.
11-19
CONDENSER