Hummer H1 Service Manual page 752

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Figure 11-43: Seal Remover
4. Using O-ring remover, remove and discard seal seat O-
ring from the compressor neck (Figure 11-44).
Figure 11-44: O-Ring
5. Recheck shaft and inside of the compressor neck for dirt
or foreign material and be sure these areas are clean before
installing new parts.
Cleaning
Thoroughly clean seal seat O-ring groove in front head.
Installation
CAUTION: Seals should not be reused. Always use a new
specification service seal. Be sure that the replacement seal is
not scratched or damaged. Make sure that the seal seat and
seal are free of lint and dirt.
1. Dip new seal seat O-ring in clean PAG oil and install onto
O-ring installer (Figure 11-45).
Figure 11-45: O-Ring Installer
2. Insert O-ring installer into the compressor neck until
installer bottoms. Lower the moveable slide of the O-ring
installer to release the O-ring into the seal seat O-ring
lower groove. (The compressor neck top groove is for the
05745159
Heating/Ventilation/Air Conditioning (HVAC)
SEAL REMOVER/
INSTALLER
SEAL
COMPRESSOR
O-RING
REMOVER
O-RING
SHAFT
S11-035
O-RING
O-RING
INSTALLER
shaft seal retainer ring.) Rotate the installer to seat the O-
ring and remove the installer.
3. Dip new seal in clean PAG oil and assemble seal onto seal
installer by turning handle clockwise. The stamped steel
case side of the lip seal must be engaged with knurled
tangs of installer so that the flared-out side of lip seal is
facing and installed towards the compressor. Install seal
protector in the seal lip and place over the compressor
shaft, and push the seal in place with a rotary motion, or
place the seal protector over end of compressor shaft, and
slide the new seal onto the shaft with a rotary motion until
it stops. Take care not to dislodge the O-ring. Be sure the
seal makes good contact with the O-ring. Disengage the
installer from the seal and remove the installer and the seal
protector (Figure 11-46).
COMPRESSOR
SHAFT
Figure 11-46: Seal Installer
CAUTION: Handling and care of seal protector is important.
If seal protector is nicked or the bottom flared, the new seal
may be damaged during installation.
4. Using snapring pliers, install new seal retaining ring with
its flat side against the seal (Figure 11-47).
RETAINING RING
Figure 11-47: Seal Retaining Ring
5. Remove any excess oil from the shaft and inside the
compressor neck.
6. Install the clutch plate and hub assembly.
11-33
SEAL PROTECTOR
SEAL INSTALLER
SEAL