Shaft Seal Replacement: Overview

SHAFT SEAL ON SANDEN COMPRESSOR 709, 508/510, REPLACEMENT
(Diesel, B28F, B280F, B63O4F engines)

If the shaft seal on the compressor leaks, or if the ECO unit is retrofitted from R12 to R134a, the shaft seal must be replaced with a seal suitable for use with R134a

Because no leakage is permitted, according to Volvo's environmental demands, a special tool kit has been developed which enables the rapid replacement of the shaft seal without causing damage to sensitive components or sealing surfaces

SHAFT SEAL. SANDEN COMPRESSOR




Note!
Shaft seal must always be replaced on both new and used compressor units The seal must be replaced because the original seal in the compressor units was not intended for use with R134a

TOOL KIT FOR SHAFT SEAL REPLACEMENT




Use Volvo special tool 999 5602 or equivalent (Robinair 18095).

MATERIAL




Shaft seal kit for Sanden 508/510 compressors adapted for use with refrigerant R134a. P/N 9134344-2.

P/N on compressor oil for lubrication of 0 rings and sealing surfaces (ester oil) 1161442-7 (200 ml 6.76 fl. oz).

Note!
The 0 rings on the compressor's in- and outlet must always be replaced,

P/N: 35375070 and 3537503-9. These 0 rings are not part of the kit and must be ordered separately.




Shaft seal kit for Sanden 709 compressors adapted for use with refrigerant R134a. P/N 9134345-9

P/N on compressor oil for lubrication of 0 rings and sealing surfaces (ester oil) 1161442J (200 ml 6.76 fl. oz).

Note!
The 0 rings on the compressor's in- and outlet must always be replaced.

P/N: 35375070 and 3537503-9. These 0 rings are not part of the kit and must be ordered separately.

C1
Empty system of refrigerant (if not done earlier). Remove compressor from the car

Refer to Service Manual Section 8 (82 88) Body Fittings, Interior, Climate Units 740, 760 ^ 1982-19.. pages 243, 246 and 289.

Note!
Before starting work drain oil from both new and used compressor units.

C2



If the compressor must be replaced with a new factory unit, carry out a pressure equalization as described below.

The compressor is filled with a protective gas (nitrogen) during the manufacturing process. The gas is under pressure in the compressor, so a pressure equalization is necessary before the seals can be removed. Equalize pressure by opening one of the valves (A) or pipe connections (B) and tighten them again afterward. If (B) was opened check that the gaskets (black and white) are in place.

Note!
The protective used is not harmful.