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Changingthe coolant pump

MODIFICATION INSTRUCTION
Bulletin Nbr: 262-1647
Date: ........... OKTOBER 1995
Market: SG, TH
Changing the coolant pump


Service directive No. 10427

Cars in stock must be remedied before delivery. Cars already delivered must be rectified in connection with a scheduled visit to the garage for service or repairs.

Cars concerned

All Saab 900 models with a 4-cylinder engine and A C or ACC having the following chassis numbers:

R2000001-T2002623 (3-/5-d)

S7000001-T7000462 (cabriolet).

Background

On account of unequal forces within the poly-Vbelt circuit it is possible that the water pump pulley shears at its centre axle shaft, causing the poly-Vbelt to become adrift. Upon this happening the function of the alternator, steering servo pump, A/C compressor and the water pump will be lost. The problem is solved with a new design of pump (fig. B) having the pulley bolted to the pump axle and not welded as in fig. A.

Materials

88 22 652 Coolant pump 1 pc (incl. 0-ringstand rear pipe)

Procedure

Inspect the water pump pulley. If the pump is of type "A" as shown, continue as follows:

Change the water pump according to Service Manual 2:4 "Exhaust system, cooling system, turbo system" pages .

Standard time information

See separate information.