MIRROR GP-REAR VIEW 3534248 - Caterpillar

Illustration 1 g01594915
The 279-4712 Pump Control Valve Gp can leak on certain mini hydraulic excavators. The leak is due to an error in the machining process. The leak can occur at the location of the seal (1) .Replace the pump control valve if the pump control valve leaks at the location of the seal. Use the procedure that is described in Special Instruction, REHS4587, "Procedure for Installing Pump Control Valve on Certain Mini Hydraulic Excavators".
Table 1
Affected Machines    
Affected Model     Affected Serial Numbers    
303C CR     S/N:BXT3651-3761,3763-3802,3804-3828,3833-3867,3870-3874,3880-3894,3896-3899    
303.5C CR     S/N:DMY2393,2634-2679,2681-2689,2691-2692,2694-2727,2729-2750,2752-2779,2781-2792,2796    
304C CR     S/N:FPK2325,5190-5234,5236-5413,5415-5430,5432-5438,5444,5446-5449,5451-5453    
305C CR     S/N:HWJ3111-3148,3150-3173,3175-3232,3234-3246,3248,3250-3264,3266-3290,3292-3301,3304-3308