Hypro 3430-0748 Hydraulic Motor Seal Repair Kit for HM1C / HM2C / HM4C / HM5C Pumps

Hypro 3430-0748 hydraulic motor seal repair kit for older-style Hypro HM1C, HM2C, HM3C, HM4C and HM5C motors on 9303, 9306 and 9305 series hydraulic-driven pumps. If oil is seeping between the pump and the hydraulic motor, or the motor is weeping at the port adapters, this kit reseals the motor without replacing it.

Which motor kit do I need? Older motors have a separate front seal cartridge (motor body 0150-2500C, complete motors 2500-0081C to 2500-0085C) and take this kit. Pumps built about 2018 on have the new-style motor (motor body 0150-2540C, no cartridge) and take 3430-0881. Not sure? Send us a photo of the motor end and the nameplate and we'll confirm before you order.

This is the hydraulic-side kit. For the wet-end seal (fluid leaking at the pump casing) you want 3430-0332 (9303C/9306C), 3430-0445 (9303P) or 3430-0589 (9303S/9306S). Many people order both and do the whole pump at once.

Kit contents

• Ball bearing (ref. 13)
• Motor shaft lip seal (ref. 16)
• Thread seal gasket (ref. 35) and washer (ref. 36)
• Cartridge O-rings, 2 (ref. 15)
• Motor housing O-rings, 2 (ref. 22)
• Port adapter O-rings (ref. 30, 32)

Fits

• Older-style Hypro HM1C, HM2C, HM3C, HM4C, HM5C hydraulic motors
• Hypro 9303C / 9303P / 9303S, 9306C / 9306S and 9305 series hydraulic-driven pumps with those motors

Related parts

• Complete HM4C hydraulic motor: Hypro 2500-0084C · HM5C: Hypro 2500-0085C

Details

Contents per Hypro parts breakdowns L-1546 and L-1547.