Eaton Charge Pump-1.7 Clockwise Ap

Eaton Charge Pump-1.7 Clockwise Ap

This is a genuine Eaton replacement A-Pad charge pump kit, part number 990356-022. It is designed to bolt onto larger Eaton hydrostatic main pumps, commonly found in the hydraulic systems of concrete mixer trucks. Its primary function is to supply cooled, filtered oil at a constant pressure to the main pump's control circuit and to replenish internal system oil, ensuring smooth operation and preventing damage. This specific model has a displacement of 1.7 cu in/rev (28cc), a clockwise (CW) rotation, and an internal charge pressure relief valve set to 220 PSI. Replacement is necessary when the original charge pump fails to maintain adequate pressure, leading to sluggish hydraulic performance or system overheating.

Key Features

• Genuine Eaton A-Pad charge pump kit
• Displacement of 1.7 cubic inches / 28cc
• Clockwise (CW) rotation
• SAE A-Pad mounting configuration
• Integrated pressure relief valve factory-set at 220 PSI

Fits These Mixers

McNeilus, Terex, Con-Tech. This charge pump is designed for use with Eaton heavy-duty variable displacement pumps, such as the 54 series, which are widely used in the hydraulic systems of front and rear discharge concrete mixers from manufacturers including McNeilus, Terex, and Con-Tech.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.