Capitol Gears Inc. HY-24000 & HY-25000 Marine Transmission Service Manual

About this manual

This service manual provides detailed instructions for installing, maintaining, troubleshooting, and repairing Capitol Gears Inc.'s HY-24000 and HY-25000 marine transmissions. It covers principles of operation, installation procedures, preventative maintenance, and repair of both external and internal subassemblies. The manual includes specific notes for HY-25000 models, such as oil filter types and installation variations. It also addresses optional equipment like oil coolers and keyed output shaft kits, and provides torque specifications and endplay adjustments for internal components.

What's inside

• Introduction
• Principles of Operation
• Installation
• Preventative Maintenance
• Troubleshooting
• Repair of External Subassemblies
• Repair of Internal Subassemblies
• Parts Information
• Oil Filters
• Clutch

Specifications

Frequently asked questions

What are the reduction ratios available for the HY-24000?

The HY-24000 features three reduction ratios: 1.00 (to 1), 1.53, and 2.04.

What type of oil filter is used in HY-25000 marine gears?

HY-25000 marine gears (serial numbers 10200-0186 and higher) are supplied with a 25-micron, paper element type oil filter.

What is the correct bearing endplay for the output gear rear bearing?

The correct endplay is between zero and .002 inches.

What is the torque specification for the retainer plate screws on the pinion shaft?

The screws should be torqued evenly to 25 LB. FT, and re-torqued after cooling.