Cessna 170 — Maintenance Manual

This document is a service letter from Textron Aviation regarding the hydraulic pump replacement for Cessna 170 aircraft equipped with 2100A floats. It provides detailed instructions for compliance, including parts required, approximate shop hours, and warranty information. The service letter is intended for maintenance personnel and aircraft technicians who are responsible for the upkeep of Cessna 170 models. It outlines the necessary steps to replace the hydraulic pump, ensuring that the aircraft remains compliant with safety and operational standards.

• The document is a service letter for Cessna 170A and 170B models.
• It details the replacement of the hydraulic pump on 2100A floats.
• Approximate labor time for the replacement is 8 hours.
• The service kit includes part number 1011887, a new hydraulic pump.
• Weight and balance changes must be documented after the replacement.