BENDIX TU-FLO 550 COMPRESSOR User Manual

SD-01-333
Bendix
®
Tu-Flo
®
550 Air Compressor
BENDIX
®
TU-FLO
®
550 AIR COMPRESSOR
(CROSS SECTION)
BENDIX
®
TU-FLO
®
550 AIR COMPRESSOR
(EXTERIOR)
AIR DISCHARGE
WATER OUTLET
PIECE NO.
TAG
GOVERNOR
MOUNTING
PAD
CRANKCASE
PISTON RINGS
PISTON
CRANKSHAFT
CONNECTING
ROD
INLET VALVE
SEAT
UNLOADER
INLET VALVE
CYLINDER
HEAD
END VIEW OF CYLINDER HEAD
DISCHARGE
VALVE SPRING
DISCHARGE
VALVE
DISCHARGE
VALVE STOP
AIR INLET
CRANKCASE
INLET
INLET VALVE
SPRING
DESCRIPTION
The function of the air compressor is to provide and
maintain air under pressure to operate devices in the air
brake and/or auxiliary air systems. The Bendix
®
Tu-Flo
®
550
compressor is a two cylinder single stage, reciprocating
compressor with a rated displacement of 13.2 cubic feet
per minute at 1250 RPM.
The compressor assembly consists of two major
subassemblies, the cylinder head and the crankcase. The
cylinder head is an iron casting which houses the inlet,
discharge, and unloader valving. (See Figure 1.) The
cylinder head contains the air inlet port and is designed
with both top and side air discharge ports. Three water
coolant ports provide a choice of coolant line connections.
Governor mounting surfaces are provided at both the front
and the rear of the cylinder head. The head is mounted
on the crankcase and is secured by six cap screws. The
Tu-Flo
®
550 compressor is designed such that the cylinder
head can be installed in one of two positions which are 180
degrees apart. The crankcase houses the cylinder bores,
pistons, crankshaft and main bearings, and provides the
fl ange or base mounting surface.
DISCHARGE
VALVE SEAT
UNLOADER
COVER
WATER
INLET

BENDIX TU-FLO 550 COMPRESSOR Specifications

General

Brand	BENDIX
Model	TU-FLO 550 COMPRESSOR
Category	Air Compressor
Language	English

Summary

Bendix® Tu-Flo® 550 Air Compressor Overview

DESCRIPTION

Explains the function and components of the Tu-Flo 550 air compressor.

Compressor Operation and System Integration

OPERATION

Details the intake, compression, and unloading cycles of the compressor.

NON-COMPRESSION OF AIR (UNLOADED)

Service Checks and Disassembly

REMOVAL AND DISASSEMBLY

Outlines general steps for removing and disassembling the compressor.

Compressor Rebuilding and Component Procedures

REPAIRS AND ASSEMBLY

Procedures for rebuilding and reassembling compressor parts.

TESTING REBUILT COMPRESSOR

Compressor Troubleshooting Introduction

COMPRESSOR TROUBLESHOOTING

Introduces the troubleshooting section and safety precautions.

Maintenance Schedule and Usage Guidelines

Table A: Maintenance Schedule

Provides a detailed schedule for compressor and air dryer maintenance.

Air Brake System Troubleshooting Guide

2.0 Oil Leaks and Presence

9.0 Slow Pressure Build-Up

Covers symptoms and solutions for slow pressure build-up in the system.

10.0 Air Charging System Fails to Build Air

Addresses issues where the air charging system fails to build pressure.

11.0 Compressor Safety Valve Activation

16.0 Compressor Air Leaks

Diagnostic Test Procedures

Test 1: Head Gasket Oil Leakage

Test 2: Air Brake System Leakage

Test 3: Discharge Temperature Measurement

Test 4: Governor Malfunction Test

Test 6: Compressor Unloader Leakage Test

Bendix® BASIC™ Air System Inspection Test

Appendix B: BASIC™ Test Kit Information

Provides instructions and information for using the BASIC™ test kit.

Cold Weather Operation and Maintenance Tips

Appendix C: Cold Weather Operation Tips

Thawing Frozen Air Lines